CN113482937A - Hot water circulating pump mouth ring device with supporting structure - Google Patents
Hot water circulating pump mouth ring device with supporting structure Download PDFInfo
- Publication number
- CN113482937A CN113482937A CN202110968883.5A CN202110968883A CN113482937A CN 113482937 A CN113482937 A CN 113482937A CN 202110968883 A CN202110968883 A CN 202110968883A CN 113482937 A CN113482937 A CN 113482937A
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- China
- Prior art keywords
- pump body
- ring
- pump
- impeller
- hot water
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- Pending
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000012530 fluid Substances 0.000 claims abstract description 35
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Images
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
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
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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
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
-
- 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
-
- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a hot water circulating pump mouth ring device with a supporting structure, which relates to the technical field of fluid mechanical devices and comprises: a pump body; the pump body mouth ring is arranged in the pump body; the impeller is arranged in the pump body; the impeller opening ring is arranged on the impeller and is positioned on the inner side surface of the pump body opening ring, and a gap is reserved between the outer side surface of the impeller opening ring and the inner side surface of the pump body opening ring; and one end of the supporting component is communicated with the pump body, and the other end of the supporting component is communicated with the pump body opening ring and extends to the gap. The invention solves the technical problem that the supporting effect of the sealing fluid of the mouth ring gap on the rotor is poor in the prior art.
Description
Technical Field
The invention relates to the technical field of fluid machinery, in particular to a hot water circulating pump orifice ring device with a supporting structure.
Background
The high-temperature hot water circulating pump is widely applied to the fields of nuclear power, thermal power, metallurgy, petrifaction and the like, various media with high temperature and high pressure are conveyed, extreme environments such as high-temperature vaporization and sudden increase of production load have quite strict requirements on the performance and reliability of the high-temperature hot water circulating pump, the problem that the reliability of key parts is poor due to high-temperature working conditions is more prominent, and particularly the stability of a rotor has important influence on the stable operation of the high-temperature hot water circulating pump under the conditions of deviated working conditions and the like.
In engineering design, a bearing is generally arranged to enhance the supporting effect on the rotor, improve the critical rotating speed of the rotor and ensure the stability of the rotor. The mouth ring is an important part of a high-temperature hot water circulating pump, and sealing fluid in the gap of the mouth ring plays a role similar to an oil film and has a certain supporting effect on a rotor, but the effect is not obvious.
Disclosure of Invention
The invention aims to provide a hot water circulating pump orifice ring device with a supporting structure, which solves the technical problem that in the prior art, the supporting effect of sealing fluid in an orifice ring gap on a rotor is poor.
The embodiment of the application discloses take bearing structure's hot-water circulation pump choma device includes:
a pump body;
a pump body orifice ring mounted inside the pump body;
the impeller is arranged in the pump body;
the impeller opening ring is arranged on the impeller and is positioned on the inner side surface of the pump body opening ring, and a gap is reserved between the outer side surface of the impeller opening ring and the inner side surface of the pump body opening ring;
and one end of the supporting component is communicated with the pump body, and the other end of the supporting component is communicated with the pump body opening ring and extends to the gap.
The clearance between supporting component and the choma is mutually supported, can improve follow-up supporting effect, guarantees the supporting effect of choma.
On the basis of the technical scheme, the embodiment of the application can be further improved as follows:
further, the supporting components are four groups, and the supporting components are distributed at intervals in the circumferential direction of the pump body, so that the beneficial effect of the step is that the direction of the subsequent liquid entering the gap is controlled conveniently through the multiple groups of supporting components, and the stability is improved.
Further, the support assembly includes:
the fluid channels are arranged on the pump body port ring at intervals and distributed at intervals along the circumferential direction of the pump body port ring;
the connecting pipe, one end with the pump body intercommunication, the other end with fluid passage intercommunication, the beneficial effect who adopts this step is that high-pressure fluid passes through the connecting pipe and gets into the clearance, when strengthening the supporting effect, can not influence the operation of the pump body.
Further, install flow controller on the connecting pipe, the beneficial effect who adopts this step is that can accomplish flow control through flow controller to improve holistic stability.
Furthermore, the incident direction of the fluid conveyed by the connecting pipe deviates to the inlet direction of the impeller, and the beneficial effects of the step are that leakage loss can be reduced, and the performance of the high-temperature hot water circulating pump is ensured.
One or more technical solutions provided in the present application have at least the following technical effects or advantages:
1. this application passes through the connecting pipe and passes through the leading-in pump body choma of connecting pipe and the clearance between impeller choma with the high-pressure fluid in the high temperature hot water circulating pump spiral case to this stability that improves hot water circulating pump rotor operation.
2. This application is in the inclined to one side operating mode of high temperature hot water circulating pump, when operating stability is relatively poor in the pump, can increase the aperture of the flow controller on the connecting pipe, and the high-pressure fluid in choma clearance can play the supporting role to the rotor part, reduces revealing loss of pump, the operating stability of reinforcing pump.
