CN110159596B - Circumferential and axial adjustable cylinder with angle adjustable bionic guide vanes - Google Patents
Circumferential and axial adjustable cylinder with angle adjustable bionic guide vanes Download PDFInfo
- Publication number
- CN110159596B CN110159596B CN201910339203.6A CN201910339203A CN110159596B CN 110159596 B CN110159596 B CN 110159596B CN 201910339203 A CN201910339203 A CN 201910339203A CN 110159596 B CN110159596 B CN 110159596B
- Authority
- CN
- China
- Prior art keywords
- spline
- bionic
- sleeve
- axial
- circumferential
- 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
- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 65
- 239000000411 inducer Substances 0.000 claims abstract description 24
- 241000283153 Cetacea Species 0.000 claims abstract description 8
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000004323 axial length Effects 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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
- 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
- F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
- F04D29/466—Fluid-guiding means, e.g. diffusers adjustable especially adapted for liquid 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
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a circumferential and axial adjustable cylinder with an angle adjustable bionic guide vane. A scale wheel disc and an axial adjusting wheel disc are fixedly sleeved at one end of the spline cylinder main body, the other end of the spline cylinder main body is sleeved in an upstream pipeline of the inducer, a plurality of bionic guide vanes are circumferentially arranged on the inner wall surface of the spline cylinder, each bionic guide vane is a bionic seat head whale fin structure, and a corresponding number of ratchet pawl structures are arranged on the outer wall surface of the spline cylinder at positions corresponding to the bionic guide vanes; the other end outer wall surface of the spline cylinder is of a spline structure with different key tooth lengths, and the key teeth are matched with the key tooth grooves of the spline cylinder sleeve and used for adjusting the circumferential and axial positions. The invention can change the inlet inflow form of the centrifugal pump and reduce the backflow of the inducer inlet.
Description
Technical Field
The invention relates to a centrifugal pump inlet guide vane structure, in particular to a circumferential and axial adjustable cylinder with an angle adjustable bionic guide vane.
Background
The centrifugal pump is easy to generate cavitation, the inducer is additionally arranged to obviously reduce cavitation, but backflow is easy to generate near the inlet of the inducer, the outer edge of the impeller and the position close to the hub generate pressure difference under the action of centrifugal force due to the inducer, and the pressure difference is always kept due to the constant rotation of the inducer blades, so that the liquid at the outer edge position of the inducer inlet is returned to the main flow. When the return flow returns to the main flow, the flow state of the main flow is affected by the return flow rotation, so that the main flow also rotates, and the pre-rotation is generated. Especially under the working condition of small flow, the inlet backflow of the inducer can have great influence on the main flow, so that the improvement of the inlet backflow problem of the inducer becomes an important problem for researching the influence on the performance of the centrifugal pump.
Disclosure of Invention
In order to solve the problem of backflow of an inducer inlet, the invention provides a circumferential and axial adjustable cylinder with an angle adjustable bionic guide vane.
The technical scheme of the invention is as follows:
the invention discloses a barrel body which is arranged in an upstream pipeline of a centrifugal pump and is coaxially arranged with the centrifugal pump or an inducer, and mainly comprises a spline barrel body, a bionic guide vane, an axial adjusting wheel disc, a ratchet wheel, a main pawl sleeve, a secondary pawl sleeve and a spline barrel sleeve, wherein the spline barrel body is axially divided into a front section and a rear section, the axial adjusting wheel disc is sleeved on the periphery of the front section, a gap is reserved between the inner wall surface of the axial adjusting wheel disc and the outer wall surface of the front section and is used for installing the main pawl sleeve, the secondary pawl sleeve and the ratchet wheel, the main pawl sleeve is movably sleeved at the front end of the front section so that the main pawl sleeve circumferentially rotates and axially does not move, the secondary pawl sleeve is fixedly sleeved at the tail end of the front section, the main pawl sleeve and the secondary pawl sleeve are in non-contact connection and are provided with annular gaps, a plurality of key slot clamping holes are circumferentially formed in the annular gaps, each key slot clamping hole radially penetrates through the inner wall surface of the spline barrel body, a plurality of connecting shafts are respectively correspondingly arranged in the respective key slot clamping holes, the connecting structures of each connecting shaft are identical, one end of the spline barrel body, which extends out of the spline sleeve is fixedly sleeved with the ratchet wheel, the main pawl sleeve, the pawl sleeve and the secondary pawl sleeve is fixedly sleeved at one end of the pawl sleeve, which is in the position close to the ratchet wheel and is respectively meshed with the bionic guide vane, and is respectively, and meshed with the bionic guide vane.
