CN106640732A - Molten salt pump - Google Patents
Molten salt pump Download PDFInfo
- Publication number
- CN106640732A CN106640732A CN201611229046.6A CN201611229046A CN106640732A CN 106640732 A CN106640732 A CN 106640732A CN 201611229046 A CN201611229046 A CN 201611229046A CN 106640732 A CN106640732 A CN 106640732A
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- choma
- impeller
- pump
- molten salt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- 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
- F04D29/044—Arrangements for joining or assembling shafts
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing 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
- 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
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 molten salt pump which comprises a motor and a rotating shaft connected with the motor. An impeller is arranged at the bottom of the rotating shaft, the molten salt pump further comprises a shell used for containing the rotating shaft and the impeller, an upper impeller ring is fixedly installed on the portion, located on the upper portion of the impeller, of the rotating shaft, the upper impeller ring is used for separating and communicating of the inner space of the shell where the impeller is located and other inner spaces of the shell, and a lower impeller ring with the cross section area smaller than that of the upper impeller ring is fixedly connected to the bottom surface of the upper impeller ring. The rotating shaft and the impeller which serve as rotors of the molten salt pump have very large weight, the molten salt pump rotates with the rotating shaft through the upper impeller ring and the lower impeller ring, due to the fact that the cross section areas are different, the down force generated on the upper surface of the upper impeller ring is smaller than up-thrust generated by the lower surface of the lower impeller ring, and therefore residual force obtained after the up-thrust offsets the down force can be used for balancing the gravity of the rotors. By adopting the structural design, on the basis that an existing molten salt pump structure is not changed too much, the gravity of the rotors can be balanced conveniently, the working efficiency of the molten salt pump is improved, and meanwhile energy consumption of the molten salt pump can be reduced.
Description
Technical field
The present invention relates to materials-handling technology field, more particularly, it relates to a kind of pump for liquid salts.
Background technology
High-temperature molten salt can be used for the purposes such as preparation into row metal, and high-temperature molten salt need to be carried out by pump for liquid salts in itself it is defeated
Send.
At present conventional fused salt submerged pump includes motor, rotating shaft and circular cylindrical shell, and circular cylindrical shell is used as fused salt submerged pump
Outlet pipe, in addition it is also necessary to connect independence outlet pipe outside again in the side of outlet pipe, by the water inlet of the bottom inlet of pump, two
Root outlet pipe water outlet, realizes the process of circulation of related liquid.Independent outlet pipe outside often also needs to arrange many places bending section
Conveniently by liquid guide flow to suitable direction and position.Meanwhile, part pump for liquid salts is simultaneously not provided for the structure of balancing axial thrust,
The larger gravity of rotor causes the transfer efficiency of pump for liquid salts to be affected, and also so that pump for liquid salts is easily damaged, service life is inadequate
It is long.Certainly, part pump for liquid salts also is used for balancing axial thrust using the structure such as bilobed wheel or accessory impeller, but using effect is not
Ideal, and additional said structure also brings the problem of processing burden and pump for liquid salts production cost.
In sum, how to efficiently solve axial force larger during pump for liquid salts use to be difficult to very easily be balanced
Problem, be current those skilled in the art's urgent problem.
The content of the invention
In view of this, it is an object of the invention to provide a kind of pump for liquid salts, the structure design of the pump for liquid salts can be effectively
Solve the problems, such as that axial force larger during pump for liquid salts use is difficult to very easily be balanced.
In order to achieve the above object, the present invention provides following technical scheme：
A kind of pump for liquid salts, including motor and the rotating shaft with motor connection, the bottom of rotating shaft is provided with impeller, also includes for holding
Receive the housing of rotating shaft and impeller, rotating shaft is located at the top of impeller and is installed with choma, and upper choma is used to separate and connect leaf
The inner space and remaining inner space of housing of the housing that wheel is located, it is little that the bottom surface of upper choma is fixedly connected with cross-sectional area
In the lower choma of upper choma.
Preferably, in above-mentioned pump for liquid salts, upper choma and lower choma are symmetrically arranged with regard to rotating shaft.
