CN113482964B - High-temperature hot water circulating pump with guide bearing lubricating and cooling structure - Google Patents
High-temperature hot water circulating pump with guide bearing lubricating and cooling structure Download PDFInfo
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- CN113482964B CN113482964B CN202110968897.7A CN202110968897A CN113482964B CN 113482964 B CN113482964 B CN 113482964B CN 202110968897 A CN202110968897 A CN 202110968897A CN 113482964 B CN113482964 B CN 113482964B
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- cooling
- guide bearing
- pump
- pump cover
- main shaft
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/06—Lubrication
- F04D29/061—Lubrication especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/5886—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling by injection
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a high-temperature hot water circulating pump with a guide bearing lubricating and cooling structure, which relates to the technical field of fluid machinery and comprises the following components: a main shaft; the impeller rear cover plate is arranged on the main shaft; the shaft sleeve is arranged on the main shaft and is positioned at one side of the impeller rear cover plate; the pump cover is arranged on the shaft sleeve, a mixing cavity is formed between the bottom side of the pump cover and the side surface of the impeller rear cover plate, and a high-temperature medium flow passage is formed between the side surface of the pump cover and the side surface of the impeller rear cover plate; the guide bearing is sleeved on the main shaft; the pump body is sleeved on the guide bearing; the mixed liquid channel is arranged on the pump cover; the cooling liquid flow passage is arranged on the pump body. The invention solves the technical problem that the stable operation of the hot water circulating pump is affected by the overhigh temperature of the pumping medium in the prior art.
Description
Technical Field
The invention relates to the technical field of fluid machinery, in particular to a high-temperature hot water circulating pump with a guide bearing lubricating and cooling structure.
Background
High-temperature media can be transported by using a high-temperature hot water circulating pump in the fields of petrochemical power, metallurgical industry and mining, nuclear industry energy and the like.
When the existing circulating pump works, part of high-temperature medium flows into the guide bearing, so that the stability of the rotor and the sealing effect of the sealing part are affected; for example, patent publication number CN103185023B discloses a guide bearing structure of a hot water circulating pump, in which a high-temperature medium flowing out from a gap between a rear cover plate of an impeller and a pump body lubricates the guide bearing, but the stability of a rotor is affected due to higher temperature.
Disclosure of Invention
The invention aims to provide a high-temperature hot water circulating pump with a guide bearing lubricating and cooling structure, which solves the technical problem that the stable operation of the hot water circulating pump is influenced due to the fact that the temperature of a pumping medium is too high in the prior art.
The embodiment of the application discloses take guide bearing lubrication cooling structure's hot water circulation pump includes:
a main shaft;
the impeller rear cover plate is arranged on the main shaft;
the shaft sleeve is arranged on the main shaft and is positioned on one side of the impeller rear cover plate;
the pump cover is arranged on the shaft sleeve, a mixing cavity is formed between the bottom side of the pump cover and the side face of the impeller rear cover plate, a high-temperature medium flow passage is formed between the side face of the pump cover and the side face of the impeller rear cover plate, and the high-temperature medium flow passage is communicated with the mixing cavity;
the guide bearing is sleeved on the main shaft and is positioned at one side of the shaft sleeve, which is far away from the impeller rear cover plate;
the pump body is sleeved on the guide bearing and connected with the pump cover;
the mixed liquid channel is arranged on the impeller rear cover plate, one end of the mixed liquid channel extends into the mixing cavity, and the other end of the mixed liquid channel extends to the end part of the main shaft;
and the cooling liquid flow passage is arranged on the pump body and extends from the outer end surface of the pump body to the mixing cavity.
According to the embodiment of the application, the cooling liquid flow passage is increased, the temperature of the pumped medium is reduced, and the purposes of lubricating the guide bearing and improving the running stability of the high-temperature pump can be achieved.
Based on the above technical solution, the embodiment of the present application may further be modified as follows:
further, the cooling liquid channels are at least four, and the cooling liquid channels are symmetrically distributed about the main shaft.
Further, the number of the mixed liquid channels is at least four, the mixed liquid channels are symmetrically distributed about the main shaft, and the mixed liquid channels have the beneficial effects that the mixed liquid channels can be used for realizing the mixing of a high-temperature medium and cooling liquid, and the temperature of the high-temperature medium is reduced.
Further, the coolant flow channel comprises a guide bearing cooling section and a pump cover cooling section, wherein the guide bearing cooling section is positioned inside the guide bearing to realize cooling of the guide bearing, and the pump cover cooling section is positioned inside the pump cover to realize cooling of the pump cover.
