Large-scale vertical axial-flow pump water guide bearing circulating water system
阅读说明：本技术 大型立式轴流泵水导轴承循环水系统 (Large-scale vertical axial-flow pump water guide bearing circulating water system ) 是由 胡大明 钱程 马东亮 方国材 李盼盼 赵永刚 彭光华 查松山 欧勇 鲍士剑 于 2019-11-06 设计创作，主要内容包括：本发明涉及一种大型立式轴流泵水导轴承循环水系统,包括导叶体以及水导轴承总成,水导轴承总成包括上水箱、下水箱、水导轴承、进水导管及出水导管,水导轴承、上水箱、下水箱分别套设在轴流泵内的主轴上,且水导轴承封装在上水箱和下水箱之间,上水箱上开设有进水孔,进水导管一端与进水孔连接,另一端延伸至导叶体外,下水箱上开设有出水孔,出水导管一端与出水孔连接,另一端延伸至导叶体外。该大型立式轴流泵水导轴承自动循环水系统,造价低、性能优良、运行平稳、安全可靠,可广泛应用于大型水利项目中的立式轴流泵,具有很好的经济效益和社会效益。(The invention relates to a large-scale vertical axial-flow pump water guide bearing circulating water system, which comprises a guide vane body and a water guide bearing assembly, wherein the water guide bearing assembly comprises an upper water tank, a lower water tank, a water guide bearing, a water inlet guide pipe and a water outlet guide pipe, the water guide bearing, the upper water tank and the lower water tank are respectively sleeved on a main shaft in an axial-flow pump, the water guide bearing is encapsulated between the upper water tank and the lower water tank, the upper water tank is provided with a water inlet, one end of the water inlet guide pipe is connected with the water inlet, the other end of the water inlet guide pipe extends out of a guide vane body, the lower water tank is provided with a water outlet, one end of the water. The automatic circulating water system of the water guide bearing of the large vertical axial flow pump has the advantages of low manufacturing cost, excellent performance, stable operation, safety and reliability, can be widely applied to vertical axial flow pumps in large water conservancy projects, and has good economic and social benefits.)
1. The utility model provides a large-scale vertical axial compressor pump water guide bearing circulating water system, is including setting up at this internal guide vane body of axial compressor pump and setting at the internal water guide bearing assembly of stator, its characterized in that: the water guide bearing assembly comprises an upper water tank, a lower water tank, a water guide bearing, a water inlet guide pipe and a water outlet guide pipe, wherein the water guide bearing, the upper water tank and the lower water tank are respectively sleeved on a main shaft in the axial-flow pump, the water guide bearing is packaged between the upper water tank and the lower water tank, a water inlet is formed in the upper water tank, one end of the water inlet guide pipe is connected with the water inlet, the other end of the water inlet guide pipe extends out of the guide vane, a water outlet hole is formed in the lower water tank, one end of the water outlet guide pipe is connected with the water outlet hole, and the.
2. The large-scale vertical axial-flow pump water guide bearing circulating water system of claim 1, characterized in that: and sealing elements are arranged among the upper water tank, the lower water tank and the main shaft.
3. The large-scale vertical axial-flow pump water guide bearing circulating water system of claim 1, characterized in that: the water inlet guide pipe and the water outlet guide pipe are cast on the guide vane of the guide vane body.
Technical Field
The invention relates to the field of hydraulic engineering pump stations, in particular to a large vertical axial-flow pump water guide bearing circulating water system.
Background
The large vertical axial-flow pump is widely applied to large water conservancy drainage, water supply and water transfer projects, is closely related to the national civilization, and is of great importance in safe and stable operation. The material of the water guide bearing used for the vertical axial-flow pump is generally high molecular composite material such as sialon, sialon and the like. The materials need to be flushed with water for circulating water, so that the stable operation of the unit can be ensured. The cold water lubrication of the traditional water guide bearing has the following defects: the traditional water guide bearing is characterized in that a polymer composite water guide bearing is naturally soaked in conveyed water; the water delivered by the vertical axial flow pump is generally water containing much silt, impurities and discarded minerals, and in the operation process of the pump, the water guide bearing of the vertical axial flow pump is extremely easy to damage the water guide bearing made of the high polymer composite material under the abrasion and corrosion of the silt and the impurities, so that great potential safety hazards exist; if the mode of lubricating the water guide bearing by adopting the external water source is adopted, the water source which is consumed by lubrication needs to be supplemented by a stable water source, so that the waste of the water source is caused, the supply of the water source which meets the requirement is difficult to realize under many conditions, and great potential safety hazards are brought to the operation of the unit.
