CN201953718U - Vane adjustable diffuser of centrifugal compressor - Google Patents
Vane adjustable diffuser of centrifugal compressor Download PDFInfo
- Publication number
- CN201953718U CN201953718U CN2010206672989U CN201020667298U CN201953718U CN 201953718 U CN201953718 U CN 201953718U CN 2010206672989 U CN2010206672989 U CN 2010206672989U CN 201020667298 U CN201020667298 U CN 201020667298U CN 201953718 U CN201953718 U CN 201953718U
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- centrifugal compressor
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- screw shaft
- lead screw
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Abstract
The utility model relates to a diffuser, in particular to a vane adjustable diffuser of a centrifugal compressor. The vane adjustable diffuser comprises a casting body and a screw shaft, wherein connecting blocks are uniformly arranged on the casting body along the circumferential direction at intervals and connected with a driven vane shaft arranged in the casting body by fastening nuts, the neighboring connecting blocks are connected by a connecting rod, and the connecting rods and the connecting blocks are articulated by cylindrical pins with slots; the bottom end of the casting body is provided with a driving vane drive block which is connected with a driving vane shaft arranged in the casting body by the fastening nuts, the driving vane drive block is connected with the neighboring connecting blocks by the connecting rods, and the connecting rods are articulated with the driving vane drive block by the cylindrical pins with the slots; and the bottom end of the driving vane drive block is provided with a groove, a cam driven bearing is clamped in the groove, the other end of the cam driven bearing is fixedly connected with a slide block, and the slide block is connected with the screw shaft by screw threads. The vane adjustable diffuser can obviously improve the comprehensive performance of the whole centrifugal compressor under flow variable working conditions.
Description
Technical field
The utility model relates to a kind of centrifugal compressor diffuser that is used for large-scale chiller plant, relates in particular to the Diffuser that a kind of centrifugal compressor blade linkage is regulated.
Background technique
Diffuser is one of main Pneumatic component of idle call centrifugal compressor, can be divided into two kinds of vaneless diffuser and vaned diffusers on the structure, and wherein the vaned diffuser application area is wider.It is adjustable that vaned diffuser can be divided into vanes fixed formula and blade again.All blades of vanes fixed formula Diffuser adopts disposable Milling Process to be shaped, cost is relatively low, but its high-effect operation interval is very narrow, when compressor load changes, can't regulate inlet incidence angle to adapt to the change of flow, can not guarantee that unit can both be with high-efficiency operation under various different operating modes.In addition because vanes fixed, along with constantly the reducing inlet incidence angle and can increase gradually of flow, when inlet incidence angle increased to a certain degree, the serious disengaging can take place in fluid in Diffuser, and then made compressor generation surge.The adjustable Diffuser of blade is because mechanical structure realizes that relatively the present application of difficulty is fewer, but because the adjustable shutter Diffuser has the interval and good low-load anti-surge ability of very wide high performance operation, its application is also day by day extensive.
The various informative of actuator of adjustable shutter Diffuser differs at present, and it is current two kinds of more common forms that gear drive and sheave crank drive.But the form part processing precision of gear drive requires high, and it is lubricated to need to continue fuel feeding in the running, complex structure and existence counter-rotating gap, and precision can't guarantee that practicability is relatively poor.And the drive form of sheave crank, because sheave cooperates the circumferential contact face big, if the not high enough or lubricated bad eccentric deadlock that forms that is easy to produce of machining accuracy is also inapplicable in the actual production.
The model utility content
Technique effect of the present utility model can overcome above-mentioned defective, and a kind of novel centrifugal compressor adjustable shutter Diffuser is provided, and it can realize the interlock step-less adjustment of all blades of Diffuser.