The rear section is provided with the spline along the circumference of outer peripheral face, and every key tooth of spline all sets up along the axis direction, and two adjacent key teeth axial length are different, and the outer peripheral face cover of rear section is equipped with the spline section of thick bamboo sleeve, spline section of thick bamboo telescopic inner peripheral face be equipped with be used for with spline cooperation use key tooth groove, the terminal of spline section of thick bamboo telescopic is through threaded connection in centrifugal pump's upstream pipeline.
Preferably, the bionic guide vane extends inwards along the radial direction of the spline cylinder main body to form a three-dimensional guide vane structure, the cross section of the three-dimensional guide vane structure is in an axisymmetric raindrop shape, the two ends of the raindrop shape are respectively used as the head end and the tail end of the bionic guide vane, and the head end is close to the front end inlet of the spline cylinder main body and is provided with a wave-shaped structure of a whale fin of a bionic seat head.
Preferably, the front end of the main pawl sleeve is radially provided with an outwards extending circumferential flange, the surface of the circumferential flange is provided with a dial, and the circumference of the dial body is provided with uniformly distributed angle scales for displaying the circumferential adjustment angle of the bionic guide vane.
Preferably, the spline is a rectangular spline, the rectangular spline comprises long key teeth and short key teeth which are alternately distributed along the circumferential direction, the lengths of key tooth grooves of the spline groove sleeve are also alternately distributed according to the length, and the circumferential and axial positions of the bionic blades relative to the centrifugal pump are adjusted through the length matching of the key teeth and the key teeth.
Preferably, the outer circumferential surface of the axial adjustment wheel disc is provided with a circumferential flange extending outwards along the radial direction, and the circumferential flange facilitates axial adjustment of the cylinder body.
The beneficial effects of the invention are as follows:
according to the invention, the bionic guide vane capable of changing the pre-rotation angle of the vane and adjusting the circumferential direction and the axial direction is additionally arranged in front of the centrifugal pump or the inducer, the shape of the bionic guide vane is bionic with the whale fin of the seat head to change the inflow form, and the backflow of the inlet of the centrifugal pump or the inducer is reduced.
Drawings
FIG. 1 is a schematic view of a semi-sectional structure of the present invention;
FIG. 2 is a schematic structural view of a spline cylinder body;
FIG. 3 is a schematic illustration of a spline cylinder body and spline cylinder sleeve mating connection relationship;
FIG. 4 is a schematic view of a ratchet and pawl mechanism of the present invention;
fig. 5 is a schematic view of a bionic guide vane according to the present invention.
In the figure, a spline cylinder main body, a bionic guide vane, a dial, an axial adjusting wheel disk, a connecting shaft, a ratchet wheel, a main pawl sleeve, a slave pawl sleeve, a key slot clamping hole, a spline cylinder sleeve and a pawl are respectively arranged in sequence, wherein the spline cylinder main body, the bionic guide vane, the dial, the axial adjusting wheel disk and the connecting shaft are respectively arranged in sequence, the spline cylinder main body, the bionic guide vane, the dial, the axial adjusting wheel disk and the connecting shaft are respectively arranged in sequence, the axial adjusting wheel disk are respectively arranged in sequence, the spline cylinder main pawl sleeve and the slave pawl sleeve are respectively arranged in sequence, the key slot clamping hole and the spline cylinder sleeve are respectively arranged in sequence, and the spline cylinder sleeve is respectively arranged in sequence.
Detailed Description
The invention will be further described with reference to the accompanying drawings and examples.
As shown in figure 1, the spline cylinder is arranged in an upstream pipeline of a centrifugal pump and is coaxially arranged with an inducer or an impeller of the centrifugal pump, the spline cylinder main body 1 is divided into a front section and a rear section along the axial direction, the section close to an inflow port is a front section, the section close to the inducer is a rear section, and the front section and the rear section are integrally manufactured.