Disclosure of Invention
The invention aims to provide a large-scale vertical axial flow pump water guide bearing circulating water system, which solves the problems of poor circulating water effect, quick abrasion and short service life of a large-scale vertical axial flow pump water guide bearing, ensures the safe and reliable use of the large-scale vertical axial flow pump water guide bearing, and prolongs the service life of the water guide bearing.
The invention is realized by the following technical scheme: the utility model provides a large-scale vertical axial-flow pump water guide bearing circulating water system, includes the axial-flow pump body, sets up at this internal guide vane body of axial-flow pump and sets up the water guide bearing assembly in the guide vane, water guide bearing assembly includes upper water tank, lower water tank, water guide bearing, water inlet pipe and play water pipe, water guide bearing, upper water tank, lower water tank overlap respectively on the main shaft in the axial-flow pump, and water guide bearing encapsulates between upper water tank and lower water tank, the inlet opening has been seted up on the upper water tank, inlet pipe one end is connected with the inlet opening, and the other end extends to outside the guide vane, the apopore has been seted up on the lower water tank, it is connected with the apopore to go out water pipe one end, and the other end extends to outside the guide.
In order to avoid water guide bearing and external transport water contact, ensure that polymer composite material water guide bearing is not damaged by silt, impurity wearing and tearing, improve water guide bearing's circulating water effect and wear-resisting life, be provided with the sealing member between upper water tank, lower water tank and the main shaft.
In order to prevent the conveying water of the pump from impacting the hose, the water inlet conduit and the water outlet conduit are cast on the guide vane of the guide vane body.
The invention has the beneficial effects that: the automatic circulating water system of the water guide bearing of the large vertical axial flow pump has the advantages of low manufacturing cost, excellent performance, stable operation, safety and reliability, can be widely applied to vertical axial flow pumps in large water conservancy projects, and has good economic and social benefits; the abrasion corrosion of silt, impurities and waste minerals in the conveyed water to the water guide bearing made of the high polymer composite material is fundamentally avoided, the service life of the water guide bearing is prolonged, and the potential safety hazard caused by the failure of the water guide bearing is avoided; the circulating water effect of the macromolecular composite material water guide bearing of the large-scale vertical axial-flow pump is fundamentally improved.
Drawings
FIG. 1 is a schematic structural diagram of a water guide bearing circulating water system of a large vertical axial-flow pump according to the present invention;
the water-saving device comprises a
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention more readily understood by those skilled in the art, and thus will more clearly and distinctly define the scope of the invention.
As shown in fig. 1, a large-scale vertical axial-flow pump water guide bearing circulating water system includes an axial-flow pump body, a guide vane body 5 arranged in the axial-flow pump body, and a water guide bearing assembly arranged in the guide vane body 5, wherein the water guide bearing assembly includes an upper water tank 6, a lower water tank 2, a water guide bearing 4, a water inlet conduit 7 and a water outlet conduit 3, the water guide bearing 4, the upper water tank 6 and the lower water tank 2 are respectively sleeved on a main shaft in the axial-flow pump, the water guide bearing 4 is encapsulated between the upper water tank 6 and the lower water tank 2, the upper water tank 6 is provided with a water inlet, one end (right end) of the water inlet conduit 7 is connected with the water inlet, the other end (left end) extends out of the guide vane body 5, the lower water tank 2 is provided with a water outlet, one end (right end) of the water outlet conduit 3 is connected with the water outlet, and the other end (left end) extends.
Circulating water is introduced into the cavity of the water tank, the water guide bearing 4 is flushed with circulating water, and then the water guide pipe 3 is connected with a water outlet hole on the lower water tank 2, so that the circulating water in the cavity of the lower water tank 2 is led out and flows back to the circulating water system. The water inlet conduit 7 and the water outlet conduit 3 are cast on the inner side of the guide vane 8 of the guide vane body 5, so that the conveying water of the pump is prevented from impacting the hose. The upper water cavity and the lower water cavity are sealed by the sealing
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "disposed," "provided," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "side", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Finally, it should be noted that: the above-mentioned embodiments are merely specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.
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