To achieve these goals, the utility model adopts following technological scheme, it comprises the body of casting and lead screw shaft, contiguous block along the circumferential direction evenly is set on the body of casting at interval, contiguous block is connected with passive blade axle in being arranged on the body of casting by tightening nut, connect by connecting rod between the adjacent contiguous block, hinged between connecting rod and the contiguous block by the trough of belt straight pin; The bottom of the body of casting is provided with the active blade driving block, the active blade driving block is connected with active blade axle in being arranged on the body of casting by tightening nut, be connected by connecting rod between active blade driving block and the adjacent contiguous block, hinged between connecting rod and the active blade driving block by the trough of belt straight pin; The bottom of active blade driving block is provided with groove, and cam follower shaft holds and is connected in the groove, and cam follower shaft holds the other end and slide block is affixed, and by being threaded, slide block is arranged on the linear rail, and can slide along linear rail between slide block and the lead screw shaft.
Connecting rod, the contiguous block of this device interlock part adopt parallelogram linkage, realize the interlock of all blades with simple relatively form; Drive part adopts the screw pair of band anti-backlash mechanism to drive, and on the slide block that lead screw shaft matches cam follower shaft is housed and holds, the matching gap that produces owing to slider wear with maximum minimizing; The axial force that the leading screw axle head produces when adopting needle roller thrust bearing to come the balance drive vane; All parts that cooperate with running shaft adopt the self lubrication bearing of brass material with the raising wear resistance that reduces friction.
All be provided with two trough of belt straight pins on each contiguous block and the active blade driving block, each trough of belt straight pin connects with corresponding connecting rod respectively.
Set gradually self lubrication bearing, O type circle and packing ring between the periphery of passive blade axle and the body of casting.Because in cooling centrifugal compressor inside, there is big pressure reduction in the interior outside of Diffuser, and also there is big pressure reduction in compressor inside with external environment condition.So adopt rubber o-ring and the poly-tetrafluoro packing ring of V-type to seal respectively at sharf and lead screw shaft part, to guarantee the tightness of mechanism.
Set gradually wavy spring pad and end face pad between the tightening nut and the body of casting.The end of linear rail is provided with projection, and the leading screw the tip of the axis is connected with projection, is provided with self lubrication bearing between the periphery of lead screw shaft and the projection, and lead screw shaft is provided with thrust needle roller axle sleeve with the both sides of projection.
The two ends of linear rail are provided with limit switch, and slide block slides along linear rail in limit switch.Mechanism exceeds setting value by step motor drive for preventing the blade angle of swing, and the extreme position in the slide block both sides is provided with a limit switch respectively to guarantee the Security of entire mechanism operation.
The end of lead screw shaft is provided with sealing nut, shim pack and self lubrication bearing successively.
Do not need to be provided with special lubricating fitting in the running of this mechanism,,, can guarantee the precision of transmission even long-time running can not produce the counter-rotating gap yet in addition because screw thread has been equipped with anti-backlash mechanism; Thrust needle roller axle sleeve and self lubrication bearing be used the resistance of then can reducing friction greatly, improve working life.
The effect of self lubrication bearing is to reduce surface friction drag, reduces wear; The effect of packing ring is to reduce friction and seal; The effect of O type circle then is the reliability that guarantees sealing.
The utility model is simple and reliable, good stability, control accuracy height, by accurate control to blade angle, it can widen the high performance operation interval of Diffuser significantly, effectively reduce the centrifugal compressor pumping point, thereby improve the combination property of whole centrifugal compressor under flow variable working condition condition.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is done detailed description:
Fig. 1 is adjustable Diffuser integral shaft front side view;
Fig. 2 is adjustable Diffuser integral shaft rear side view;
Fig. 3 is adjustable Diffuser plan view;
Fig. 4 is an A-A sectional view among Fig. 3;
Fig. 5 is a B-B sectional view among Fig. 3;
Fig. 6 is adjustable Diffuser side view;
Fig. 7 is a C-C sectional view among Fig. 6.
Among the figure: 1. screw axis; 2. sealing nut; 3. shim pack; 4. self lubrication bearing; 5. the body of casting; 6. thrust needle roller axle sleeve; 7.O type circle; 8. slide block; 9. guide rail; 10. limit switch; 11. cam follower shaft holds; 12. active blade driving block; 13. active blade axle; 14. passive blade axle; 15. contiguous block; 16. connecting rod; 17. tightening nut; 18. end face pad; 19. wavy spring pad; 20. trough of belt straight pin; 21. jump ring; 22. packing ring; 23. groove; 24. projection.
