CN207991619U - A kind of gas turbine meter impeller of special construction - Google Patents
A kind of gas turbine meter impeller of special construction Download PDFInfo
- Publication number
- CN207991619U CN207991619U CN201720296379.4U CN201720296379U CN207991619U CN 207991619 U CN207991619 U CN 207991619U CN 201720296379 U CN201720296379 U CN 201720296379U CN 207991619 U CN207991619 U CN 207991619U
- Authority
- CN
- China
- Prior art keywords
- impeller
- bearing
- flow
- fixed
- holder
- 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
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The utility model belongs to gas flow measurement field, more particularly to a kind of gas turbine meter impeller of special construction, in lead, holder, bearing arrangement, main shaft point, impeller, it is characterized in that impeller, which encloses, rotates around the spindle fixation, main shaft is fixed with bearing arrangement, bearing arrangement is fixed with holder, in lead and fixed with bearing arrangement, impeller includes impeller body, mounting hole, blade, dust cover and flow-disturbing slot, blade is arranged in impeller body surrounding, mounting hole is arranged at impeller body center, the side of impeller body is arranged in dust cover, design flow-disturbing slot the beneficial effects of the utility model in dust cover rear end：Can normal use in the work condition environment of (coal quality gas, air) more in dust, fill up industry blank；Suitable for big flow, the applying working condition of high flow rate enhances the impact resistance of conventional turbine flowmeter, prolongs the service life, and indirectly reduces the workload of cleaning filter, reduces operation cost.
Description
Technical field
The utility model belong to gas flow measurement field, especially dust more (coal quality gas, air), big flow work
The gas turbine meter impeller of condition environment more particularly to a kind of special construction.
Background technology
In flow instrument, turbine flowmeter uses extensive, accuracy of instrument height.Traditional gas turbine meter is for existing
The cleanliness factor of field operating mode medium has very high requirement.It, can be to the service life of turbine flowmeter if medium cleanliness factor is inadequate
There is serious influence, greatly shortens its service life；If using gas turbine meter under this working condition, just must
The high filter of filtering accuracy must be installed additional to result in due to easily blocking under the dusty operating mode of high-precision filter
The frequent maintenance and cleaning of filter, increases workload, increases operation cost.The bearing used in flowmeter is Minisize axial
It holds, axial carrying load very little can cause to impact when flow is excessive to bearing, damages bearing, reduces the service life.
Utility model content
To solve to solve gas turbine meter dust is more, normally works that this is asked under work condition environment of big flow
Topic, the utility model use the characteristic of fluid itself flowing, and medium is upset in leaf by adding flow-disturbing slot to impeller outflow side
The dust medium for taking turns exit, then takes away dust using fluid itself；When flow velocity is excessive, flow-disturbing slot leads cooperation shape in
At high-pressure area, a fluid is generated to impeller and flows to opposite thrust, reduces the axial force under big flow velocity operating mode, improves it
Service life provides a kind of gas turbine meter impeller of special construction.
The technical solution of the utility model：A kind of gas turbine meter impeller of special construction, including in lead, holder,
Bearing arrangement, main shaft point, impeller, it is characterised in that the impeller is fixed around main shaft rotation, the main shaft and the axis
The system of holding is fixed, and the bearing arrangement is fixed with holder, in lead and fixed with bearing arrangement, flow-disturbing slot is set on the impeller.
Preferably, the impeller includes impeller body, mounting hole, blade, dust cover and flow-disturbing slot, and the blade setting exists
The impeller body surrounding, the mounting hole are arranged at the impeller body center, and the impeller sheet is arranged in the dust cover
Flow-disturbing slot is designed in the side of body, the dust cover rear end.
The bearing arrangement includes bearing, bearing gland, wave washer and pan head screw, and the main shaft and the branch are rack-mounted
With fixation, the wave washer is assemblied between the bearing and the holder, and the bearing gland presses on the bearing,
The bearing gland outer circle is fixed with holder seam allowance cooperation positioning, is fixed on the bearing gland with the pan head screw
On the holder.
Preferably, the impeller is fixed by the mounting hole and the main shaft and the bearing；
The pan head screw will be consolidated the bearing gland by the way that the ream flat hole on the bearing gland circumference is arranged
Determine on the bracket.
