CN106678075A - Connecting structure for impeller and high-speed shaft of steam compressor - Google Patents
Connecting structure for impeller and high-speed shaft of steam compressor Download PDFInfo
- Publication number
- CN106678075A CN106678075A CN201710109358.1A CN201710109358A CN106678075A CN 106678075 A CN106678075 A CN 106678075A CN 201710109358 A CN201710109358 A CN 201710109358A CN 106678075 A CN106678075 A CN 106678075A
- Authority
- CN
- China
- Prior art keywords
- impeller
- speed shaft
- high speed
- contact surface
- shaft
- 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.)
- Pending
Links
- 230000006835 compression Effects 0.000 claims description 16
- 238000007906 compression Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 9
- 230000007797 corrosion Effects 0.000 claims description 7
- 238000005260 corrosion Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/266—Rotors specially for elastic fluids mounting compressor rotors on shafts
-
- 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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/053—Shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/122—Shaft sealings using sealing-rings 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
-
- 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
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 connecting structure for an impeller and a high-speed shaft of a steam compressor. The connecting structure comprises the impeller and the high-speed shaft. An internal-thread fixing hole is formed in a contact surface of the high-speed shaft, and the impeller and the high-speed shaft are tightly connected in the axial direction through the mode that a pull rod penetrates through an impeller inner hole to be fixed to the high-speed shaft and a locking nut is arranged at the tail end of the pull rod for locking. A contact surface of the impeller is provided with two symmetrical key grooves, the contact surface of the high-speed shaft is provided with two keys matched with the key grooves, and torque is transmitted through matching of the key grooves and the keys when the high-speed shaft and the impeller are connected.
Description
Technical field
The present invention relates to a kind of vapour compression machine field, more particularly to the connection of a kind of vapour compression machine impeller and high speed shaft
Structure.
Background technology
Vapour compression machine is the key equipment that vapor (steam) temperature and pressure are improved in MVR vapo(u)rization systems.In MVR vapo(u)rization systems
In, vapour compression machine realizes the indirect steam recompression in MVR systems as core component, lifts the pressure and temperature of indirect steam
Degree, then enters back into heated material in heat exchanger, reaches the purpose for saving raw steam.Its operation principle is by running up
Impeller, improves the pressure and temperature of steam.
For vapour compression machine, impeller is reliably connected with high speed shaft, is the basic guarantor of unit efficient stable operation
Barrier, current main impeller mainly has following several with the connected mode of high speed shaft：
1. interference connection, the connected mode is reliable and stable, but detachability is poor, more numb for the follow-up repair and maintenance of unit
It is tired.
2. Axis Tripod connection, impeller adopts triangular form face connecting mode with axle, and centering precision is higher, and transmitting torque is bigger.
But the processing request of Axis Tripod is higher, and processing cost is also higher.
3. end-tooth connection, end-tooth area of contact is big, and the accuracy of mesh is high, can transmit larger moment of torsion, and centering is preferable,
Connect more reliable, easy accessibility.But its processing request and cost highest in these three connected modes.
Because the working medium of vapour compression machine is vapor, if without effectively close between impeller and high speed shaft contact surface
Envelope, vapor can to high speed shaft produce corrosion, affect unit operation steady in a long-term, be one than larger potential safety hazard,
There is presently no particularly preferred sealing means.
The content of the invention
Goal of the invention：To solve the defect of prior art, the connection of a kind of vapour compression machine impeller and high speed shaft is now provided
Structure, using pull bar and the connected mode of straight end-face key, it is ensured that impeller is reliably connected with high speed shaft, while in impeller and high speed shaft
Contact surface is sealed using O-ring, effectively prevents vapor from entering contact surface, so as to prevent high speed shaft to be corroded and impact machine
Group stable operation.
Technical scheme：The attachment structure of a kind of vapour compression machine impeller of the present invention and high speed shaft, including impeller with
High speed shaft, has female thread fixing hole, between impeller and high speed shaft by pull bar through in impeller on the high speed shaft contact surface
Hole is fixed on high speed shaft, and guarantees that impeller is closely connected with the axial direction of high speed shaft by locknut locking in pull bar tail end, described
There are two symmetrically arranged keyways on the contact surface of impeller, there are two on the contact surface of the high speed shaft and be engaged with keyway
Key, coordinated by keyway and key when high speed shaft is connected with impeller and realize that moment of torsion is transmitted.
Preferably, having a circle seal groove on the contact surface of the impeller, inside is provided with O-ring and realizes impeller with height
Sealing when fast axle connects.
Preferably, the high speed shaft outside is provided with rustless steel axle sleeve and prevents vapor corrosion high speed shaft, and stainless steel shaft
Set compresses O-ring and realizes sealing.