Embodiment
The utility model comprises the body of casting 5 and lead screw shaft 1, contiguous block 15 along the circumferential direction evenly is set on the body of casting 5 at interval, contiguous block 15 is connected with passive blade axle 14 in being arranged on the body of casting by tightening nut 17, connect by connecting rod 16 between the adjacent contiguous block 15, hinged between connecting rod 16 and the contiguous block 15 by trough of belt straight pin 20; The bottom of the body of casting 5 is provided with active blade driving block 12, active blade driving block 12 is connected with active blade axle 13 in being arranged on the body of casting by tightening nut 17, be connected by connecting rod 16 between active blade driving block 12 and the adjacent contiguous block 15, hinged between connecting rod 16 and the active blade driving block 12 by trough of belt straight pin 20; The bottom of active blade driving block 12 is provided with groove 23, cam follower shaft holds 11 and is connected in the groove 23, and cam follower shaft holds 11 the other ends and slide block 8 is affixed, between slide block 8 and the lead screw shaft 1 by being threaded, slide block 8 is arranged on the linear rail 9, and can slide along linear rail 9.
All be provided with two trough of belt straight pins 20 on each contiguous block 15 and the active blade driving block 12, each trough of belt straight pin 20 connects with corresponding connecting rod 16 respectively.Set gradually self lubrication bearing 4, O type circle 7 and packing ring 22 between the periphery of passive blade axle 14 and the body of casting 5.Set gradually wavy spring pad 19 and end face pad 18 between the tightening nut 17 and the body of casting 5.The end of linear rail 9 is provided with projection 24, and the end of lead screw shaft 1 is connected with projection 24, is provided with self lubrication bearing 4 between the periphery of lead screw shaft 1 and the projection 24, and lead screw shaft 1 is provided with thrust needle roller axle sleeve 6 with the both sides of projection 24.The two ends of linear rail 9 are provided with limit switch 10, and slide block 8 slides along linear rail 9 in limit switch 10.The end of lead screw shaft 1 is provided with sealing nut 2, shim pack 3 and self lubrication bearing 4 successively.
Be formed centrally the parallelogram that can swing arbitrarily during of the present utility model two adjacent contiguous block 15 rotating centers and connecting rod 16 two are hinged, when all slide block structures were all identical, this structure can realize the synchronous interaction of all sharfs.
The parallelogram linkage that connects each sharf mainly is made up of contiguous block 15 and connecting rod 16, being connected of contiguous block 15 and passive blade axle 14 adopts the mode of band key interference fit to improve Location accuracy and reduce assembly error, increased wavy spring pad 19 between the tightening nut 17 of axle head and the end face pad 18 and has been used to control pretightening force and locking.Be connected the form that has adopted trough of belt straight pin 20 and jump ring 21 between contiguous block 15 and the connecting rod 16.
Summarizing the pass order of power on sleeve mechanism is:
Stepper motor → lead screw shaft 1 → slide block 8 → active blade axle 13 → parallelogram linkage → passive blade axle 14.
Power is through after the above transmission, and the interlock that has been become all blades by the rotation of stepper motor is rotated, and has finally realized the purpose that all blades of blade diffuser can link and regulate.
Claims (7)
1. centrifugal compressor adjustable shutter Diffuser, comprise the body of casting (5) and lead screw shaft (1), it is characterized in that, contiguous block (15) along the circumferential direction evenly is set on the body of casting (5) at interval, contiguous block (15) is connected by tightening nut (17) the passive blade axle (14) interior with being arranged on the body of casting, connect by connecting rod (16) between the adjacent contiguous block (15), hinged between connecting rod (16) and the contiguous block (15) by trough of belt straight pin (20); The bottom of the body of casting (5) is provided with active blade driving block (12), active blade driving block (12) is connected by tightening nut (17) the active blade axle (13) interior with being arranged on the body of casting, be connected by connecting rod (16) between active blade driving block (12) and the adjacent contiguous block (15), hinged between connecting rod (16) and the active blade driving block (12) by trough of belt straight pin (20); The bottom of active blade driving block (12) is provided with groove (23), cam follower shaft holds (11) and is connected in the groove (23), cam follower shaft holds (11) the other end and slide block (8) is affixed, between slide block (8) and the lead screw shaft (1) by being threaded, slide block (8) is arranged on the linear rail (9), and can slide along linear rail (9).
