CN113482964A - 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
- Publication number
- CN113482964A CN113482964A CN202110968897.7A CN202110968897A CN113482964A CN 113482964 A CN113482964 A CN 113482964A CN 202110968897 A CN202110968897 A CN 202110968897A CN 113482964 A CN113482964 A CN 113482964A
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- Prior art keywords
- cooling
- guide bearing
- pump
- hot water
- pump cover
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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: 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 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; and the cooling liquid flow channel is arranged on the pump body. The invention solves the technical problem that the stable operation of a hot water circulating pump is influenced by overhigh temperature of a 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 hot water circulating pumps are used to convey high-temperature media in the fields of petrochemical electric power, metallurgical industry, 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 a rotor and the sealing effect of a sealing part are influenced; for example, patent No. CN103185023B discloses a guide bearing structure of a hot water circulation pump, in which a high-temperature medium flowing out from a gap between an impeller back cover plate and a pump body lubricates the guide bearing, but the high temperature affects the stability of a rotor.
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 by overhigh temperature of a pumping medium in the prior art.
The embodiment of the application discloses high temperature hot water circulating pump of lubricated cooling structure of bearing is led in area 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 installed 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, 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, 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 on one side, far away from the impeller rear cover plate, of the shaft sleeve;
the pump body is sleeved on the guide bearing and connected with the pump cover;
the mixed liquid channel is arranged on the pump cover, 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 channel is arranged on the pump body and extends from the outer end face of the pump body to the mixing cavity.
According to the embodiment of the application, the temperature of the pumping medium is reduced by increasing the cooling liquid flow channel, so that the aims of lubricating the guide bearing and improving the operation stability of the high-temperature pump can be fulfilled.
On the basis of the technical scheme, the embodiment of the application can be further improved as follows:
furthermore, the number of the cooling liquid flow channels is at least four, and the cooling liquid flow channels are symmetrically distributed around the main shaft.
Furthermore, the mixed liquid channel is four at least, and the mixed liquid channel is about the main shaft symmetric distribution, the beneficial effect of this step of adoption is that can realize the mixture of high temperature medium and coolant through mixed liquid channel, reduces the temperature of high temperature medium.
Further, coolant liquid runner includes guide bearing cooling segment and pump cover cooling segment, guide bearing cooling segment is located guide bearing is inside in order to realize the cooling of guide bearing, pump cover cooling segment is located the inside cooling in order to realize the pump cover of pump cover, and the beneficial effect who adopts this step is with a plurality of cooling segments to after realizing lubricated effect, can also realize refrigerated effect.
Furthermore, the pump cover cooling section and the high-temperature medium flow passage exchange heat in a heat convection mode through the pump cover, and the pump cover cooling section and the high-temperature medium flow passage have the beneficial effect of cooling the pump cover.
Furthermore, 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 mode.
Furthermore, the high-temperature medium flow channel is composed of a plurality of vertical high-temperature sections and a plurality of horizontal high-temperature sections, the vertical high-temperature sections are communicated with the horizontal high-temperature sections in a staggered mode, and the heat exchange effect can be improved.
Further, the mixed liquid channel is circular with the entry that the hybrid chamber communicates.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
1. the coolant flow of this application embodiment is through leading the bearing, plays lubricated effect to leading the bearing.
2. Before the high-temperature medium and the cooling liquid are mixed, the high-temperature medium transfers heat to the cooling liquid in a convection heat exchange mode, and thermal fatigue of the pump cover and the main shaft caused by direct mixing of the high-temperature medium and the cooling liquid is relieved; the mixed liquid flows back to the impeller through the flow channel.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a high-temperature hot water circulating pump with a guide bearing lubricating and cooling structure according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of a part B of a high temperature hot water circulating pump with a guide bearing lubrication cooling structure according to an embodiment of the present invention;
FIG. 3 is a sectional view taken along line 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-high temperature medium flow channel; 7-a guide bearing; 8-a pump body; 9-a mixed liquor channel; 10-coolant flow channel;
1001-guide bearing cooling section; 1002-pump cover cooling section; 1003-vertical cooling section; 1004-horizontal cooling section;
6001-horizontal high temperature section; 6002-vertical high temperature section.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
In the description of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The embodiment of the application provides a high temperature hot water circulating pump of lubricated cooling structure of bearing is led in area, has solved among the prior art pump sending medium high temperature, influences the technical problem of hot water circulating pump steady operation.