As shown in fig. 2, the periphery of the front section is sleeved with an axial adjusting wheel disc 4, and the peripheral surface of the axial adjusting wheel disc 4 is provided with a circumferential flange extending outwards along the radial direction, so that the circumferential flange is convenient for axial adjustment of the cylinder body. A gap is formed between the inner wall surface of the axial adjusting wheel disc 4 and the outer wall surface of the front section and is used for installing a main pawl sleeve 7, a secondary pawl sleeve 8 and a ratchet wheel 6, the main pawl sleeve 7 is movably sleeved at the front end of the front section, so that the main pawl sleeve 7 rotates circumferentially and does not move axially, and the secondary pawl sleeve 8 is fixedly sleeved at the tail end of the front section, namely, the secondary pawl sleeve 8 is not movable circumferentially and axially. The main pawl sleeve 7 and the auxiliary pawl sleeve 8 are in non-contact connection and are provided with annular gaps, a plurality of key groove clamping holes 9 are formed in the annular gaps along the circumferential direction, each key groove clamping hole 9 penetrates through the inner wall surface of the spline cylinder main body 1 in the radial direction, a plurality of connecting shafts 5 are respectively correspondingly arranged in the respective key groove clamping holes 9, and one bionic guide vane 2 and one ratchet 6 are respectively connected to the inner wall surface and the outer wall surface of the spline cylinder main body 1 through the common connecting shaft 5. In the implementation, the ratchet 6 is connected with the bionic guide vane 2 in a key shaft mode, and the specific angle change of the guide vane can be adjusted according to the scale wheel disc 3.
The front end of the main pawl sleeve 7 is provided with a circumferential flange extending outwards along the radial direction, so that the main pawl sleeve 7 forms a T-shaped sleeve, the surface of the circumferential flange is provided with a dial 3, and the circumference of the dial 3 body is provided with uniformly distributed angle scales for displaying the pre-rotation adjusting angle of the bionic guide vane 2.
As shown in fig. 4, the connection structure of each connection shaft 5 is the same, and an arbitrary connection shaft 5 is described as an example. The ratchet wheel 6 is fixedly sleeved at one end of the connecting shaft 5 extending out of the spline cylinder main body 1, a main pawl sleeve 7 and a secondary pawl sleeve 8 are respectively provided with a main pawl and a secondary pawl which are used for being meshed with the ratchet wheel 6 at positions close to the ratchet wheel 6, the number of the main pawl and the secondary pawl is the same as that of the bionic guide vanes 2, the main pawl sleeve 7 and the secondary pawl sleeve 8 are respectively meshed with one common ratchet wheel 6 through respective pawls 11 to form a ratchet pawl mechanism, the bionic guide vanes 2 are fixedly connected at one end of the connecting key extending into the spline cylinder main body 1, and each bionic guide vane 2 is of a bionic seat head whale fin structure; the pawl 11 can be rotated by a certain angle for adjusting the circumferential rotation of the ratchet wheel 6.
As shown in fig. 2 and 3, a spline is provided on the rear section of the spline cylinder body 1 along the circumferential direction of the outer circumferential surface, each spline tooth of the spline is provided along the axial direction, the axial lengths of two adjacent spline teeth are different, the outer circumferential surface of the rear section is sleeved with a spline cylinder sleeve 10, the inner circumferential surface of the spline cylinder sleeve 10 is provided with a spline groove for matching with the spline, and the tail end (the end close to the inducer) of the spline cylinder sleeve 10 is connected in an upstream pipeline of the inducer through threads. The external diameter of the spline cylinder sleeve 10 is the same as the external diameter of the axial adjustment wheel disc 4. The screw thread is provided at the end of the inner wall surface of the spline shaft sleeve 10.
As shown in fig. 1 and 5, the bionic guide vane 2 extends inwards along the radial direction of the spline cylinder main body 1 to form a three-dimensional guide vane structure, the cross section of the three-dimensional guide vane structure is in an axisymmetric raindrop shape, the two ends of the raindrop shape are respectively used as the head end and the tail end of the bionic guide vane 2, the head end is close to the front end inlet of the spline cylinder main body 1, and the head end is provided with a wave-shaped structure of a whale fin of a bionic seat head. The included angle between the symmetry axis of the raindrop shape and the axis of the spline cylinder main body 1 is the pre-rotation angle of the bionic guide vane 2, and the pre-rotation angle of the bionic guide vane 2 is changed through the rotation adjustment of the main pawl sleeve 7.