2. centrifugal compressor adjustable shutter Diffuser according to claim 1, it is characterized in that, all be provided with two trough of belt straight pins (20) on each contiguous block (15) and the active blade driving block (12), each trough of belt straight pin (20) connects with corresponding connecting rod (16) respectively.
3. centrifugal compressor adjustable shutter Diffuser according to claim 1 and 2 is characterized in that, sets gradually self lubrication bearing (4), O type circle (7) and packing ring (22) between the periphery of passive blade axle (14) and the body of casting (5).
4. centrifugal compressor adjustable shutter Diffuser according to claim 3 is characterized in that, sets gradually wavy spring pad (19) and end face pad (18) between the tightening nut (17) and the body of casting (5).
5. centrifugal compressor adjustable shutter Diffuser according to claim 1 and 2, it is characterized in that, the end of linear rail (9) is provided with projection (24), the end of lead screw shaft (1) is connected with projection (24), be provided with self lubrication bearing (4) between the periphery of lead screw shaft (1) and the projection (24), lead screw shaft (1) is provided with thrust needle roller axle sleeve (6) with the both sides of projection (24).
6. centrifugal compressor adjustable shutter Diffuser according to claim 5 is characterized in that the two ends of linear rail (9) are provided with limit switch (10), and slide block (8) slides along linear rail (9) in limit switch (10).
7. centrifugal compressor adjustable shutter Diffuser according to claim 5 is characterized in that, the end of lead screw shaft (1) is provided with sealing nut (2), shim pack (3) and self lubrication bearing (4) successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206672989U CN201953718U (en) | 2010-12-17 | 2010-12-17 | Vane adjustable diffuser of centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206672989U CN201953718U (en) | 2010-12-17 | 2010-12-17 | Vane adjustable diffuser of centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201953718U true CN201953718U (en) | 2011-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206672989U Expired - Lifetime CN201953718U (en) | 2010-12-17 | 2010-12-17 | Vane adjustable diffuser of centrifugal compressor |
Country Status (1)
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| CN (1) | CN201953718U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619736A (en) * | 2012-04-16 | 2012-08-01 | 杭州杭氧透平机械有限公司 | Executive mechanism of air-intake-adjustable flow guide cascade of oxygen compressor |
| CN103511351A (en) * | 2013-10-08 | 2014-01-15 | 无锡杰尔压缩机有限公司 | Direct driving type pressure expanding guide vane adjusting device |
| WO2015070637A1 (en) * | 2013-11-18 | 2015-05-21 | 珠海格力电器股份有限公司 | Centrifugal compressor and centrifugal water chilling unit |
| CN105041721A (en) * | 2015-07-15 | 2015-11-11 | 黑龙江凯普瑞机械设备有限公司 | Blade diffuser and volute assembly and compressor |
| CN105240306A (en) * | 2015-10-15 | 2016-01-13 | 珠海格力电器股份有限公司 | Drive device and compressor |
| CN105730675A (en) * | 2014-12-30 | 2016-07-06 | 空中客车运营简化股份公司 | Joint Assembly And Method Connecting An Aircraft Belly Fairing To The Fuselage Provided With A Particularly Positioned Stringer |