The general idea of the embodiment of the application is as follows: the pump body is provided with the cooling flow channel, 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 technical solutions, the technical solutions will be described in detail below with reference to the drawings and the detailed description.
Example (b):
as shown in fig. 1-2, the embodiment of the application discloses a high-temperature hot water circulating pump with a guide bearing lubrication and cooling structure, which completes the cooling of a high-temperature medium of a pump body, and the specific structure of the high-temperature hot water circulating pump comprises:
a main shaft 1 which is a main shaft of the pump body;
the impeller rear cover plate 2 is arranged on the main shaft 1 and used for completing the assembly of the impeller;
the shaft sleeve 3 is arranged on the main shaft 1, the shaft sleeve 3 is positioned on one side of the impeller rear cover plate 2, and the shaft sleeve 3 is assembled on the main shaft 1;
the pump cover 4 is installed on the shaft sleeve 3, 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 passage 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 passage 6 is communicated with the mixing cavity 5, a medium flows out from the high-temperature medium flow passage 6, flows into the mixing cavity 5, is cooled, and finally flows out from the mixing cavity 5, so that the treatment is completed;
the guide bearing 7 is sleeved on the main shaft 1, and the guide bearing 7 is positioned on one side, away from the impeller rear cover plate 2, of the shaft sleeve 3;
the pump body 8 is sleeved on the guide bearing 7, and the pump body 8 is connected with the pump cover 4;
the mixed liquid channel 9 is arranged on the pump cover 4, one end of the mixed liquid channel 9 extends into the mixing cavity 5, and the other end of the mixed liquid channel extends to the end part of the main shaft 1;
coolant liquid runner 10, set up in on the pump body 8, coolant liquid runner 10 certainly the outer terminal surface of the pump body 8 extends to mixing chamber 5, this application embodiment cools off the pump body through coolant liquid runner 10, mixes with high temperature medium simultaneously, mixes the back, 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 flow passages 10 is at least four, and the cooling liquid flow passages 10 are symmetrically distributed about the main shaft 1, wherein the number of the cooling liquid flow passages 10 is multiple, so that the overall cooling of the pump body can be completed, and the cooling effect is improved.
The number of the mixed liquid channels 9 is at least four, the mixed liquid channels 9 are symmetrically distributed around the main shaft 1, and the mixed liquid channels 9 can improve the flowing effect.
In another embodiment, the coolant 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 achieve cooling of the guide bearing 7, and the pump cover cooling section 1002 is located inside the pump cover 4 to achieve cooling of the pump cover 4, in this embodiment, the coolant flow channel 10 is divided into at least two sections, where the guide bearing cooling section 1001 is used for cooling the guide bearing and lubricating the guide bearing to prolong the service life thereof; and pump cover cooling section 1002 is the cooling of accomplishing the pump cover, because high temperature medium can lead to the pump cover temperature to rise through the pump cover, influences its leakproofness, consequently can accomplish the cooling of pump cover through pump cover cooling section 1002, avoids its high temperature, influences sealedly.
Specifically, the pump cover cooling section 1002 and the high-temperature medium flow passage 6 exchange heat in a heat convection manner through the pump cover 4, that is, the pump cover 4 can be cooled in this manner.
In another embodiment, the pump cover cooling section 1002 is composed of a plurality of vertical cooling sections 1003 and a plurality of horizontal cooling sections 1004, and the vertical cooling sections 1003 and the horizontal cooling sections 1004 are in staggered communication; simultaneously, high temperature medium runner 6 comprises a plurality of vertical high temperature sections 6001 and a plurality of horizontal high temperature sections 6002, vertical high temperature section 6001 with crisscross intercommunication of horizontal high temperature section 6002, in this application embodiment, pump cover cooling section 1002 comprises a plurality of horizontal segments and vertical section, can form S type winding direction like this, perhaps C type, or other channels that wind to more, can abundant heat transfer, same high temperature medium runner 6 is also so, can guarantee like this that the pump cover is refrigerated simultaneously, also can guarantee that high temperature medium is cooled, improve its cooling effect, furtherly, as shown in fig. 3, the longitudinal section of pump cover cooling section 1002 and high temperature medium runner 6 in this application embodiment is the annular.