Preferably, the impeller with it is described in lead gap be 0.3-0.6mm；
The flow-disturbing slot size R1-2mm, L4-6mm, depth 1-2mm, the flow-disturbing slot slot bottom are with impeller inner wall thickness
0.3mm, the flow-disturbing slot number are identical as the impeller blade number.
The beneficial effects of the utility model：
1. can normal use in the work condition environment of (coal quality gas, air) more in dust, fill up industry blank.
2. being suitable for big flow, the applying working condition of high flow rate enhances the impact resistance of conventional turbine flowmeter, extends and uses
Service life.
3. indirectly reducing the workload of cleaning filter, operation cost is reduced.
Description of the drawings
Fig. 1 is the scheme of installation of the utility model.
Fig. 2 is the partial enlarged view of Fig. 1.
Fig. 3 is the structural schematic diagram of the utility model.
Fig. 4 is the vertical view of the utility model.
Fig. 5 is the vertical view of the utility model.
Fig. 6 is the structural schematic diagram of the utility model.
Fig. 7 is the structural schematic diagram of the bearing gland of the utility model.
It in figure, is led in 1., 2. holders, 3. bearing arrangements, 4. main shafts, 5. impellers, 6. impeller bodies, 7. mounting holes, 8. leaves
Piece, 9. dust covers, 10. flow-disturbing slots, 11. bearings, 12. bearing glands, 13. wave washers, 14. pan head screws, 15. ream flat hole,
16. threaded hole.
Specific implementation mode
It explains below in conjunction with the accompanying drawings to a kind of specific implementation mode of the utility model.
In attached drawing, led in 1., 2. holders, 3. bearing arrangements, 4. main shafts, 5. impellers, 6. impeller bodies, 7. mounting holes, 8.
Blade, 9. dust covers, 10. flow-disturbing slots, 11. bearings, 12. bearing glands, 13. wave washers, 14. pan head screws, 15. reams are flat
Hole, 16. threaded holes
The utility model is related to a kind of gas turbine meter impellers of special construction, including in lead, holder, bearing system
It unites, main shaft point, impeller, it is characterised in that impeller, which encloses, rotates around the spindle fixation, and main shaft is fixed with bearing arrangement, bearing arrangement and branch
Frame is fixed, in lead and fixed with bearing arrangement, flow-disturbing slot is set on impeller, the characteristic flowed with fluid itself, by impeller
Flow-disturbing slot is added on the dust cover of outflow side to upset dust medium of the medium at impeller outlet, then utilizes fluid itself ash
Dust lane is walked, and isolation dust enters bearing arrangement path.
Impeller includes impeller body, mounting hole, blade, dust cover and flow-disturbing slot, and blade setting is in impeller body surrounding, peace
It fills hole to be arranged at impeller body center, the side of impeller body is arranged in dust cover, and flow-disturbing slot is designed in dust cover rear end, with stream
The characteristic of body itself flowing, by upsetting ash of the medium at impeller outlet to adding flow-disturbing slot on the dust cover of impeller outflow side
Then dirt medium is taken away dust using fluid itself, isolation dust enters bearing arrangement path.
Bearing arrangement includes bearing, bearing gland, wave washer and pan head screw, and main shaft is fixed with holder assembly, waveform
Washer is assemblied between bearing and holder, and bearing gland presses on bearing, and bearing gland outer circle is positioned with the cooperation of holder seam allowance
It is fixed, bearing gland is fixed on holder with pan head screw.Wave washer is assemblied between bearing and holder, and fluid rushes suddenly
When hitting wave washer there are shaft strengths a cushioning effect power, play the role of protecting bearing, bearing gland presses in axis
It holds, bearing gland outer circle is fixed with the cooperation positioning of holder seam allowance, the outer circle (- 0.01~-0.05mm) and holder of bearing gland
Seam allowance (0~0.02) ensures relative position between bearing gland, bearing and holder with hole base system of fits, with pan head screw by bearing
Gland is fixed on holder, and installation process middle (center) bearing itself by additional stress, does not improve bearing service life, this technology side
The processing of part of case overall simplification, complete machine assembly technology；The shock resistance for promoting small-bore instrument improves the use of instrument
Service life.