The bionic guide vane 2 is of a bionic structure, the end face of the head end of the bionic guide vane 2 is an inflow face of the bionic guide vane 2, the inflow face of the bionic guide vane 2 is designed in a sinusoidal manner by imitating a whale fin of a seat head, and inflow flow forms are changed.
In the concrete implementation, six bionic guide vanes 2 are arranged, and the six bionic guide vanes 2 are uniformly distributed on the periphery of the inner wall of the spline cylinder main body 1. Each bionic guide vane 2 is assembled on the inner wall of the spline cylinder body 1 through a shaft at a pre-rotation angle of 10 degrees.
As shown in fig. 2, the spline is a rectangular spline, the rectangular spline comprises long key teeth and short key teeth which are alternately distributed along the circumferential direction, the lengths of the key grooves of the spline groove sleeve 10 are also alternately distributed according to the length, and the circumferential and axial positions of the bionic blade 2 relative to the inducer are adjusted through the length matching of the key teeth and the key teeth.
The specific working process of the invention is as follows:
firstly, the whole cylinder body is installed in an upstream pipeline of the inducer through the spline cylinder sleeve 10, and the incoming flow flows into the inducer through the bionic guide vane 2 in the spline cylinder body 1.
Then, the circumferential angle installation position of the bionic guide vane 2 is adjusted according to actual needs, so that backflow can be reduced to the greatest extent. The specific method comprises the following steps: the state that the long key teeth of the spline cylinder main body 1 are meshed with the long key tooth grooves of the spline shaft sleeve 10 is regarded as an initial installation state, the axial adjusting wheel disc 4 is pulled out axially outwards in the initial state, the spline of the spline cylinder main body 1 is disengaged from the key grooves of the spline shaft sleeve 10, then the spline cylinder main body 1 is rotated for a certain angle, the axial adjusting wheel disc 4 is pushed back until the long key teeth of the spline shaft 1 rotate to the meshing positions with the long key tooth grooves of the next stage of the spline shaft sleeve 10, the spline of the spline cylinder main body 1 is meshed with the key grooves of the spline shaft sleeve 10 again, and circumferential position adjustment of the bionic guide vane 2 is achieved. The spline shaft sleeve 10 at this time covers the spline of the spline cylinder body 1 substantially completely.
The axial installation position of the bionic guide vane 2 is adjusted according to actual needs so as to adapt to the axial distance of required installation. The specific method comprises the following steps: on the premise of adjusting the circumferential angle installation position of the bionic guide vane 2, the axial adjusting wheel disc 4 is pulled out axially, the spline cylinder main body 1 is slightly rotated by a certain angle until the long key teeth of the spline cylinder main body 1 are rotated to the engagement position with the short key tooth grooves of the spline shaft sleeve 10, and then the axial adjusting wheel disc 4 is pushed back. Since the long key teeth of the spline cylinder body 1 are turned to mesh with the short key teeth grooves of the spline cylinder sleeve 10, the spline cylinder sleeve 10 at this time can cover only half the axial length of the spline cylinder body 1, as shown in fig. 3.
The specific method for adjusting the pre-rotation angle of the bionic guide vane 2 is as follows:
the main pawl sleeve 7 is rotated, pawls on the main pawl sleeve 7 are driven to rotate to generate movement of circumferential positions, the main pawls are driven to rotate by a certain angle by circumferential movement, the secondary pawls are meshed with the next gear teeth of the ratchet 6 under the rotation action of the ratchet 6, the scale wheel disc 3 is provided with scales according to the rotated angle of the ratchet 6, the instant scale wheel disc 3 can display the adjusted blade rotation angle, and the angle adjusted by the bionic guide vane 2 can be obtained by reading the angle reading of the scale wheel disc 3, so that the pre-rotation angle adjustment of the bionic guide vane 2 is realized.
The invention can obviously change the flow state of incoming flow at the inlet of the inducer and reduce the generation of backflow when the inducer of the centrifugal pump is additionally arranged in front of the inducer. According to the invention, the pre-rotation angle of the guide vane and the difference of the circumferential axial installation positions can be adjusted according to the radial force of the impeller of the centrifugal pump, so that the circumferential axial adjustability of the bionic guide vane is realized, and the service performance of the centrifugal pump is improved.