Specifically, the inlet of the mixed liquid channel 9, which is communicated with the mixing cavity 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, and the guide bearing 7 can be lubricated in normal operation; after the guide bearing 7 is lubricated, the cooling liquid flows into the mixing cavity 5 along the cooling liquid flow passage 10;
after overflowing, the high-temperature medium enters the mixing cavity 5 along the high-temperature medium flow passage 6, is mixed with the cooling liquid, and then flows back to the impeller through the mixed liquid passage 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 thermal fatigue of the pump cover 4 and the main shaft 1 caused by the direct mixing of cold and hot fluids is relieved.
In the description of the present invention, numerous specific details are set forth. It is understood, however, 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 herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (8)
1. The utility model provides a high temperature hot water circulating pump of bearing lubrication and cooling structure is led in area 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 installed 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, 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, 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 on one side, far away from the impeller rear cover plate, of the shaft sleeve;
the pump body is sleeved on the guide bearing and connected with the pump cover;
the mixed liquid channel is arranged on the pump cover, 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 channel is arranged on the pump body and extends from the outer end face of the pump body to the mixing cavity.
2. The high temperature hot water circulating pump with guide bearing lubricating and cooling structure as claimed in 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 circulating pump with a guide bearing lubricating and cooling structure as claimed in claim 1, wherein the number of the mixed liquid channels is at least four, and the mixed liquid channels are symmetrically distributed about the main shaft.
4. The high temperature hot water circulation pump with a guide bearing lubrication cooling structure of claim 1, wherein the coolant flow channel comprises a guide bearing cooling section and a pump cover cooling section, the guide bearing cooling section is located inside the guide bearing to achieve cooling of the guide bearing, and the pump cover cooling section is located inside the pump cover to achieve cooling of the pump cover.
5. The high-temperature hot water circulating pump with the guide bearing lubricating and cooling structure as claimed in claim 4, wherein the pump cover cooling section exchanges heat with the high-temperature medium flow passage through the pump cover in a heat convection manner.
6. The high-temperature hot water circulating pump with the guide bearing lubricating and cooling structure as claimed in claim 5, wherein 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.
7. The high-temperature hot water circulating pump with the guide bearing lubricating and cooling structure as claimed in claim 6, wherein the high-temperature medium flow passage is composed of a plurality of vertical high-temperature sections and a plurality of horizontal high-temperature sections, and the vertical high-temperature sections are in staggered communication with the horizontal high-temperature sections.
8. The high-temperature hot water circulating pump with the guide bearing lubricating and cooling structure as claimed in any one of claims 1 to 7, wherein an inlet of the mixed liquid channel 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 true CN113482964A (en) | 2021-10-08 |
| CN113482964B CN113482964B (en) | 2023-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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Citations (8)
| 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 |
| US5248245A (en) * | 1992-11-02 | 1993-09-28 | Ingersoll-Dresser Pump Company | Magnetically coupled centrifugal pump with improved casting and lubrication |
| JPH10196581A (en) * | 1997-01-10 | 1998-07-31 | Mitsubishi Heavy Ind Ltd | Temperature fluctuation preventing device for high temperature liquid pump |
| JP2005282469A (en) * | 2004-03-30 | 2005-10-13 | Kubota Corp | Cooling structure for pump motor |
| CN103185023A (en) * | 2013-03-08 | 2013-07-03 | 江苏大学 | Guide bearing structure of hot water circulation pump |
| JP2013189915A (en) * | 2012-03-13 | 2013-09-26 | Mitsubishi Heavy Ind Ltd | Turbo pump |
| JP2014185616A (en) * | 2013-03-25 | 2014-10-02 | Aisin Seiki Co Ltd | Water 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 (8)
| 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 |
| US5248245A (en) * | 1992-11-02 | 1993-09-28 | Ingersoll-Dresser Pump Company | Magnetically coupled centrifugal pump with improved casting and lubrication |
| JPH10196581A (en) * | 1997-01-10 | 1998-07-31 | Mitsubishi Heavy Ind Ltd | Temperature fluctuation preventing device for high temperature liquid pump |
| JP2005282469A (en) * | 2004-03-30 | 2005-10-13 | Kubota Corp | Cooling structure for pump motor |
| JP2013189915A (en) * | 2012-03-13 | 2013-09-26 | Mitsubishi Heavy Ind Ltd | Turbo pump |
| CN103185023A (en) * | 2013-03-08 | 2013-07-03 | 江苏大学 | Guide bearing structure of hot water circulation pump |
| JP2014185616A (en) * | 2013-03-25 | 2014-10-02 | Aisin Seiki Co Ltd | Water 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 |
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| Publication number | Publication date |
|---|---|
| CN113482964B (en) | 2023-07-04 |
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