Preferably, in above-mentioned pump for liquid salts, the cross section of upper choma is L-shaped, is internally provided with being closed for connecting enclosure interior
In the L-shaped through hole in the upper and lower part space of upper choma.
Preferably, in above-mentioned pump for liquid salts, connected by yielding coupling between the top of rotating shaft and motor.
Preferably, in above-mentioned pump for liquid salts, the surface of rotating shaft and the surfaces externally and internally of housing are equipped with nitrogen treatment layer.
Preferably, in above-mentioned pump for liquid salts, the cross-sectional area of upper choma and lower choma is provided with preset ratio.
The pump for liquid salts that the present invention is provided, including motor and the rotating shaft with motor connection, the bottom of rotating shaft is provided with impeller, also wraps
The housing for accommodating rotating shaft and impeller is included, rotating shaft is located at the top of impeller and is installed with choma, and upper choma is used to separate
With the inner space and remaining inner space of housing of the housing for connecting impeller place, the bottom surface of upper choma is fixedly connected with horizontal stroke
Lower choma of the sectional area less than upper choma.
During the pump for liquid salts provided using the present invention, rotating shaft and impeller have very big weight as the rotor of whole pump for liquid salts
Amount, by arranging choma and lower choma in rotating shaft, upper choma and lower choma follow rotating shaft to rotate together with, the upper table of upper choma
Face produces lower pressure, the lower surface of lower choma produces lifting force, because the cross-sectional area of upper choma is more than the cross section of lower choma
Product, therefore the lower pressure of upper choma is less than the lifting force of lower choma, now lifting force balance out after lower pressure remaining power can be with
For balancing the gravity of rotor.Using said structure design, the gravity of rotor can to a certain extent improve molten after being balanced
The transfer efficiency of salt pump, the prior structure to pump for liquid salts does not make very big change, without additionally arranging unnecessary leaf
The structures such as wheel so that the gravity of rotor is very easily balanced under the structure design.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of pump for liquid salts provided in an embodiment of the present invention；
Fig. 2 is the partial enlarged drawing of upper choma and lower choma position in pump for liquid salts provided in an embodiment of the present invention.
Mark in accompanying drawing as follows：
Motor 1, rotating shaft 2, impeller 3, housing 4, upper choma 5, lower choma 6, L-shaped through hole 7, yielding coupling 8.
Specific embodiment
The embodiment of the invention discloses a kind of pump for liquid salts, can be very square on the basis of existing fused salt pump configuration is not excessively changed
The gravity of balance rotor just, improves the operating efficiency of pump for liquid salts, while the energy consumption of pump for liquid salts can also be reduced.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 is referred to, Fig. 1 is the structural representation of pump for liquid salts provided in an embodiment of the present invention, and Fig. 2 is the embodiment of the present invention
The partial enlarged drawing of upper choma and lower choma position in the pump for liquid salts of offer.
The embodiment provides a kind of pump for liquid salts, including motor 1 and the rotating shaft 2 that is connected with motor 1, rotating shaft 2
Bottom is provided with impeller 3, also includes the housing 4 for accommodating rotating shaft 2 and impeller 3, and rotating shaft 2 is located at the top of impeller 3 and fixedly mounts
Have a upper choma 5, upper choma 5 be used to separating the inner space and housing 4 with the housing 4 for connecting the place of impeller 3 remaining inside
Space, the bottom surface of upper choma 5 is fixedly connected with lower choma 6 of the cross-sectional area less than upper choma 5.
During the pump for liquid salts provided using above-described embodiment, rotating shaft 2 and impeller 3 have very as the rotor of whole pump for liquid salts
Big weight, by arranging choma 5 and lower choma 6 in rotating shaft 2, upper choma 5 and lower choma 6 follow rotating shaft 2 to rotate together with,
The upper surface of upper choma 5 produces lower pressure, the lower surface of lower choma 6 and produces lifting force, because the cross-sectional area of upper choma 5 is more than
The cross-sectional area of lower choma 6, therefore the lower pressure of upper choma 5 is less than the lifting force of lower choma 6, now lifting force is balanced out and pushed
Remaining power can be used for balancing the gravity of rotor after power.Using said structure design, the gravity of rotor can be with after being balanced
The transfer efficiency of pump for liquid salts is improved to a certain extent, and the prior structure to pump for liquid salts does not make very big change, without
The structures such as unnecessary impeller 3 are additionally set so that the gravity of rotor is very easily balanced under the structure design.
