CN2756873Y - Four grade two section double inlet pre rotary device centrafugal blower - Google Patents
Four grade two section double inlet pre rotary device centrafugal blower Download PDFInfo
- Publication number
- CN2756873Y CN2756873Y CN 200420086298 CN200420086298U CN2756873Y CN 2756873 Y CN2756873 Y CN 2756873Y CN 200420086298 CN200420086298 CN 200420086298 CN 200420086298 U CN200420086298 U CN 200420086298U CN 2756873 Y CN2756873 Y CN 2756873Y
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- impeller
- segment structure
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- main shaft
- stage
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Abstract
The utility model relates to a four grade two section double inlet pre-rotary device centrifugal blower, which comprises a rotor and stators, wherein the rotor comprises a main shaft; a first segment structure is composed of a first stage impeller, a second stage impeller and the corresponding stators which are arranged on the main shaft; a second segment structure is composed of a third stage impeller, a fourth stage impeller and the corresponding stators which are arranged on the main shaft, wherein the first segment structure and the second segment structure are arranged back to back; an inlet pre-rotary device is respectively arranged in front of air intakes of the first stage impeller and the third stage impeller; the gas is conveyed to a blast furnace after carried out with the two-stage compression after cooled by an interstage air cooler and carried out with the continuous two-stage compression of the first segment. Due to the compressed gas passes the interstage cooler, which causes the temperature of the gas entering the second segment to descend, therefore the compressibility of the gas is improved and the compression efficiency of the complete machine is enhanced, and moreover, the structure of the double inlet pre-rotary device causes the operability of the machine set to be improved and the safety to be enhanced.
Description
Technical field
The utility model relates to a kind of centrifugal blower, relates in particular to the double feed inlet prerotator centrifugal blower of two sections of a kind of level Four.
Background technique
It uses more and more widely centrifugal blower as the ventilation apparatus of industries such as metallurgy, petrochemical industry, pharmacy, large centrifugal blower particularly, the pressure ratio and the flow that require are more and more higher, but because the maximization of equipment, simply pursuit flow and pressure ratio, make that the efficient of blower is not very high, in order to raise the efficiency, widen the stability and high efficiency working zone of blower, prior art is that the intake grill at compressor impeller is provided with the inlet whirl device, enter the inlet absolute air flow angle of impeller air-flow in order to adjustment, thereby reach the effect of adjusting complete machine flow and pressure.But present technology is just installed the import prerotator before first order impeller, centrifugal blower is accompanied by the rising of gas temperature as turbo-compressor in the compression process simultaneously, makes energy loss, and the compression performance variation, and efficient reduces.
Summary of the invention
In order to solve centrifugal blower its compression performance variation, inefficient problem when high pressure ratio and the flow, the purpose of this utility model provides the double feed inlet prerotator centrifugal blower of two sections of a kind of level Four, the efficient of centrifugal blower is improved, has widened the stability and high efficiency working zone of blower.
The technological scheme that the utility model adopted is: two sections double feed inlet prerotators of level Four centrifugal blower, comprise rotor and stator, rotor comprises main shaft, first order impeller is installed on the main shaft, second level impeller, third level impeller, fourth stage impeller, the inlet whirl device is installed before the intake grill of first order impeller, first order impeller of installing on the main shaft and second level impeller match with corresponding stator and form the I segment structure, third level impeller of installing on the main shaft and fourth stage impeller match with corresponding stator and form the II segment structure, I segment structure and II segment structure are provided with back-to-back, the I segment structure is provided with I segment structure intake grill and I segment structure exhaust outlet, the II segment structure is provided with II segment structure intake grill and II segment structure exhaust outlet, and the second inlet whirl device is installed between the intake grill of II segment structure intake grill and third level impeller.
The preferable technological scheme of the utility model is that sealing can also be set between I segment structure and II segment structure; Be provided with sealing between first order impeller and the second level impeller, be provided with sealing between fourth stage impeller and the third level impeller.
The beneficial effects of the utility model are: when system works under the situation of higher pressure ratio, the level Four two-stage structure that the utility model adopts, can between two sections, air-cooler be installed, cool off by air-cooler after making gas through the continuous two stage compression of I section, after the continuous two stage compression of II section, be transported to blast furnace again, because pressurized gas has passed through intersegmental cooler, the gas temperature that enters the II section is descended, improved its compressibility, improved the compression efficiency of complete machine, energy saving.The double feed inlet prerotator structure that the utility model adopts is widened 50%-115% with the efficient stable working zone of the 75%-105% of single inlet whirl device, and the operability of unit is improved, and Security improves.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the schematic representation that impeller, inlet whirl device are provided with on main shaft.
Among the figure, 1 rotor, 2 stators, 3 first order impellers, 4 second level impellers, 5 third level impellers, 6 fourth stage impellers, 7 I segment structure intake grills, 8 II segment structure intake grills, 9 inlet whirl devices, 10 second inlet whirl devices, 11 I segment structure exhaust outlets, 12 II segment structure exhaust outlets, 13 main shafts.
Embodiment
Below in conjunction with accompanying drawing structure of the present utility model and working principle are done a nearly step explanation.
Referring to Fig. 1, Fig. 2, two sections double feed inlet prerotators of level Four centrifugal blower, comprise rotor 1 and stator 2, rotor 1 comprises main shaft 13, first order impeller 3 is installed on the main shaft 13, second level impeller 4, third level impeller 5, fourth stage impeller 6, inlet whirl device 9 is installed before the intake grill of first order impeller 3, first order impeller of installing on the main shaft 13 3 and second level impeller 4 match with corresponding stator 2 and form the I segment structure, third level impeller of installing on the main shaft 13 5 and fourth stage impeller 6 match with corresponding stator 2 and form the II segment structure, I segment structure and II segment structure are provided with back-to-back, just the position of each impeller on rotor 1 is followed successively by first order impeller 3, second level impeller 4, fourth stage impeller 6, third level impeller 5, relative from first order impeller 3 gas flow direction vertically that enters and the gas that enters from third level impeller 5 flow direction vertically, the I segment structure is provided with I segment structure intake grill 7 and I segment structure exhaust outlet 11, the II segment structure is provided with II segment structure intake grill 8 and II segment structure exhaust outlet 12, the second inlet whirl device 10 is installed between the intake grill of II segment structure intake grill 8 and third level impeller 5, the second inlet whirl device 10 is rigidly connected by static element on it and stator 2, the blade pass of the second inlet whirl device 10 is crossed movement parts and is linked to each other with driving mechanism, driving mechanism links to each other with angle stroke motor, the rotation of angle stroke motor makes blade rotation by the movement parts that driving mechanism drives the second inlet whirl device 10, be provided with sealing between I segment structure and the II segment structure, be provided with sealing between first order impeller 3 and the second level impeller 4, be provided with sealing between fourth stage impeller 6 and the third level impeller 5, to reduce compressed-air actuated leakage.
The air that comes out from air intake pipe, enter from I segment structure intake grill 7, enter the intake grill of first order impeller 3 through inlet whirl device 9, successively through first order impeller 3, after impeller 4 two-stages in the second level are compressed continuously, flow out blower through I segment structure exhaust outlet 11, because the two-part structure that adopts, can between two sections, air-cooler be installed, from air-cooler cooling between the pressurized gas approach section of I segment structure exhaust outlet 11 outflows, pressurized gas through cooling enters from II segment structure intake grill 8, pour the intake grill of third level impeller 5 into through the second inlet whirl device 10, again successively through third level impeller 5, fourth stage impeller 6 continuous two stage compression, the pressurized gas after the compression flow out blower from II segment structure exhaust outlet 12 sends into blast furnace.
When the airflow pressure that needs when system rises or descends, the suitable angle of just prewhirling that reduces or increase the inlet whirl device 9 and the second inlet whirl device 10 synchronously, angle variation adjustment by the prerotator blade enters the inlet absolute air flow angle of impeller, thereby reaches the effect of adjusting unit flowmeter pressure.
Claims (3)
1. two sections double feed inlet prerotators of level Four centrifugal blower, comprise rotor (1) and stator (2), rotor (1) comprises main shaft (13), main shaft (13) is gone up first order impeller (3) is installed, second level impeller (4), third level impeller (5), fourth stage impeller (6), inlet whirl device (9) is installed before the intake grill of first order impeller (3), it is characterized in that, first order impeller (3) that said main shaft (13) is upward installed and second level impeller (4) match with corresponding stator (2) and form the I segment structure, third level impeller (5) that main shaft (13) is upward installed and fourth stage impeller (6) match with corresponding stator (2) and form the II segment structure, I segment structure and II segment structure are provided with back-to-back, the I segment structure is provided with I segment structure intake grill (7) and I segment structure exhaust outlet (11), the II segment structure is provided with II segment structure intake grill (8) and II segment structure exhaust outlet (12), and the second inlet whirl device (10) is installed between the intake grill of said II segment structure intake grill (8) and third level impeller (5).
2. two sections double feed inlet prerotators of level Four according to claim 1 centrifugal blower is characterized in that, is provided with sealing between said I segment structure and the II segment structure.
3. two sections double feed inlet prerotators of level Four according to claim 1 and 2 centrifugal blower, it is characterized in that, be provided with sealing between said first order impeller (3) and the second level impeller (4), be provided with sealing between fourth stage impeller (6) and the third level impeller (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420086298 CN2756873Y (en) | 2004-12-02 | 2004-12-02 | Four grade two section double inlet pre rotary device centrafugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420086298 CN2756873Y (en) | 2004-12-02 | 2004-12-02 | Four grade two section double inlet pre rotary device centrafugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2756873Y true CN2756873Y (en) | 2006-02-08 |
Family
ID=35965260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420086298 Expired - Lifetime CN2756873Y (en) | 2004-12-02 | 2004-12-02 | Four grade two section double inlet pre rotary device centrafugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2756873Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619769A (en) * | 2012-04-17 | 2012-08-01 | 江苏乘帆压缩机有限公司 | High-pressure centrifugal fan |
| CN104019040A (en) * | 2014-06-26 | 2014-09-03 | 江苏金通灵流体机械科技股份有限公司 | Double-suction high-pressure ratio steam compressor |
| CN114033553A (en) * | 2021-09-22 | 2022-02-11 | 浙江意动科技股份有限公司 | Turbojet engine rotor transmission shaft and axial locking device thereof |
-
2004
- 2004-12-02 CN CN 200420086298 patent/CN2756873Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619769A (en) * | 2012-04-17 | 2012-08-01 | 江苏乘帆压缩机有限公司 | High-pressure centrifugal fan |
| CN104019040A (en) * | 2014-06-26 | 2014-09-03 | 江苏金通灵流体机械科技股份有限公司 | Double-suction high-pressure ratio steam compressor |
| CN114033553A (en) * | 2021-09-22 | 2022-02-11 | 浙江意动科技股份有限公司 | Turbojet engine rotor transmission shaft and axial locking device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141202 Granted publication date: 20060208 |