CN207660832U - A kind of single tube vertical long multistage pump for liquid salts - Google Patents
A kind of single tube vertical long multistage pump for liquid salts Download PDFInfo
- Publication number
- CN207660832U CN207660832U CN201721150193.4U CN201721150193U CN207660832U CN 207660832 U CN207660832 U CN 207660832U CN 201721150193 U CN201721150193 U CN 201721150193U CN 207660832 U CN207660832 U CN 207660832U
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- Prior art keywords
- waterway
- pump
- axle sleeve
- bearing
- pump 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
- 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
Abstract
The utility model is related to a kind of single tube vertical long multistage pump for liquid salts, including water-inlet horn, impeller, spatial guide blade, pump shaft, guide bearing, pedestal, crenels seal axle sleeve, waterway, graphite bushing, mechanical seal, deep groove ball bearing, bearing gland, shaft coupling, motors.The pump housing is sectional type.Impeller is fixed on by axle sleeve, keyway series connection on pump shaft, is connected with each other with bolt between water-inlet horn, spatial guide blade.Two pieces of guide bearings are positioned between final stage guide vane and pedestal；Pedestal uses integral cast with water outlet；Crenels seal axle sleeve is with pump shaft using interference fit；Graphite bushing is placed in the waterway.Lower end is positioned using collar, and upper end resists the mechanical seal；A pair of of deep groove ball bearing be positioned over in the bearing block of waterway one；Bearing gland is used to position deep groove ball bearing, and with waterway to be bolted；Pump shaft is connect using shaft coupling to transmit torque with motor；This design scheme greatly improves the anti-cavitation performance of multistage pump.
Description
Technical field
The utility model is related to a kind of vane pump, more particularly to a kind of single tube vertical long multistage pump for liquid salts.
Background technology
Multistage pump can be used for many industrial departments such as oil, chemical industry, machinery, mine, light industry, medicine and food.In industry
In many technical process of production, if heat supply is supplied water, boiler feedwater, sea water desalination, industrial flow vacuum technique is metallurgical, dephosphorization,
Chemical industry aerating is fed, and agricultural water conservancy etc., multistage pump is widely used.Inflammable, explosive gas can be extracted, can additionally be taken out
Except dust-laden, aqueous gas, therefore, multistage pump is using increasing.
Fused salt is a kind of fuse salt that physical characteristic is excellent, is solid-state under room temperature.Fused salt conductivity is higher, the temperature used
Range is also relatively wide, and steam forces down, and thermal capacity is big, and chemical property is stablized.These advantages make fused salt not only in chemical products
It is widely applied in preparation, also fused salt is made to be widely used as heat-storing material and heat transfer medium.
High-temperature melting salt pump is the delivery pump of fused-salt medium, is widely used in chemical industry, nuclear energy and field of solar energy.Changing
Work field, pump for liquid salts are generally used for the preparation flow of the chemical products such as melamine, salt manufacturing, alkaline or urea, delivery temperature 400
The substances such as nitrate, caustic soda between ~ 460 DEG C；In the following advanced nuclear energy and photo-thermal power station, pump for liquid salts be mainly used for accumulation of heat and
The conveying of heat transfer medium, conveying is with the excellent mixed melting salt of higher heat storage capacity, heat conductivility（As Li-Be,
Li-F etc.）, medium temperature may be up to 700 DEG C, even more than 1000 DEG C.
The considerations of for heat dissipation, various pump for liquid salts were all made of vertical long structure, cold to axis progress to reserve enough spaces
But, the operating temperature of bearing is reduced.But long axle construction brings many problems to pump for liquid salts stable operation, and liquid fused salt is close in addition
Degree is big, viscosity is big, temperature is high so that this problem is more prominent.Further, since running temperature is high, the pump for liquid salts time between overhauls(TBO)
It is relatively long, once breaking down, it can give and manufacture the great economic loss of band.
Application No. is No. CN201410813359.0 Chinese invention patents to disclose a kind of vertical high-temperature long axis pump for liquid salts,
Including drive end bearing bracket, impeller, the pump housing, pump shaft, guide bearing component, bottom plate, bearing, bearing housing and support tube.Drive end bearing bracket is fixed
On the pump housing, the pump shaft is fixed on by bearing on bearing housing, and the impeller is fixed on by impeller nut on pump shaft, institute
It states and is provided with support tube between the pump housing and bottom plate, intermediate support is provided between the bottom plate and bearing housing.It is set in intermediate support
It is equipped with insulating layer of asbestos, baffle outlet high temperature and pressure fused salt is avoided and transmits temperature along axis, conveying liquid can be greatly lowered
Influence of the high temperature to bearing and sealing device, improve the service life of bearing and sealing device.