The using effect of upper choma 5 and lower choma 6 in order to optimize above-described embodiment, upper choma 5 and lower choma 6 with regard to
Rotating shaft 2 is symmetrically arranged.It is preferred that upper choma 5 and lower choma 6 are symmetrically arranged with regard to rotating shaft 2, i.e., the two is respectively provided with circle
The profile of plate-like and coaxially it is distributed with rotating shaft 2 so that the interaction force of the two can more uniformly, the more stable work for making power
With line and the dead in line of rotating shaft 2, without next extra radial load while balancing axial thrust, it is ensured that it is steady that structure is run
It is qualitative.
The using effect of upper choma 5 in order to optimize above-described embodiment, the cross section of upper choma 5 is L-shaped, is internally provided with
For connecting the L-shaped through hole 7 in the upper and lower part space inside housing 4 with regard to upper choma 5.It is preferred that upper choma 5 has L-shaped section
With L-shaped through hole 7 so that upper choma 5 is more stable with the fixation of lower choma 6 and rotating shaft 2, and its connection housing 4 inner space
It is better smooth, when highly pressurised liquid is circulated to the vertical position of L-shaped through hole 7 freely flow to horizontal direction along bend, and
Space of the housing 4 positioned at the top of upper choma 5 is circulated to along the periphery of upper choma 5.
The using effect of rotating shaft 2 in order to optimize above-described embodiment, by elasticity connection between the top of rotating shaft 2 and motor 1
Axle device 8 connects.It is preferred that being connected by yielding coupling 8 between the top of rotating shaft 2 and motor 1 so that the moment of torsion of motor 1 can be steady
Fixed passes to rotating shaft 2, while it also has certain centering capacity, can more perfectly be applied to coaxial transmission.Additionally, the knot
Structure design also have the advantages that it is easy for installation, avoid maintenance.
The using effect of rotating shaft 2 and housing 4 in order to optimize above-described embodiment, the surface of rotating shaft 2 and the interior appearance of housing 4
Face is equipped with nitrogen treatment layer.It is preferred that the surfaces externally and internally of the surface of rotating shaft 2 and housing 4 is equipped with nitrogen treatment layer, strengthens and turn
The surface strength of axle 2 and housing 4 so that the wear-resisting and decay resistance of the two all effectively improves.Wherein, the pump for liquid salts
Each part can be made using martensitic stain less steel or 304 stainless steels, be mainly used in playing heat-resistant antifriction and increase stress
The effect of intensity.
It is understood that the surface area of upper choma 5 and lower choma 6 is provided with preset ratio.It is preferred that upper choma 5 and lower choma
6 cross-sectional area is provided with preset ratio, then can adjust size for balancing the power of rotor gravity by the preset ratio, changes
Become preset ratio to suitable value, the gravity of the power and rotor for balancing rotor gravity can be caused equal, also just make the weight of rotor
Power is just fully balanced, and the axial force of pump for liquid salts is zero, and its running efficiency reaches certain height value.Certainly, even turning
The gravity of son is not fully balanced, and only balances a part for rotor gravity, also plays the skill it is within the contemplation of the invention that realizing
Art effect, belongs to protection scope of the present invention.
Each embodiment is described by the way of progressive in this specification, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
Also, it should be noted that in this manual, term " including ", "comprising" or its any other variant are intended to contain
Lid nonexcludability is included, so that a series of process, method, article or equipment including key elements not only will including those
Element, but also including other key elements being not expressly set out, or also include for this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element for being limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope for causing.
Claims (6)
1. a kind of pump for liquid salts, including motor (1) and the rotating shaft (2) being connected with the motor (1), the bottom of the rotating shaft (2) sets
There is impeller (3), also include the housing (4) for accommodating the rotating shaft (2) and the impeller (3), it is characterised in that the rotating shaft
(2) it is installed with upper choma (5) positioned at the top of the impeller (3), the upper choma (5) is for separating and connect the leaf
The inner space and remaining inner space of the housing (4) of the housing (4) that wheel (3) is located, the upper choma (5)
Bottom surface is fixedly connected with lower choma (6) of the cross-sectional area less than the upper choma (5).