A kind of disclosed vapour compression machine impeller and the attachment structure of high speed shaft, adopt in connected mode and draw
Bar and locknut coordinate, and stretch pull bar by hydraulic elongator and by nut-locking, realize the end of impeller and high speed shaft
The tight connection of face axial direction；For the positioning of circumferencial direction, fitted shaft is designed with impeller afterbody, and correspondence is designed on high speed shaft
There is mating holes, the positioning of circumferencial direction is realized by both cooperations, and ensure that centering, this structure design reduces processing
Difficulty and guarantee machining accuracy；In order to ensure that moment of torsion is transmitted, by being symmetrical arranged keyway on impeller interface, connect with high speed shaft
Key cooperates in contacting surface, frictional force is produced after impeller is compressed with high speed shaft contact surface and is transmitted, while keyway is matched somebody with somebody with key
Conjunction realizes that moment of torsion is transmitted, and improves the reliability of transmission, because high speed shaft is steel alloy material, its chance water capacity easy-to-rust, therefore
Rustless steel axle sleeve prevents vapor and high speed shaft contact corrosion in high speed shaft outer cover, in addition in order to prevent vapor from contact surface
Into, sealed using O-ring, improve sealing property.
Beneficial effect：The attachment structure of a kind of disclosed vapour compression machine impeller and high speed shaft, using pull bar
With the connected mode of straight end-face key, it is ensured that impeller is reliably connected with high speed shaft, while adopting O shapes in impeller and high speed shaft contact surface
Circle is sealed, and effectively prevents vapor from entering contact surface, and stable operation of unit is affected so as to prevent high speed shaft to be corroded, profit
Effective sealing of impeller and high speed shaft is realized with relatively low cost, the safety of unit operation is improve.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the partial enlarged drawing of Fig. 1；
Fig. 3 is impeller side view；
Fig. 4 is the side view of high speed shaft.
Specific embodiment
Below in conjunction with the accompanying drawing of the present invention, clear, complete description is carried out to the technical scheme of the embodiment of the present invention.
As shown in Fig. 1 ~ 4, the attachment structure of a kind of disclosed vapour compression machine impeller and high speed shaft, including leaf
Wheel 1 and high speed shaft 2, have female thread fixing hole 4, by drawing between impeller and high speed shaft on the contact surface 3 of the high speed shaft 2
Bar 5 is fixed in female thread fixing hole 4 through the endoporus of impeller 1, and the tail end of the pull bar 5 is locked at impeller outside by locknut 6,
Guarantee that impeller is axially closely connected with high speed shaft.
Particularly, the center of contact surface 7 of the impeller 1 has keyway 14, and the contact surface 7 on the outside of keyway is provided with one
Circle seal groove 9, and inside is provided with O-ring 10, the center of contact surface 3 of the high speed shaft 2 has key 11, and it matches with keyway 14
Close, coordinated by keyway and key when high speed shaft is connected with impeller and realize that moment of torsion is transmitted, the outside of the high speed shaft 2 is cased with stainless steel shaft
Set 13 prevents vapor corrosion high speed shaft, and when high speed shaft and impeller are compressed and be connected, rustless steel axle sleeve just pushes down O-ring,
Realize the sealing of contact surface.
A kind of disclosed vapour compression machine impeller and the attachment structure of high speed shaft, adopt in connected mode and draw
Bar and locknut coordinate, and stretch pull bar by hydraulic elongator and by nut-locking, realize the end of impeller and high speed shaft
The tight connection of face axial direction；For the positioning of circumferencial direction, fitted shaft is designed with impeller afterbody, and correspondence is designed on high speed shaft
There is mating holes, the positioning of circumferencial direction is realized by both cooperations, and ensure that centering, this fit structure reduces processing
Difficulty and guarantee machining accuracy；In order to ensure that moment of torsion is transmitted, by being symmetrical arranged two keyways on impeller interface, with high speed
Key cooperates on axle contact surface, the frictional force produced after impeller and high speed shaft contact surface are compressed can with transmitting torque, while
Keyway and key coordinate the transmission that can also realize moment of torsion, improve the reliability of transmission, because high speed shaft is steel matter, itself and water
Contact easy corrosion, therefore rustless steel axle sleeve prevents vapor and high speed shaft contact corrosion in high speed shaft outer cover, in addition for
Prevent vapor from entering from contact surface, sealed using O-ring, improve sealing property.
The technology contents and technical characteristic of the present invention have revealed that as above, but those of ordinary skill in the art still may base
Make a variety of replacements and modification without departing substantially from spirit of the present invention in the announcement of the present invention, therefore, the scope of the present invention should not be limited
In the content disclosed in embodiment, and various replacements and modification without departing substantially from the present invention should be included, and for present patent application right
Requirement is covered.
Claims (3)
1. the attachment structure of a kind of vapour compression machine impeller and high speed shaft, it is characterised in that：Including impeller and high speed shaft, the height
There is female thread fixing hole on fast axle contact surface, female thread is fixed on through impeller by pull bar between impeller and high speed shaft and is fixed
Kong Zhong, and guarantee that impeller is closely connected with the axial direction of high speed shaft by locknut locking in pull bar tail end, the contact surface of the impeller
It is upper that there are two symmetrically arranged keyways, there is two keys being engaged with keyway, high speed shaft on the contact surface of the high speed shaft
Coordinated by keyway and key when being connected with impeller and realize that moment of torsion is transmitted.