Claims (3)
1. The utility model provides a circumference axial adjustable barrel with adjustable bionical stator of angle which characterized in that: the barrel is arranged in an upstream pipeline of the centrifugal pump and is coaxially arranged with an inducer or an impeller of the centrifugal pump, the barrel consists of a spline barrel main body (1), a bionic guide vane (2), an axial adjusting wheel disc (4), a ratchet wheel (6), a main pawl sleeve (7), a secondary pawl sleeve (8) and a spline barrel sleeve (10), the spline barrel main body (1) is axially divided into a front section and a rear section, the periphery of the front section is sleeved with the axial adjusting wheel disc (4), a gap is reserved between the inner wall surface of the axial adjusting wheel disc (4) and the outer wall surface of the front section for installing the main pawl sleeve (7), the secondary pawl sleeve (8) and the ratchet wheel (6), the main pawl sleeve (7) is movably sleeved at the front end of the front section so that the main pawl sleeve (7) circumferentially rotates and axially does not move, the secondary pawl sleeve (8) is fixedly sleeved at the tail end of the front section, the main pawl sleeve (7) and the secondary pawl sleeve (8) are in non-contact connection and have an annular gap, a plurality of key slot clamping holes (9) are circumferentially arranged, each key slot clamping hole (9) radially penetrates through the inner wall surface of the spline barrel main body (1), the key slot clamping holes (5) are respectively connected with the spline sleeve (5) through the same structure, one end of the key slot clamping sleeve (5) is fixedly extends out of the key slot clamping sleeve (5), the main pawl sleeve (7) and the auxiliary pawl sleeve (8) are respectively provided with pawls (11) which are used for being meshed with the ratchet wheel (6) at positions close to the ratchet wheel (6), the main pawl sleeve (7) and the auxiliary pawl sleeve (8) are respectively meshed with the ratchet wheel (6) through the respective pawls (11) to form a ratchet pawl mechanism, one end of the connecting shaft (5) extending into the spline cylinder main body (1) is fixedly connected with bionic guide vanes (2), and each bionic guide vane (2) is of a bionic seat head whale fin structure;
the rear section is provided with a spline along the circumferential direction of the outer circumferential surface, each spline tooth of the spline is arranged along the axial direction, the axial lengths of two adjacent spline teeth are different, the outer circumferential surface of the rear section is sleeved with a spline cylinder sleeve (10), the inner circumferential surface of the spline cylinder sleeve (10) is provided with a spline groove used for being matched with the spline, and the tail end of the spline cylinder sleeve (10) is connected in an upstream pipeline of the centrifugal pump through threads;
the bionic guide vane (2) extends inwards along the radial direction of the spline cylinder main body (1) to form a three-dimensional guide vane structure, the cross section of the three-dimensional guide vane structure is in an axisymmetric raindrop shape, the two ends of the raindrop shape are respectively used as the head end and the tail end of the bionic guide vane (2), and the head end is close to the front end inlet of the spline cylinder main body (1) and is provided with a wave-shaped structure of a whale fin of a bionic seat;
the spline is a rectangular spline, the rectangular spline comprises long key teeth and short key teeth which are alternately distributed along the circumferential direction, the lengths of key tooth grooves of the spline cylinder sleeve (10) are also alternately distributed according to the length, and the circumferential and axial positions of the bionic guide vane (2) relative to the centrifugal pump are adjusted through the length matching of the key teeth and the key teeth.
2. The circumferential and axial adjustable cylinder with angularly adjustable bionic guide vanes of claim 1, wherein: the front end of the main pawl sleeve (7) is radially provided with an outwards extending circumferential flange, the surface of the circumferential flange is provided with a dial (3), and the circumference of the dial (3) body is provided with uniformly distributed angle scales for displaying the circumferential adjustment angle of the bionic guide vane (2).