| CN107816457A (en) * | 2017-10-19 | 2018-03-20 | 北京理工大学 | A kind of centrifugal compressor diffuser |
| CN108302048A (en) * | 2018-03-15 | 2018-07-20 | 山东天瑞重工有限公司 | A kind of magnetic suspension compressor flow regulator |
| CN109026723A (en) * | 2018-08-30 | 2018-12-18 | 中山市创星电器有限公司 | A kind of crossing current pump of adjustable water discharging direction |
| CN109210012A (en) * | 2018-09-30 | 2019-01-15 | 武汉格瑞拓机械有限公司 | A kind of symmetric double crank space connecting-rod is used for radially-arranged multi-axis turning mechanism |
| CN109356873A (en) * | 2018-09-30 | 2019-02-19 | 武汉格瑞拓机械有限公司 | A kind of long short pitch chain-drive multi-axis turning mechanism |
| CN110067778A (en) * | 2019-06-06 | 2019-07-30 | 安徽虎渡科达流体机械有限公司 | A kind of adjustable diffuser and its refrigeration compressor |
| CN114109915A (en) * | 2020-08-31 | 2022-03-01 | 复盛股份有限公司 | Air flow regulating device of fluid machinery |
-
2010
- 2010-12-17 CN CN2010206672989U patent/CN201953718U/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619736A (en) * | 2012-04-16 | 2012-08-01 | 杭州杭氧透平机械有限公司 | Executive mechanism of air-intake-adjustable flow guide cascade of oxygen compressor |
| CN103511351A (en) * | 2013-10-08 | 2014-01-15 | 无锡杰尔压缩机有限公司 | Direct driving type pressure expanding guide vane adjusting device |
| RU2653707C1 (en) * | 2013-11-18 | 2018-05-14 | Грии Електрик Апплиансес, Инк. Оф Чжухай | Centrifugal compressor and centrifugal water chilling unit |
| WO2015070637A1 (en) * | 2013-11-18 | 2015-05-21 | 珠海格力电器股份有限公司 | Centrifugal compressor and centrifugal water chilling unit |
| US10302097B2 (en) | 2013-11-18 | 2019-05-28 | Gree Electric Appliances, Inc. Of Zhuhai | Centrifugal compressor and centrifugal water chilling unit |
| CN105730675A (en) * | 2014-12-30 | 2016-07-06 | 空中客车运营简化股份公司 | Joint Assembly And Method Connecting An Aircraft Belly Fairing To The Fuselage Provided With A Particularly Positioned Stringer |
| CN105041721A (en) * | 2015-07-15 | 2015-11-11 | 黑龙江凯普瑞机械设备有限公司 | Blade diffuser and volute assembly and compressor |
| CN105240306A (en) * | 2015-10-15 | 2016-01-13 | 珠海格力电器股份有限公司 | Drive device and compressor |
| CN105240306B (en) * | 2015-10-15 | 2018-01-02 | 珠海格力电器股份有限公司 | A kind of drive device and compressor |
| CN107816457A (en) * | 2017-10-19 | 2018-03-20 | 北京理工大学 | A kind of centrifugal compressor diffuser |
| CN108302048A (en) * | 2018-03-15 | 2018-07-20 | 山东天瑞重工有限公司 | A kind of magnetic suspension compressor flow regulator |
| CN109026723A (en) * | 2018-08-30 | 2018-12-18 | 中山市创星电器有限公司 | A kind of crossing current pump of adjustable water discharging direction |
| CN109210012A (en) * | 2018-09-30 | 2019-01-15 | 武汉格瑞拓机械有限公司 | A kind of symmetric double crank space connecting-rod is used for radially-arranged multi-axis turning mechanism |
| CN109356873A (en) * | 2018-09-30 | 2019-02-19 | 武汉格瑞拓机械有限公司 | A kind of long short pitch chain-drive multi-axis turning mechanism |
| CN110067778A (en) * | 2019-06-06 | 2019-07-30 | 安徽虎渡科达流体机械有限公司 | A kind of adjustable diffuser and its refrigeration compressor |
| CN110067778B (en) * | 2019-06-06 | 2023-12-15 | 宁波虎渡能源科技有限公司 | Adjustable diffuser and refrigeration compressor thereof |
| CN114109915A (en) * | 2020-08-31 | 2022-03-01 | 复盛股份有限公司 | Air flow regulating device of fluid machinery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110831 |