3. This application combines high temperature hot water circulating pump self structural feature to set up the structure, utilizes the interior high-pressure fluid of spiral case to strengthen the supporting effect of choma, does not influence the stable practicality and the maneuverability that have of pump overall structure.
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 hot water circulation pump orifice ring device with a supporting structure according to an embodiment of the present invention;
fig. 2 is a schematic assembly diagram of a pump body orifice ring and an impeller orifice ring in a hot water circulation pump orifice ring device with a supporting structure according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a gap of a hot water circulation pump orifice ring device with a supporting structure according to an embodiment of the present invention;
reference numerals:
1-a pump body; 2-pump body orifice ring; 3-an impeller; 4-impeller eye ring; 5-clearance; 6-a support assembly;
601-a fluid channel; 602-connecting tube; 603-flow controller.
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 take bearing structure's hot-water circulating pump choma device, has solved among the prior art sealed fluid in choma clearance and has poor technical problem to the support effect of rotor.
The general idea of the embodiment of the application is as follows: the opening ring of the pump body is provided with a channel, so that subsequent high-pressure fluid can conveniently enter the gap through the connecting pipe, the high-pressure fluid in the gap generates flow field force, the sealing effect of the high-pressure fluid is equivalent to increase the rigidity of the rotor, and the stability of the rotor can be further improved.
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. 1-3, the present application discloses a hot water circulation pump orifice ring device with a supporting structure, which includes:
the pump body 1 is a pump body of a circulating pump, and the embodiment of the application directly utilizes part of high-temperature fluid in the pump body 1 so as to improve the stability of the whole device;
a pump body orifice ring 2 mounted inside the pump body 1;
an impeller 3 mounted inside the pump body 1;
the impeller opening ring 4 is arranged on the impeller 3, the impeller opening ring 4 is positioned on the inner side surface of the pump body opening ring 2, and a gap 5 is reserved between the outer side surface of the impeller opening ring 4 and the inner side surface of the pump body opening ring 2;
and one end of the supporting component 6 is communicated with the pump body, and the other end of the supporting component 6 is communicated with the pump body port ring 2 and extends to the gap 5.
In the embodiment of the application, high-temperature fluid in the volute of the circulating pump is guided into the inter-ring gap between the pump body port ring 2 and the impeller port ring 4 through the supporting assembly 6. When the circulating pump takes place partial operating mode, the operating stability is relatively poor in the pump, adjusts supporting component 6 for high-pressure fluid can play the supporting role to the rotating part, reduces revealing loss of pump, and the rotor that indicates in this application is rotating parts such as pump shaft, impeller.
In one embodiment, the support assemblies 6 in the embodiment of the present application are four groups, and the support assemblies 6 are distributed at intervals along the circumferential direction of the pump body 1, so that a multi-point introduction is formed, and the stability of the pump body can be improved.
In another embodiment, as shown in fig. 1, 2 and 3, the supporting component 6 specifically includes:
a plurality of fluid channels 601, the fluid channels 601 are arranged on the pump body orifice ring at intervals, and the fluid channels 601 are distributed at intervals along the circumferential direction of the pump body orifice ring 2;
a connection pipe 602, one end of which is communicated with the pump body 1 and the other end of which is communicated with the fluid channel 601; the support assembly 6 in the embodiment of the present application is composed of two parts, one of which is a fluid channel 601, and is communicated with the gap 5, i.e. high-temperature fluid can enter into the gap from the fluid channel 601; and the other is a connecting pipe 602, the connecting pipe 602 can be in threaded communication with the pump body 1, so that stability can be ensured, and the connecting pipe 602 enables fluid to flow into the gap from the inside of the pump body 1.
Specifically, in the embodiment of the present application, a flow controller 603 may be further installed on the connection pipe 602, and the flow controller 603 may implement flow control of the connection pipe 602; when the circulating pump takes place the off-normal operating mode, operating stability is relatively poor in the pump, and through the aperture of increase flow controller 603, during the fluid gets into the clearance, can play the supporting role to the rotor part, reduces revealing loss of pump, reinforcing pump operating stability.
The incident direction of the fluid conveyed by the connecting pipe 602 deviates to the inlet direction of the impeller 3, so that leakage loss can be reduced, and after the fluid enters the gap, a supporting force facing the inlet direction of the impeller 3 is formed, and interference between the impeller 3 and the inner wall of the pump body is avoided.
The YGB200-400 type high-temperature hot water circulating pump is used as a research object, a mouth ring structure with a radial gap of 0.65mm and an axial length of 18mm is selected for numerical simulation, two conditions of no supporting structure and the supporting structure are respectively calculated for calculating the mouth ring dynamic characteristic coefficient, and a Black calculation model is adopted.