Impeller is fixed by mounting hole and main shaft and bearing, and installation is simple and fast；
Bearing gland will be fixed on holder by the ream flat hole being arranged on bearing gland circumference with pan head screw, institute
It states to distribute alternately with the ream flat hole on bearing gland circumference and has threaded hole.Bearing gland processing technology is after the completion of lathe process
Then pincers worker is punched, and critical size (bearing gland excircle dimension) control is simple；Ream flat hole is wanted relative to the position degree of counter sink
Relative loose is sought, it is convenient when hole that ream flat hole pincers worker is processed, of low cost, and is easily guaranteed that its service precision, bearing gland
Structure directly eliminates the extra-stress generated when bearing installation, improves bearing service life.
It is 0.3-0.6mm that impeller leads gap in；
Flow-disturbing slot size R1-2mm, L4-6mm, depth 1-2mm, flow-disturbing slot slot bottom are 0.3mm with impeller inner wall thickness, are disturbed
Chute number is identical as impeller blade number.
The course of work is as follows：Main shaft is fixed with holder assembly；Wave washer is assemblied between bearing and holder；Bearing gland
It presses on bearing, bearing gland outer circle is positioned with the cooperation of holder seam allowance, ensures opposite position between bearing gland, bearing and holder
It sets, bearing gland is fixed on holder with pan head screw, installation process middle (center) bearing itself by additional stress, does not improve axis
Hold service life；Impeller is fixed by the pilot hole among bearing gland with axis and bearing, and assembly is completed, and assembly is simple and fast,
Flow-disturbing slot is set on impeller.
It throttling at impeller blade when flow-disturbing slot is not set, flow velocity improves, after going out impeller, since circulation area increases,
Flow velocity reduces, and forms negative pressuren zone in wheel backface, dust is easy to accumulate at this point, subsequently into bearing arrangement, be asked to solve this
It inscribes and flow-disturbing slot is set on impeller blade dust cover, the characteristic flowed with fluid itself, by the dust cover of impeller outflow side
Flow-disturbing slot is added to upset dust medium of the medium at impeller outlet, then dust is taken away using fluid itself, isolation ash
Dirt enters bearing arrangement path；When flow velocity is excessive, flow-disturbing slot leads in and cooperatively forms high-pressure area, and a stream is generated to impeller
Body flows to opposite thrust, reduces the axial force under big flow velocity operating mode, improves its service life.
Flow-disturbing slot size R1-2mm, L4-6mm, depth 1-2mm, flow-disturbing slot slot bottom are 0.3mm with impeller inner wall thickness, are disturbed
Chute number is identical as the number of blade.When flow is excessive, flow-disturbing slot leads clearance fit in, forms higher-pressure region, pressure is to impeller
It results from fluid and flows to opposite effect power, the axial bearing capacity of bearing is made to reduce, improve bearing service life.Impeller is led in
Gap is 0.3-0.6mm；
Flow-disturbing slot structure is directly being solved operating mode medium dust is more, turbine flowmeter under use environment of big flow
Bearing arrangement damages, and impact resistance is bad, the low problem of service life.Enhance the impact resistance of conventional turbine flowmeter, extends
Service life.The problem of also mitigating cleaning filter heavy workload simultaneously.The turbine flowmeter of this structure is used, installation, is tieed up
Shield is conveniently saved worry, and is reduced operation cost, is improved service life.
Compared with prior art, can normal use in the work condition environment of (coal quality gas, air) more in dust, fill up capable
Industry blank；Suitable for big flow, the applying working condition of high flow rate.Enhance the impact resistance of conventional turbine flowmeter, extends and use the longevity
Life；The workload for indirectly reducing cleaning filter, reduces operation cost.
An example of the utility model is described in detail above, but content is only the preferable reality of the utility model
Example is applied, should not be considered as limiting the scope of the present invention.Equalization made according to the scope of application of this utility model
Variation and improvement etc., should all still belong within the patent covering scope of the utility model.
Claims (4)
1. a kind of gas turbine meter impeller of special construction, including in lead, holder, bearing arrangement, main shaft, impeller, it is special
Sign is that the impeller is fixed around main shaft rotation, and the main shaft fixes with the bearing arrangement, the bearing arrangement and
Holder is fixed, in lead and fixed with bearing arrangement, flow-disturbing slot is set on the impeller.