3. The circumferential and axial adjustable cylinder with angularly adjustable bionic guide vanes of claim 1, wherein: the outer peripheral surface of the axial adjusting wheel disc (4) is provided with a circumferential flange which extends outwards along the radial direction, and the circumferential flange is convenient for axial adjustment of the cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910339203.6A CN110159596B (en) | 2019-04-25 | 2019-04-25 | Circumferential and axial adjustable cylinder with angle adjustable bionic guide vanes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910339203.6A CN110159596B (en) | 2019-04-25 | 2019-04-25 | Circumferential and axial adjustable cylinder with angle adjustable bionic guide vanes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110159596A CN110159596A (en) | 2019-08-23 |
| CN110159596B true CN110159596B (en) | 2023-11-28 |
Family
ID=67639987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910339203.6A Active CN110159596B (en) | 2019-04-25 | 2019-04-25 | Circumferential and axial adjustable cylinder with angle adjustable bionic guide vanes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110159596B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6223597A (en) * | 1985-07-24 | 1987-01-31 | Mitsubishi Heavy Ind Ltd | Turbomolecular pump |
| CN201382094Y (en) * | 2009-03-12 | 2010-01-13 | 龙怡 | Electrodeless ball spline slip coupling |
| CN101639085A (en) * | 2008-08-01 | 2010-02-03 | 清华大学 | Energy-saving device and energy-saving method by regulating front guide vanes of centrifugal pump |
| CN104481925A (en) * | 2014-11-27 | 2015-04-01 | 长城汽车股份有限公司 | Supercharger pressure shell, supercharger and vehicle |
| CN207004908U (en) * | 2017-05-26 | 2018-02-13 | 西安理工大学 | A kind of inducer of no blade tip clearance leakage |
-
2019
- 2019-04-25 CN CN201910339203.6A patent/CN110159596B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6223597A (en) * | 1985-07-24 | 1987-01-31 | Mitsubishi Heavy Ind Ltd | Turbomolecular pump |
| CN101639085A (en) * | 2008-08-01 | 2010-02-03 | 清华大学 | Energy-saving device and energy-saving method by regulating front guide vanes of centrifugal pump |
| CN201382094Y (en) * | 2009-03-12 | 2010-01-13 | 龙怡 | Electrodeless ball spline slip coupling |
| CN104481925A (en) * | 2014-11-27 | 2015-04-01 | 长城汽车股份有限公司 | Supercharger pressure shell, supercharger and vehicle |
| CN207004908U (en) * | 2017-05-26 | 2018-02-13 | 西安理工大学 | A kind of inducer of no blade tip clearance leakage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110159596A (en) | 2019-08-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018147950A3 (en) | Counter rotating turbine with reversing reduction gearbox | |
| CN109083844B (en) | Centrifugal pump with disrotatory inducer | |
| CN108457898A (en) | A kind of blade wheel structure for compressor | |
| SU952115A3 (en) | Axial pump | |
| US2678537A (en) | Axial flow turbine type hydraulic torque converter | |
| CN110159596B (en) | Circumferential and axial adjustable cylinder with angle adjustable bionic guide vanes | |
| CN101555860B (en) | Runner vane for axial-flow hydraulic machinery | |
| CN210343860U (en) | Circumferential and axial adjustable barrel with angle-adjustable bionic guide vanes | |
| CN111878282A (en) | Tidal current double-rotating-wheel combined water turbine | |
| CN111550440A (en) | Radial-flow type multistage counter-rotating centrifugal impeller and use method thereof | |
| EP3535497A1 (en) | High efficiency double suction impeller | |
| US2663149A (en) | Rotary turbine-type hydraulic torque converter | |
| RU2647016C2 (en) | Stator and rotor assembly of the turbine and turbine engine | |
| CN108138795A (en) | Centrifugal pump with jagged impeller | |
| RU144432U1 (en) | DISC SECOND STAGE OF THE TORBOJET ENGINE LOW PRESSURE COMPRESSOR ROTOR | |
| CN111878407A (en) | Energy-saving centrifugal water pump | |
| KR101261102B1 (en) | Method of setting performance characteristic of pump and method of manufacturing diffuser vane | |
| CN103939008B (en) | Line projection's blade activation level rotor composite member | |
| CN208778337U (en) | A kind of screw impeller | |
| CN110159538B (en) | Centrifugal pump device for water pipe system | |
| RU144418U1 (en) | LAST-STAGE DISC OF THE LOW PRESSURE COMPRESSOR ROTOR OF THE TURBOREACTIVE ENGINE | |
| RU149750U1 (en) | LOW PRESSURE COMPRESSOR ROTOR TURNER FOR TURBO-REACTIVE ENGINE, DISC COMPOUNT UNIT FOR THE TURBO-RIVER ENGINE LOW PRESSURE COMPRESSOR ROTOR, DELIVERY OF A VALVE-DRIVER | |
| CN111219361B (en) | Impeller structure for compressor or blower | |
| US1910216A (en) | Rotor for axial flow hydraulic machines | |
| CN203730302U (en) | Fourier non-circular gear-driven eight-blade differential 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 |