Energy-saving boiler forced and induced draft fan series model
A fan and boiler technology, applied in the direction of mechanical equipment, machines/engines, liquid fuel engines, etc., can solve the problems of high motor power, lost bidding opportunities, low maximum efficiency, etc., and achieve the effect of convenient processing and prolonging the service life
Active Publication Date: 2014-04-02
沈阳鼓风机研究所(有限公司)
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Sometimes, although the flow pressure of the fan can be selected, but because it is not in the high-efficiency area, or the maximum efficiency is not high, the power of the selected motor is very large, and it cannot compete with other bidding units, thus losing the opportunity to bid
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0031] Boiler induced energy-saving fan series model (No. 8 model), including casing 1, impeller 2, air inlet 3 and transmission group 4.
[0032] The transmission group includes a main shaft, a bearing box, etc., which are known technologies.
[0033] The impeller is mainly composed of 16 rearward plate-shaped blades 5, an arc-shaped wheel cover 6, a flat-plate wheel disc 7 and a hub 8. The 16 rearward plate-shaped blades 5 are evenly distributed in the circumferential direction, and are welded between the arc-shaped wheel cover 6 and the flat-shaped wheel disc 7 and assembled with the hub 8.
[0034] Main features of the flow section:
[0035] The blade outlet diameter of the impeller 2 is 800mm, the inlet diameter is 575.5mm, the width is 229mm, the outlet width is 179mm, and the blade outlet angle is 36°.
[0036] The air inlet 3 has a diameter of 800 mm and a width of 307.3 mm.
[0037] The casing 1 is a volute casing with a width of 520 mm, the outlet center of the casing 1 to the...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
An energy-saving boiler forced and induced draft fan series model comprises a housing, an impeller, an air inlet and a drive set, and is characterized in that the impeller comprises sixteen blades, an impeller cover, an impeller disk and an impeller hub. The sixteen backward plate-like blades are circumferentially and evenly distributed, and are welded between the cambered impeller cover and the flat impeller disk, which are mounted on the impeller hub. The housing is a volute formed by welded plates. The air inlet is of a welded structure, and the profile of the air inlet is shaped like a conical arc which is axially converged. The invention solves the problem that the abrasion of the blades leads to the vibration of a rotor, thus prolonging the service life of the impeller. If a 4-73 (airfoil type) blade fan used in the field needs to be altered, the housing does not need to be replaced, and under the premise that the foundation and the inlet connector and the outlet connector of the fan are not changed, only the impeller and the air inlet need to be replaced. The model is highly efficient, and the maximum internal efficiency is 87.06 percent, which is equal to the maximum efficiency of the airfoil type blades. The performance of the model can replace the performance of the airfoil type blades.
Description
Technical field [0001] The invention relates to a fan, in particular to a series model of a 4-73 (plate-shaped blade) boiler induced energy-saving fan. Background technique [0002] At present, most of the fans sold in the domestic market are products developed in the 1960s and 1970s, such as 4-73, 4-72, 9-19, 9-26, 5-48, 6-48, T4-72 and other series products. It is still widely used in various fields. In recent years, some companies have been far from meeting the needs of the growing market by cooperating with universities and colleges or introducing and independently developing some new products. There is still great potential for the performance of fans in certain fields. In the face of severe competition in the wind turbine market, only by continuously improving the technical level of wind turbines can they be competitive. The aerodynamic performance of the fan is its most important part. No matter how good the structure of a fan is, no matter how good its appearance is, a...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/28F04D29/42
Inventor 陈凤义朱之墀梁德春李嵩朱艳丽刘沪红王延
Owner 沈阳鼓风机研究所(有限公司)