The expression is as follows:
in the formula, the rigidity kxx＝kyy＝K；kxy＝-kyx＝k；
Damping cxx＝cyy＝C；cxy＝-cyx＝c；
cxx＝cyy＝μ1μ3T，cxy＝-cyx＝μ2μ3ωT2
The coefficients in the above formula are:
where Δ P is seal pressure drop, ξ is circumferential loss coefficient, σ is friction loss coefficient, R is seal radius, λ is friction factor, l is axial length, δ is radial clearance, v is average flow velocity, Re iscReynolds number in the circumferential direction, RewReynolds number in the axial direction, ω is angular velocity, and v is viscosity coefficient. Velocity and pressure monitoring points are arranged at the fluid domain orifice ring gap, and the result of calculating the dynamic characteristic coefficient of the orifice ring gap according to the empirical formula is shown in table 1:
TABLE 1 simulation results of dynamic characteristic coefficients of orifice rings
The support structure provided by the invention can effectively improve the dynamic characteristic coefficient of the opening ring, so that the impeller can be supported, and the stability of the high-temperature hot water circulating pump rotor is improved.
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 (5)
1. A hot water circulating pump hoop device with a supporting structure is characterized by comprising:
a pump body;
a pump body orifice ring mounted inside the pump body;
the impeller is arranged in the pump body;
the impeller opening ring is arranged on the impeller and is positioned on the inner side surface of the pump body opening ring, and a gap is reserved between the outer side surface of the impeller opening ring and the inner side surface of the pump body opening ring;
and one end of the supporting component is communicated with the pump body, and the other end of the supporting component is communicated with the pump body opening ring and extends to the gap.
2. The hot water circulation pump orifice ring assembly with a support structure of claim 1, wherein the support assemblies are four groups, and the support assemblies are distributed at intervals along the circumferential direction of the pump body.
3. The hot water circulation pump eye device with support structure of claim 1, wherein the support assembly comprises:
the fluid channels are arranged on the pump body port ring at intervals and distributed at intervals along the circumferential direction of the pump body port ring;
and one end of the connecting pipe is communicated with the pump body, and the other end of the connecting pipe is communicated with the fluid channel.
4. The hot water circulation pump eye device with a support structure of claim 3, wherein a flow controller is mounted on the connecting tube.
5. The hot water circulation pump orifice ring assembly with a support structure of claim 4, wherein the incidence direction of the conveying fluid of the connecting pipe is biased toward the inlet direction of the impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110968883.5A CN113482937A (en) | 2021-08-23 | 2021-08-23 | Hot water circulating pump mouth ring device with supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110968883.5A CN113482937A (en) | 2021-08-23 | 2021-08-23 | Hot water circulating pump mouth ring device with supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113482937A true CN113482937A (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110968883.5A Pending CN113482937A (en) | 2021-08-23 | 2021-08-23 | Hot water circulating pump mouth ring device with supporting structure |
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| CN (1) | CN113482937A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033706A (en) * | 2021-11-17 | 2022-02-11 | 嘉利特荏原泵业有限公司 | Centrifugal pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570186A (en) * | 2016-03-04 | 2016-05-11 | 浙江工业大学 | Single-stage centrifugal pump capable of achieving self balance of axial force |
| CN106438449A (en) * | 2016-10-12 | 2017-02-22 | 浙江远邦流体科技有限公司 | Seal assembly for centrifugal pump and centrifugal pump |
| CN206129682U (en) * | 2016-10-12 | 2017-04-26 | 浙江远邦流体科技有限公司 | A seal assembly and centrifugal pump for centrifugal pump |
| CN209838699U (en) * | 2019-02-01 | 2019-12-24 | 广州凯士比流体技术有限公司 | Centrifugal pump with energy-saving pump body mouth ring |
| CN111852885A (en) * | 2019-04-30 | 2020-10-30 | 山东亨泉能源科技有限公司 | High-efficiency single-stage coaxial centrifugal pump without sealing and axial force |
-
2021
- 2021-08-23 CN CN202110968883.5A patent/CN113482937A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570186A (en) * | 2016-03-04 | 2016-05-11 | 浙江工业大学 | Single-stage centrifugal pump capable of achieving self balance of axial force |
| CN106438449A (en) * | 2016-10-12 | 2017-02-22 | 浙江远邦流体科技有限公司 | Seal assembly for centrifugal pump and centrifugal pump |
| CN206129682U (en) * | 2016-10-12 | 2017-04-26 | 浙江远邦流体科技有限公司 | A seal assembly and centrifugal pump for centrifugal pump |
| CN209838699U (en) * | 2019-02-01 | 2019-12-24 | 广州凯士比流体技术有限公司 | Centrifugal pump with energy-saving pump body mouth ring |
| CN111852885A (en) * | 2019-04-30 | 2020-10-30 | 山东亨泉能源科技有限公司 | High-efficiency single-stage coaxial centrifugal pump without sealing and axial force |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033706A (en) * | 2021-11-17 | 2022-02-11 | 嘉利特荏原泵业有限公司 | Centrifugal pump |
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Application publication date: 20211008 |