2. the attachment structure of vapour compression machine impeller according to claim 1 and high speed shaft, it is characterised in that：The impeller
Contact surface on there is the seal groove of a circle indent, inside is provided with sealing when O-ring realizes that impeller is connected with high speed shaft.
3. the attachment structure of vapour compression machine impeller according to claim 1 and high speed shaft, it is characterised in that：The high speed
Axle outside is provided with rustless steel axle sleeve prevents vapor corrosion high speed shaft, and stainless steel shaft set from compressing O-ring and realizing sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710109358.1A CN106678075A (en) | 2017-02-27 | 2017-02-27 | Connecting structure for impeller and high-speed shaft of steam compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710109358.1A CN106678075A (en) | 2017-02-27 | 2017-02-27 | Connecting structure for impeller and high-speed shaft of steam compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106678075A true CN106678075A (en) | 2017-05-17 |
Family
ID=58862387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710109358.1A Pending CN106678075A (en) | 2017-02-27 | 2017-02-27 | Connecting structure for impeller and high-speed shaft of steam compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106678075A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404336A (en) * | 2018-11-16 | 2019-03-01 | 四川聚亿重工有限公司 | A kind of fastening structure of turbocompressor impeller and axis |
| CN109555715A (en) * | 2019-01-18 | 2019-04-02 | 南通大通宝富风机有限公司 | A kind of horizontal magnetic suspension vapor compressor |
| CN110360136A (en) * | 2018-05-21 | 2019-10-22 | 南通大通宝富风机有限公司 | Vapour compression machine |
| CN113090581A (en) * | 2021-05-11 | 2021-07-09 | 无锡艾尔泰科压缩机有限公司 | Efficient titanium alloy impeller of centrifugal compressor and finish turning method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203770198U (en) * | 2014-02-19 | 2014-08-13 | 重庆通用工业(集团)有限责任公司 | D-shaped corrosion-resistant blower sealing device |
| CN204226264U (en) * | 2014-11-06 | 2015-03-25 | 青岛石化检修安装工程有限责任公司 | A kind of novel seal axle |
| CN104533831A (en) * | 2014-11-21 | 2015-04-22 | 湖北省风机厂有限公司 | Anticorrosion transmission device for shaft end of high-speed blower impeller of vacuum system |
| CN104786004A (en) * | 2015-04-10 | 2015-07-22 | 广西鱼峰水泥股份有限公司 | Restoration method for high-speed gear shaft of reducer |
| CN205663652U (en) * | 2015-11-25 | 2016-10-26 | 苏州欧拉工程技术有限公司 | Connection structure and compressor of compressor impeller and main shaft |
| CN206513619U (en) * | 2017-02-27 | 2017-09-22 | 南通大通宝富风机有限公司 | A kind of attachment structure of vapour compression machine impeller and high speed shaft |
-
2017
- 2017-02-27 CN CN201710109358.1A patent/CN106678075A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203770198U (en) * | 2014-02-19 | 2014-08-13 | 重庆通用工业(集团)有限责任公司 | D-shaped corrosion-resistant blower sealing device |
| CN204226264U (en) * | 2014-11-06 | 2015-03-25 | 青岛石化检修安装工程有限责任公司 | A kind of novel seal axle |
| CN104533831A (en) * | 2014-11-21 | 2015-04-22 | 湖北省风机厂有限公司 | Anticorrosion transmission device for shaft end of high-speed blower impeller of vacuum system |
| CN104786004A (en) * | 2015-04-10 | 2015-07-22 | 广西鱼峰水泥股份有限公司 | Restoration method for high-speed gear shaft of reducer |
| CN205663652U (en) * | 2015-11-25 | 2016-10-26 | 苏州欧拉工程技术有限公司 | Connection structure and compressor of compressor impeller and main shaft |
| CN206513619U (en) * | 2017-02-27 | 2017-09-22 | 南通大通宝富风机有限公司 | A kind of attachment structure of vapour compression machine impeller and high speed shaft |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360136A (en) * | 2018-05-21 | 2019-10-22 | 南通大通宝富风机有限公司 | Vapour compression machine |
| CN109404336A (en) * | 2018-11-16 | 2019-03-01 | 四川聚亿重工有限公司 | A kind of fastening structure of turbocompressor impeller and axis |
| CN109404336B (en) * | 2018-11-16 | 2023-12-22 | 四川聚亿重工有限公司 | Fastening structure of turbine compressor impeller and shaft |
| CN109555715A (en) * | 2019-01-18 | 2019-04-02 | 南通大通宝富风机有限公司 | A kind of horizontal magnetic suspension vapor compressor |
| CN113090581A (en) * | 2021-05-11 | 2021-07-09 | 无锡艾尔泰科压缩机有限公司 | Efficient titanium alloy impeller of centrifugal compressor and finish turning method |
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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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170517 |