2. a kind of gas turbine meter impeller of special construction according to claim 1, it is characterised in that the impeller
Including impeller body, mounting hole, blade, dust cover and flow-disturbing slot, the blade is arranged in the impeller body surrounding, the peace
It fills hole to be arranged at the impeller body center, the side of the impeller body, the dust cover rear end is arranged in the dust cover
Design flow-disturbing slot；
The bearing arrangement includes bearing, bearing gland, wave washer and pan head screw, and the main shaft and holder assembly are solid
Fixed, the wave washer is assemblied between the bearing and the holder, and the bearing gland presses on the bearing, described
The cooperation positioning of bearing gland outer circle and the holder seam allowance is fixed, and is fixed on the bearing gland with the pan head screw described
On holder.
3. a kind of gas turbine meter impeller of special construction according to claim 2, it is characterised in that the impeller
It is fixed by the mounting hole and the main shaft and the bearing；The pan head screw is by being arranged in the bearing gland circumference
On ream flat hole by the bearing gland fix on the bracket.
4. a kind of gas turbine meter impeller of special construction according to claim 1 or 2 or 3, it is characterised in that institute
State impeller with it is described in lead gap be 0.3-0.6mm；The flow-disturbing slot ruler R1-2mm, L4-6mm, depth 1-2mm, the flow-disturbing
Slot slot bottom is 0.3mm with impeller inner wall thickness, and the flow-disturbing slot number is identical as the impeller blade number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720296379.4U CN207991619U (en) | 2017-03-24 | 2017-03-24 | A kind of gas turbine meter impeller of special construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720296379.4U CN207991619U (en) | 2017-03-24 | 2017-03-24 | A kind of gas turbine meter impeller of special construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207991619U true CN207991619U (en) | 2018-10-19 |
Family
ID=63803131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720296379.4U Active CN207991619U (en) | 2017-03-24 | 2017-03-24 | A kind of gas turbine meter impeller of special construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207991619U (en) |
-
2017
- 2017-03-24 CN CN201720296379.4U patent/CN207991619U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107939699B (en) | Magnetic suspension compressor structure | |
| CN104759648A (en) | Machining tool and machining method for precise step holes of aluminum alloy thin-wall casing | |
| CN207991619U (en) | A kind of gas turbine meter impeller of special construction | |
| CN114294329A (en) | Novel gas static pressure restrictor with turbocharging function | |
| CN207013775U (en) | A kind of milling cutter construction | |
| CN201297208Y (en) | Bearing unit with extruded oil film groove and squirrel-cage elasticity supporting structure | |
| CN205154735U (en) | Water pump with novel leaf wheel clearance adjusting device | |
| CN201293044Y (en) | High speed principal axis liquid plain bearing end plane throttle structure | |
| CN205147999U (en) | Emery wheel grinding device | |
| CN205715272U (en) | A kind of full supporting air-bearing | |
| CN104625821A (en) | Novel cutter handle component | |
| CN210050042U (en) | Centrifugal impeller pump | |
| CN206683698U (en) | A kind of gas turbine meter available for dust environment | |
| CN211477553U (en) | Vibration test device of aero-engine blisk | |
| CN102717333B (en) | High-speed electric main shaft structure of machine tool | |
| RU2587371C1 (en) | High-speed motor spindle for metal cutting machines | |
| CN204346641U (en) | A kind of Purely mechanical high speed chief axis on-line dynamic poise head | |
| CN201908955U (en) | Pressure equalization groove structure for pneumatic bearing | |
| CN103953568B (en) | Balancing frame in solid-liquid two-phase flow carries | |
| CN103758866A (en) | Combined radial thrust bearing for precision centrifuge | |
| CN207372304U (en) | Axle core component and air-flotation electric spindle | |
| CN202545261U (en) | Oil supply device of horizontal rotary compressor | |
| CN207358301U (en) | A kind of skiving lathe cutter saddle structure | |
| CN106677836B (en) | Jet sectional center supporting vibration damping adjusts the method and device of steam turbine sealing gland | |
| CN206780154U (en) | A kind of high-precision high-speed bearing lapping device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |