CN214499462U - High-pressure nitrogen multistage centrifugal blower - Google Patents
High-pressure nitrogen multistage centrifugal blower Download PDFInfo
- Publication number
- CN214499462U CN214499462U CN202023224311.6U CN202023224311U CN214499462U CN 214499462 U CN214499462 U CN 214499462U CN 202023224311 U CN202023224311 U CN 202023224311U CN 214499462 U CN214499462 U CN 214499462U
- Authority
- CN
- China
- Prior art keywords
- sealing
- main shaft
- centrifugal blower
- sleeve
- outer sleeve
- 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
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a high-pressure nitrogen multistage centrifugal blower, which comprises a main shaft and a fan component arranged on the main shaft; sealing assemblies are respectively arranged between the two ends of the fan assembly and the main shaft; the sealing assembly comprises a sealing inner sleeve and a sealing outer sleeve, the sealing inner sleeve is arranged on the main shaft in a sleeved mode, the sealing outer sleeve is arranged on the sealing inner sleeve, a plurality of carbon ring sealing pieces are arranged between the sealing inner sleeve and the sealing outer sleeve, an inflation channel is arranged on the sealing outer sleeve and close to one side of the fan assembly, a gas collecting channel is arranged on the sealing outer sleeve and far away from one side of the fan assembly, and the inflation channel and the gas collecting channel are communicated with a sealing gap between the sealing outer sleeve and the sealing inner sleeve. Adopt the sealed mode with nitrogen gas seal of carbocycle at fan subassembly both ends, can guarantee the good sealing performance of operation under high temperature environment, overall structure is simple, and installation, maintenance are convenient, have fine stability and reliability.
Description
Technical Field
The utility model relates to a fan technical field, in particular to multistage centrifugal air-blower of high pressure nitrogen gas.
Background
In the technical field of high-temperature centrifugal fans, the working temperature of the fan is usually about 300 ℃, for example, the working temperature of a high-temperature fan in a denitration system of a coal-fired power plant is 300-350 ℃, but the high-temperature fan is difficult to be suitable for higher working temperature. In the domestic fan industry, the working temperature is 650 ℃, the pressure reaches 10kPa and above, and the air quantity is 1500Nm3The application requirements of the low-flow high-pressure ultrahigh-temperature high-pressure fan with high pressure below/h are more and more, but certain problems still exist in the aspects of sealing performance and high-temperature environment use of the multistage centrifugal blower, and the use requirements cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the above-mentioned technical problem who exists among the prior art, provide a multistage centrifugal blower of high pressure nitrogen gas, solve the sealed problem that uses under the air-blower high temperature condition.
In order to solve the technical problem, the utility model discloses a technical scheme as follows:
a high-pressure nitrogen multistage centrifugal blower comprises a main shaft and a fan assembly arranged on the main shaft;
sealing assemblies are respectively arranged between the two ends of the fan assembly and the main shaft;
the sealing assembly comprises a sealing inner sleeve and a sealing outer sleeve, the sealing inner sleeve is arranged on the main shaft in a sleeved mode, the sealing outer sleeve is arranged on the sealing inner sleeve, a plurality of carbon ring sealing pieces are arranged between the sealing inner sleeve and the sealing outer sleeve, an inflation channel is arranged on the sealing outer sleeve and close to one side of the fan assembly, a gas collecting channel is arranged on the sealing outer sleeve and far away from one side of the fan assembly, and the inflation channel and the gas collecting channel are communicated with a sealing gap between the sealing outer sleeve and the sealing inner sleeve.
In the above technical solution, further, the inflation channel and the gas collection channel are disposed between the carbon ring seals.
Among the above-mentioned technical scheme, further, set up a plurality of annular seal grooves along its axial on the seal cover, the carbocycle sealing member corresponds the setting in annular seal groove.
In the above technical solution, further, a gap between the carbon ring seal and the inner seal sleeve is 0.05-0.1 mm.
In the above technical solution, further, the fan assembly includes a casing assembly and an impeller assembly disposed in the casing assembly;
the casing subassembly includes left casing, right casing, first separator and second separator, first separator, second separator set up in the cavity between left casing and the right casing, separate the cavity between left casing and the right casing for a plurality of backward flow cavities.
In the above technical scheme, further, the impeller assembly includes a plurality of impellers sleeved on the main shaft, and the impellers are respectively arranged in the backflow chamber.
In the above technical solution, further, the first isolation member is sleeved on the main shaft, and the first isolation member is disposed in the left housing.
In the above technical solution, further, the second isolation member is a V-shaped bracket cross-sectional structure, and includes a first annular support plate and a second annular support plate, an outer edge of the first annular support plate is clamped on the left casing, and an outer edge of the second annular support plate is clamped on the right casing.
Among the above-mentioned technical scheme, further, be located impeller one end is provided with the water conservancy diversion axle sleeve respectively, the water conservancy diversion axle sleeve cover is established on the main shaft, water conservancy diversion axle sleeve outer fringe face be with impeller installation department complex arcwall face.
The utility model discloses the beneficial effect who has:
1) this air-blower adopts the sealed mode with nitrogen gas of carbocycle at fan subassembly both ends, can guarantee the good sealing performance of operation under high temperature environment, and overall structure is simple, and installation, maintenance are convenient, have fine stability and reliability.
2) Compared with the existing sealing mode adopting a polytetrafluoroethylene piston ring, the sealing effect is better, and zero leakage of internal media can be realized.
3) This fan subassembly structure in air-blower sets up rationally, mutually supports between casing subassembly and the impeller subassembly, when convenient assembly, installation, can effectively improve the operating efficiency and the stability of fan.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a left side view of the structure of the embodiment of the present invention.
Fig. 3 is a partial schematic view of fig. 1 at C.
Fig. 4 is a partial schematic view of fig. 1 at D.
In the figure: 100. a main shaft;
200. the gas-filled gas-;
301. a left housing, 302, a right housing, 303, a first partition, 304, a second partition, 341, a first annular support, 342, a second annular support, 305, a reflow chamber;
400. an impeller 401, an impeller mounting portion;
500. and a flow guide shaft sleeve.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, 2 and 3, the centrifugal blower in the present embodiment includes a main shaft 100 and a blower assembly provided on the main shaft.
A plurality of annular sealing grooves 204 are arranged on the sealing outer sleeve 201 along the axial direction of the sealing outer sleeve, and the carbon ring sealing member 203 is correspondingly arranged in the annular sealing grooves 204 so as to facilitate the connection and arrangement of the carbon ring sealing member on the sealing outer sleeve. At the moment, the gap between the carbon ring sealing element 203 and the sealing inner sleeve 202 can reach 0.05-0.1mm, so that the carbon ring sealing element can be better matched with the sealing inner sleeve, the sealing performance of the sealing assembly is better improved, and zero leakage of media in the fan is realized.
An inflation channel 205 is arranged on one side, close to the fan assembly, of the sealing outer sleeve 201, a gas collection channel 206 is arranged on one side, far away from the fan assembly, of the sealing outer sleeve 201, and the inflation channel 205 and the gas collection channel 206 penetrate through a sealing gap between the sealing outer sleeve and the sealing inner sleeve. Through setting up gas charging channel and gas collection passageway, let in nitrogen gas in seal assembly, carry out further sealed to fan subassembly both ends, realize the zero leakage of fan inner medium.
Preferably, the inflation channel 205 and the gas collection channel 206 are respectively disposed between the carbon ring sealing members 203 in this embodiment, as shown in fig. 3, two carbon ring sealing members 203 are respectively disposed on two sides of the inflation channel 205, one carbon ring sealing member 203 is disposed on one side of the gas collection channel 206, and two carbon ring sealing members 203 are disposed on the other side of the gas collection channel, so that a good fit can be formed among the inflation channel, the gas collection channel and the carbon ring sealing members, and the sealing effect of the sealing assembly is improved.
Referring to fig. 1, the fan assembly in this embodiment includes a housing assembly and an impeller assembly disposed within the housing assembly.
The cabinet assembly comprises a left cabinet 301, a right cabinet 302, a first partition 303 and a second partition 304, wherein the first partition 303 and the second partition 304 are arranged in a chamber between the left cabinet and the right cabinet to divide the chamber between the left cabinet and the right cabinet into a plurality of backflow chambers 305. The first isolation member 303 is sleeved on the main shaft 100, and the first isolation member 303 is arranged in the left housing 301. As shown in fig. 4, the second spacer 304 is a V-shaped bracket cross-sectional structure, and includes a first annular support 341 and a second annular support 342, an outer edge of the first annular support 341 is clamped on the left housing 301, and an outer edge of the second annular support 341 is clamped on the right housing 302; the casing assembly has good overall performance and is convenient to install, the impeller is convenient to install in the casing assembly, and the running stability of the impeller in the casing assembly is guaranteed.
The impeller assembly comprises a plurality of impellers 400 sleeved on the main shaft, and the impellers 400 are respectively arranged in the backflow chamber 305 to form a multi-stage fan structure.
Be located impeller 400 one end is provided with water conservancy diversion axle sleeve 500 respectively, water conservancy diversion axle sleeve 500 cover is established on main shaft 100, water conservancy diversion axle sleeve 500 outer fringe face be with impeller installation department 401 complex arcwall face, make the inherent each impeller air intake department of backward flow cavity form curved water conservancy diversion face to improve the operating efficiency of fan.
The present invention is not limited to the above description and drawings, but should be understood as being illustrative and not restrictive, and the technical features can be replaced and modified without creative efforts by those skilled in the art according to the technical content disclosed, all falling within the scope of the present invention.
Claims (9)
1. A high-pressure nitrogen multistage centrifugal blower is characterized by comprising a main shaft and a fan assembly arranged on the main shaft;
sealing assemblies are respectively arranged between the two ends of the fan assembly and the main shaft;
the sealing assembly comprises a sealing inner sleeve and a sealing outer sleeve, the sealing inner sleeve is arranged on the main shaft in a sleeved mode, the sealing outer sleeve is arranged on the sealing inner sleeve, a plurality of carbon ring sealing pieces are arranged between the sealing inner sleeve and the sealing outer sleeve, an inflation channel is arranged on the sealing outer sleeve and close to one side of the fan assembly, a gas collecting channel is arranged on the sealing outer sleeve and far away from one side of the fan assembly, and the inflation channel and the gas collecting channel are communicated with a sealing gap between the sealing outer sleeve and the sealing inner sleeve.
2. The high pressure nitrogen multistage centrifugal blower of claim 1, wherein said plenum channel, gas collection channel are disposed between carbon ring seals.
3. The high-pressure nitrogen multistage centrifugal blower according to claim 1 or 2, wherein a plurality of annular seal grooves are formed in the seal housing in the axial direction of the seal housing, and the carbon ring seals are correspondingly arranged in the annular seal grooves.
4. The high pressure nitrogen multistage centrifugal blower of claim 3, wherein the gap between the carbon ring seal and the seal inner sleeve is 0.05-0.1 mm.
5. The high pressure nitrogen multi-stage centrifugal blower of claim 1, wherein the blower assembly comprises a casing assembly and an impeller assembly disposed within the casing assembly;
the casing subassembly includes left casing, right casing, first separator and second separator, first separator, second separator set up in the cavity between left casing and the right casing, separate the cavity between left casing and the right casing for a plurality of backward flow cavities.
6. The high-pressure nitrogen multistage centrifugal blower according to claim 5, wherein the impeller assembly includes a plurality of impellers fitted around the main shaft, the impellers being respectively disposed in the return chambers.
7. The high pressure nitrogen multi-stage centrifugal blower of claim 5, wherein the first spacer is sleeved on the main shaft, the first spacer being disposed within the left casing.
8. The multistage centrifugal blower according to claim 5, wherein the second partition has a V-shaped cross-sectional bracket structure, and includes a first annular support plate and a second annular support plate, the first annular support plate being clamped at an outer edge thereof to the left casing, and the second annular support plate being clamped at an outer edge thereof to the right casing.
9. The high-pressure nitrogen multistage centrifugal blower according to claim 6, wherein a guide shaft sleeve is respectively disposed at one end of each impeller, the guide shaft sleeves the main shaft, and an outer edge surface of each guide shaft sleeve is an arc surface matched with the impeller mounting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023224311.6U CN214499462U (en) | 2020-12-28 | 2020-12-28 | High-pressure nitrogen multistage centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023224311.6U CN214499462U (en) | 2020-12-28 | 2020-12-28 | High-pressure nitrogen multistage centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214499462U true CN214499462U (en) | 2021-10-26 |
Family
ID=78210987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023224311.6U Active CN214499462U (en) | 2020-12-28 | 2020-12-28 | High-pressure nitrogen multistage centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214499462U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198340A (en) * | 2021-11-24 | 2022-03-18 | 华能重庆两江燃机发电有限责任公司 | SCR dilution fan that can start fast |
-
2020
- 2020-12-28 CN CN202023224311.6U patent/CN214499462U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198340A (en) * | 2021-11-24 | 2022-03-18 | 华能重庆两江燃机发电有限责任公司 | SCR dilution fan that can start fast |
| CN114198340B (en) * | 2021-11-24 | 2023-01-20 | 华能重庆两江燃机发电有限责任公司 | SCR dilution fan that can start fast |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214499462U (en) | High-pressure nitrogen multistage centrifugal blower | |
| CN2913692Y (en) | Centrifugal pump | |
| CN206738156U (en) | A kind of new No leakage roots blower sealing device | |
| CN210889438U (en) | Combined dry gas sealing structure suitable for radial-flow impeller | |
| CN201902331U (en) | Static pressure type dry air sealing device for screw compressor | |
| CN209959540U (en) | Axial thrust control device of multistage centrifugal blower | |
| CN203214404U (en) | Single-case symmetrical radially-split multistage centrifugal pump | |
| CN111911633B (en) | Novel self-balancing type active leakage-suppressing labyrinth seal device | |
| CN113294359B (en) | High-performance single-side double-impeller magnetic levitation high-speed direct-drive turbine compressor and working mechanism | |
| CN212429288U (en) | High-pressure compressor wheel disc sealing structure | |
| CN207975012U (en) | A kind of water pump front-end bearing pedestal | |
| CN203584874U (en) | Multiple-stage centrifugal pump effectively reducing mechanical seal balance chamber flow loss | |
| CN202326267U (en) | Two-stage chemical engineering process pump | |
| CN215830749U (en) | High-performance unilateral double-impeller magnetic levitation high-speed direct-drive turbine compressor structure | |
| CN214499463U (en) | Small-flow high-pressure analysis gas centrifugal fan | |
| CN219344985U (en) | Multistage pump interstage leakage reducing structure and multistage pump | |
| RU219570U1 (en) | CENTRIFUGAL COMPRESSOR | |
| CN212454838U (en) | Multistage centrifugal pump | |
| CN217502072U (en) | Sealing and isolating structure for supporting compression expander by electromagnetic bearing | |
| CN212775568U (en) | Sealing device suitable for uneven surface | |
| CN213360550U (en) | Novel sealing device and centrifugal compressor with same | |
| CN219101683U (en) | Electric fan and terminal equipment | |
| CN217380931U (en) | Dry-wet dual-purpose electric fan | |
| CN219691802U (en) | Centrifugal air compressor sealing structure capable of reducing axial force | |
| CN219975345U (en) | Sealing component and fluid device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220106 Address after: 610499 No. 18, Xingrui Road, huaikou Town, Jintang County, Chengdu City, Sichuan Province (Jintang County Industrial Development Zone) Patentee after: Sichuan Sanwei Fan Manufacturing Co.,Ltd. Address before: 610100 Bai He Zhen Chang Yuan Cun, Longquanyi District, Chengdu City, Sichuan Province Patentee before: SICHUAN SANWEI BLOWER LTD. |
|
| TR01 | Transfer of patent right |