Further, the pump cover cooling section and the high-temperature medium runner exchange heat in a heat convection mode through the pump cover, and the pump cover cooling section and the high-temperature medium runner have the beneficial effects of being capable of playing a role of cooling the pump cover.
Further, the pump cover cooling section is composed of a plurality of vertical cooling sections and a plurality of horizontal cooling sections, and the vertical cooling sections are communicated with the horizontal cooling sections in a staggered manner.
Further, the high-temperature medium runner comprises a plurality of vertical high-temperature sections and a plurality of horizontal high-temperature sections, and the vertical high-temperature sections are communicated with the horizontal high-temperature sections in a staggered manner.
Further, an inlet of the mixed liquid channel communicated with the mixed cavity is circular.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:
1. the coolant liquid flow of this application embodiment is through guide bearing, plays lubricated effect to the guide bearing.
2. Before the high-temperature medium is mixed with the cooling liquid, the high-temperature medium transfers heat to the cooling liquid in a convection heat exchange mode, so that thermal fatigue of a pump cover and a main shaft caused by direct mixing of the high-temperature medium and the cooling liquid is relieved; the mixed liquid flows back into the impeller through the runner.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a hot water circulation pump with a guide bearing lubrication and cooling structure according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of a portion B of a hot water circulation pump with a guide bearing lubrication and cooling structure according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along A-A of FIG. 2;
reference numerals:
1-a main shaft; 2-impeller back cover plate; 3-shaft sleeve; 4-pump cover; 5-a mixing chamber; 6-a high-temperature medium runner; 7-a guide bearing; 8-a pump body; 9-a mixed liquor channel; 10-a cooling liquid flow passage;
1001-a guide bearing cooling section; 1002-pump cover cooling section; 1003-vertical cooling section; 1004-a horizontal cooling section;
6001-horizontal high temperature section; 6002-vertical high temperature section.
Detailed Description
Embodiments of the technical scheme of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and thus are merely examples, and are not intended to limit the scope of the present invention.
It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.
In the description of the present application, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the invention.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The embodiment of the application provides a take guide bearing lubrication cooling structure's hot water circulating pump, has solved among the prior art pumping medium high temperature, influences the technical problem of hot water circulating pump steady operation.
The overall idea of the embodiment of the application is as follows: the pump body is provided with a cooling flow passage, and after the guide bearing is lubricated, the high-temperature medium can be cooled, so that the stable operation of the hot water circulating pump is ensured.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
Examples:
as shown in fig. 1-2, an embodiment of the present application discloses a high-temperature hot water circulating pump with a guide bearing lubrication cooling structure, to complete cooling of a high-temperature medium of the pump, and the specific structure includes:
a main shaft 1, which is a pump body main shaft;
an impeller rear cover plate 2 which is arranged on the main shaft 1 and is used for completing the assembly of the impeller;
a shaft sleeve 3 mounted on the main shaft 1, wherein the shaft sleeve 3 is positioned at one side of the impeller rear cover plate 2, and the shaft sleeve 3 is assembled on the main shaft 1;
a pump cover 4 mounted on the shaft sleeve 3, wherein a mixing cavity 5 is formed between the bottom side of the pump cover 4 and the side surface of the impeller rear cover plate 2, a high-temperature medium flow channel 6 is formed between the side surface of the pump cover 4 and the side surface of the impeller rear cover plate 2, the high-temperature medium flow channel 6 is communicated with the mixing cavity 5, the high-temperature medium flow channel 6 is used for flowing out a medium and flowing into the mixing cavity 5 to finish cooling, and finally, the medium flows out of the mixing cavity 5 to finish treatment;
the guide bearing 7 is sleeved on the main shaft 1, and the guide bearing 7 is positioned at one side of the shaft sleeve 3 away from the impeller rear cover plate 2;
the pump body 8 is sleeved on the guide bearing 7, and the pump body 8 is connected with the pump cover 4;
a mixed liquid channel 9, which is arranged on the impeller rear cover plate 4, wherein one end of the mixed liquid channel 9 extends into the mixed cavity 5, and the other end extends to the end part of the main shaft 1;
the coolant flow channel 10, set up in on the pump body 8, coolant flow channel 10 is followed the outer terminal surface of pump body 8 extends to the mixing chamber 5, and this application embodiment is cooled down the pump body through coolant flow channel 10, mixes simultaneously with high temperature medium, and after mixing, flows to the tip of main shaft 1 through mixed liquid passageway 9, flows back the impeller at last.