2. pump for liquid salts according to claim 1, it is characterised in that the upper choma (5) and the lower choma (6) with regard to
The rotating shaft (2) is symmetrically arranged.
3. pump for liquid salts according to claim 2, it is characterised in that the cross section of the upper choma (5) is L-shaped, inside it
It is provided with the L-shaped through hole (7) for connecting the internal upper and lower part space with regard to the upper choma (5) of the housing (4).
4. pump for liquid salts according to claim 3, it is characterised in that between the top of the rotating shaft (2) and the motor (1)
Connected by yielding coupling (8).
5. pump for liquid salts according to claim 4, it is characterised in that the surface of the rotating shaft (2) and the housing (4) it is interior
Outer surface is equipped with nitrogen treatment layer.
6. the pump for liquid salts according to any one of claim 1 to 5, it is characterised in that the upper choma (5) and the lower choma
(6) cross-sectional area is provided with preset ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611229046.6A CN106640732A (en) | 2016-12-27 | 2016-12-27 | Molten salt pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611229046.6A CN106640732A (en) | 2016-12-27 | 2016-12-27 | Molten salt pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106640732A true CN106640732A (en) | 2017-05-10 |
Family
ID=58831913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611229046.6A Pending CN106640732A (en) | 2016-12-27 | 2016-12-27 | Molten salt pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106640732A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3759628A (en) * | 1972-06-14 | 1973-09-18 | Fmc Corp | Vortex pumps |
| CN2071267U (en) * | 1989-12-30 | 1991-02-13 | 郭宝权 | Vane automatic balance shaft force centrifugal pump |
| CN2127749Y (en) * | 1992-07-20 | 1993-03-03 | 山东省日照水泵厂 | Vertical suspension centrifugal pump |
| CN201106570Y (en) * | 2007-08-21 | 2008-08-27 | 上海凯实利制泵有限公司 | Long axis deep well pump |
| CN101392755A (en) * | 2007-09-19 | 2009-03-25 | 何光国 | Molten salt pump |
| RU2449176C2 (en) * | 2010-07-12 | 2012-04-27 | Открытое акционерное общество ОАО "АЛНАС" | Stage of submersible multi-stage centrifugal pump |
| CN204041528U (en) * | 2014-08-25 | 2014-12-24 | 上海瑞邦机械集团有限公司 | A kind of multistage pump of automatically balancing axial force |
| CN205423279U (en) * | 2015-12-22 | 2016-08-03 | 山东长志泵业有限公司 | LNG immersed pump of whole axial forces of impeller automatic balance |
-
2016
- 2016-12-27 CN CN201611229046.6A patent/CN106640732A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3759628A (en) * | 1972-06-14 | 1973-09-18 | Fmc Corp | Vortex pumps |
| CN2071267U (en) * | 1989-12-30 | 1991-02-13 | 郭宝权 | Vane automatic balance shaft force centrifugal pump |
| CN2127749Y (en) * | 1992-07-20 | 1993-03-03 | 山东省日照水泵厂 | Vertical suspension centrifugal pump |
| CN201106570Y (en) * | 2007-08-21 | 2008-08-27 | 上海凯实利制泵有限公司 | Long axis deep well pump |
| CN101392755A (en) * | 2007-09-19 | 2009-03-25 | 何光国 | Molten salt pump |
| RU2449176C2 (en) * | 2010-07-12 | 2012-04-27 | Открытое акционерное общество ОАО "АЛНАС" | Stage of submersible multi-stage centrifugal pump |
| CN204041528U (en) * | 2014-08-25 | 2014-12-24 | 上海瑞邦机械集团有限公司 | A kind of multistage pump of automatically balancing axial force |
| CN205423279U (en) * | 2015-12-22 | 2016-08-03 | 山东长志泵业有限公司 | LNG immersed pump of whole axial forces of impeller automatic balance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |
|
| RJ01 | Rejection of invention patent application after publication |