In an embodiment, the number of the cooling liquid channels 10 is at least four, and the cooling liquid channels 10 are symmetrically distributed about the spindle 1, wherein the number of the cooling liquid channels 10 is multiple, so that the whole cooling of the pump body can be completed, and the cooling effect is improved.
Wherein, the number of the mixing liquid channels 9 is at least four, and the mixing liquid channels 9 are symmetrically distributed about the main shaft 1, and the mixing liquid channels 9 can improve the flow effect.
In yet another embodiment, the cooling fluid flow channel 10 includes a guide bearing cooling section 1001 and a pump cover cooling section, the guide bearing cooling section 1001 is located inside the guide bearing 7 to realize cooling of the guide bearing 7, the pump cover cooling section 1002 is located inside the pump cover 4 to realize cooling of the pump cover 4, and the cooling fluid flow channel 10 in this embodiment is divided into at least two sections, wherein the guide bearing cooling section 1001 is used for cooling the guide bearing and lubricating the guide bearing to prolong the service life thereof; the pump cover cooling section 1002 is used for cooling the pump cover, and because high-temperature medium flows through the pump cover, the temperature of the pump cover can be increased to influence the tightness of the pump cover, so that the pump cover can be cooled through the pump cover cooling section 1002, and the influence on the sealing due to the fact that the temperature of the pump cover is too high is avoided.
Specifically, the pump cover cooling section 1002 exchanges heat with the high-temperature medium flow passage 6 by way of the pump cover 4 in a heat convection manner, i.e., in such a manner that cooling of the pump cover 4 can be achieved.
In yet another embodiment, the pump cap cooling section 1002 is comprised of a plurality of vertical cooling sections 1003 and a plurality of horizontal cooling sections 1004, the vertical cooling sections 1003 in staggered communication with the horizontal cooling sections 1004; meanwhile, the high temperature medium runner 6 is composed of a plurality of vertical high temperature sections 6001 and a plurality of horizontal high temperature sections 6002, the vertical high temperature sections 6001 are communicated with the horizontal high temperature sections 6002 in a staggered manner, in the embodiment of the application, the pump cover cooling section 1002 is composed of a plurality of horizontal sections and vertical sections, so that S-shaped winding directions, or C-shaped or other multi-winding directions of channels can be formed, heat can be fully exchanged, and the same high temperature medium runner 6 is also the same, so that the pump cover can be guaranteed to be cooled, the high temperature medium can be guaranteed to be cooled, the cooling effect of the pump cover cooling section 1002 and the high temperature medium runner 6 can be further improved, and the longitudinal sections of the pump cover cooling section 1002 and the high temperature medium runner 6 in the embodiment of the application are annular as shown in fig. 3.
Specifically, the inlet of the mixing fluid channel 9 communicating with the mixing chamber 5 is circular.
The working principle of the embodiment of the application is as follows:
the cooling liquid enters from the inlet of the cooling liquid flow channel 10 and flows to the guide bearing 7, so that the normal operation of the guide bearing 7 can be lubricated; after lubricating the guide bearing 7, the cooling liquid flows into the mixing cavity 5 along the cooling liquid flow channel 10;
after the high-temperature medium overflows, the high-temperature medium enters the mixing cavity 5 along the high-temperature medium flow channel 6 to be mixed with the cooling liquid, and then flows back to the impeller through the mixed liquid channel 9;
before the high-temperature medium and the cooling liquid flow into the cavity 5, the high-temperature medium and the cooling liquid exchange heat through the pump cover 4, so that the occurrence of thermal fatigue of the pump cover 4 and the main shaft 1 caused by direct mixing of cold and hot fluid is slowed down.
In the description of the present invention, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.
Claims (4)
1. The utility model provides a take guide bearing lubrication cooling structure's hot water circulating pump which characterized in that includes:
a main shaft;
the impeller rear cover plate is arranged on the main shaft;
the shaft sleeve is arranged on the main shaft and is positioned on one side of the impeller rear cover plate;
the pump cover is arranged on the shaft sleeve, a mixing cavity is formed between the bottom side of the pump cover and the side face of the impeller rear cover plate, a high-temperature medium flow passage is formed between the side face of the pump cover and the side face of the impeller rear cover plate, and the high-temperature medium flow passage is communicated with the mixing cavity;
the guide bearing is sleeved on the main shaft and is positioned at one side of the shaft sleeve, which is far away from the impeller rear cover plate;
the pump body is sleeved on the guide bearing and connected with the pump cover;
the mixed liquid channel is arranged on the impeller rear cover plate, one end of the mixed liquid channel extends into the mixing cavity, and the other end of the mixed liquid channel extends to the end part of the main shaft;
the cooling liquid flow passage is arranged on the pump body and extends from the outer end surface of the pump body to the mixing cavity;
the cooling liquid flow channel comprises a guide bearing cooling section and a pump cover cooling section, wherein the guide bearing cooling section is positioned in the guide bearing to realize cooling of the guide bearing, and the pump cover cooling section is positioned in the pump cover to realize cooling of the pump cover;
the pump cover cooling section and the high-temperature medium flow channel exchange heat in a heat convection mode through the pump cover;
the pump cover cooling section consists of a plurality of vertical cooling sections and a plurality of horizontal cooling sections, and the vertical cooling sections are communicated with the horizontal cooling sections in a staggered manner;
the high-temperature medium flow passage consists of a plurality of vertical high-temperature sections and a plurality of horizontal high-temperature sections, and the vertical high-temperature sections are communicated with the horizontal high-temperature sections in a staggered manner.
2. The high-temperature hot water circulation pump with guide bearing lubrication cooling structure according to claim 1, wherein the number of the coolant flow passages is at least four, and the coolant flow passages are symmetrically distributed about the main shaft.
3. The high-temperature hot water circulation pump with the guide bearing lubricating and cooling structure according to claim 1, wherein at least four mixed liquid channels are provided, and the mixed liquid channels are symmetrically distributed about the main shaft.
4. A high-temperature hot water circulation pump with a guide bearing lubrication and cooling structure according to any one of claims 1 to 3, wherein an inlet of the mixed liquor passage communicating with the mixing chamber is circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110968897.7A CN113482964B (en) | 2021-08-23 | 2021-08-23 | High-temperature hot water circulating pump with guide bearing lubricating and cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110968897.7A CN113482964B (en) | 2021-08-23 | 2021-08-23 | High-temperature hot water circulating pump with guide bearing lubricating and cooling structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113482964A CN113482964A (en) | 2021-10-08 |
| CN113482964B true CN113482964B (en) | 2023-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110968897.7A Active CN113482964B (en) | 2021-08-23 | 2021-08-23 | High-temperature hot water circulating pump with guide bearing lubricating and cooling structure |
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| Country | Link |
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| CN (1) | CN113482964B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5248245A (en) * | 1992-11-02 | 1993-09-28 | Ingersoll-Dresser Pump Company | Magnetically coupled centrifugal pump with improved casting and lubrication |
| JP2005282469A (en) * | 2004-03-30 | 2005-10-13 | Kubota Corp | Cooling structure for pump motor |
| JP2014185616A (en) * | 2013-03-25 | 2014-10-02 | Aisin Seiki Co Ltd | Water pump |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH485133A (en) * | 1968-01-24 | 1970-01-31 | Klein Schanzlin & Becker Ag | Process for ensuring the cooling of the shaft seal and medium-lubricated radial bearings of circulating pumps operating under high system pressures |
| JP3993262B2 (en) * | 1997-01-10 | 2007-10-17 | 三菱重工業株式会社 | Temperature fluctuation prevention device for high temperature liquid pump |
| JP5804989B2 (en) * | 2012-03-13 | 2015-11-04 | 三菱重工業株式会社 | Turbo pump |
| CN103185023B (en) * | 2013-03-08 | 2015-06-10 | 江苏大学 | Guide bearing structure of hot water circulation pump |
| CN106996397A (en) * | 2017-05-22 | 2017-08-01 | 丹东通博泵业有限公司 | The interior cooling recirculation system structure of magnetic drive pump |
-
2021
- 2021-08-23 CN CN202110968897.7A patent/CN113482964B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5248245A (en) * | 1992-11-02 | 1993-09-28 | Ingersoll-Dresser Pump Company | Magnetically coupled centrifugal pump with improved casting and lubrication |
| JP2005282469A (en) * | 2004-03-30 | 2005-10-13 | Kubota Corp | Cooling structure for pump motor |
| JP2014185616A (en) * | 2013-03-25 | 2014-10-02 | Aisin Seiki Co Ltd | Water pump |
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| CN113482964A (en) | 2021-10-08 |
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