Application No. is No. CN201310144650.9 Chinese invention patents to disclose a kind of high-temperature melting salt pump, including electricity
Machine, the pump housing, impeller, pump shaft, bearing housing, middle frame and bottom plate, motor are connected to through motor rack on bearing housing, and motor is through shaft coupling
Pump shaft is connected, bearing housing is connected to bottom plate side by middle frame, and the pump housing is connected to the bottom plate other side, and pump shaft one end is through bearing branch
It holds on bearing housing, the other end is connected in the impeller in the pump housing through impeller nut, it is characterised in that：In middle frame on pump shaft
Equipped with heat dam group, heat dam group includes that multiple tracks is axial around pump shaft circumference along pump shaft along the heat-insulated annular groove of pump shaft circumferencial direction and one
Heat-insulated helicla flute.
Application No. is No. CN201310144087.5 Chinese invention patents to disclose a kind of high-temperature melting salt pump, including electricity
Machine, the pump housing, impeller, pump shaft, bearing housing, middle frame and bottom plate, motor are connected to through motor rack on bearing housing, and motor is through shaft coupling
Pump shaft is connected, bearing housing is connected to bottom plate side by middle frame, and the pump housing is connected to the bottom plate other side, and pump shaft one end is through bearing branch
It holds on bearing housing, the other end is connected in the impeller in the pump housing through impeller nut, it is characterised in that：In middle frame on pump shaft
Equipped with groups of fins, groups of fins includes a piece of above planar fins and/or a piece of above distortion cooling fin.
But the additional heat-proof device of increase is only referred in above-mentioned patent to improve the service life of device, not to close
Sealing and radiating piece carry out integrated design.
Invention content
For above-mentioned defect, current inventor provides a kind of single tube vertical long multistage pump for liquid salts.By to close
Sealing and radiating piece carry out integrated design to improve the service life and reliability that improve pump.
Technical solution is used by realizing above-mentioned purpose：
A kind of single tube vertical long multistage pump for liquid salts, the multistage pump for liquid salts use sectional type structure.Including water-inlet horn, leaf
Wheel, spatial guide blade, pump shaft, guide bearing, pedestal, crenels seal axle sleeve, waterway, graphite bushing, mechanical seal, deep-groove ball axis
It holds, bearing gland, shaft coupling, motor.
The impeller is fixed on by axle sleeve, keyway series connection on the pump shaft, is used between the water-inlet horn, spatial guide blade
Bolt is connected with each other.The series of impeller and spatial guide blade can be increased or decreased according to actual needs；
Two pieces of guide bearings are positioned between final stage guide vane and pedestal；
The pedestal uses integral cast with water outlet；
The crenels seal axle sleeve is with pump shaft using interference fit；
The graphite bushing is placed in the waterway.Lower end is positioned using collar, and upper end resists the mechanical seal；
The pair of deep groove ball bearing be positioned over in the bearing block of waterway one；
The bearing gland is used to position deep groove ball bearing, and with waterway to be bolted；
The pump shaft is connect using shaft coupling to transmit torque with motor；
The fused salt liquid that high temperature is sealed using the crenels seal axle sleeve uses material identical with pump shaft to be made,
And it, without the use of additional fixing piece, not only simplifies structure using interference fit between pump shaft and also avoids to pump shaft knot
The influence of structure intensity.Axle sleeve outer rim is carved with equilateral triangle sawtooth, and is also carved with equilateral triangle sawtooth in pedestal adjacent position,
Since fused-salt medium running temperature is up to 700 ~ 1000 DEG C, so high temperature can be born currently without mechanical seal, therefore
First of axial seal of unit does not use additional seal device, but reduces the leakage rate of pump operation by the improvement of structure.
Sawtooth is carved at the cooperation of axle sleeve and pedestal, flow resistance is increased by sawtooth, achievees the purpose that reduce unit leakage rate.This
Item is configured as first of axle envelope, good sealing effect can be played to high-temperature molten salt, while being avoided that high-temperature molten salt to the pump housing
The destruction of part.
The parts such as pump shaft, axle sleeve, mechanical seal, bearing are cooled down using the waterway.The inlet opening of side can be passed through
To waterway plus water, and waterway is internally provided with level sensing probe.The waterway can also be collected micro close from sawtooth
The high-temperature molten salt leaked at axle sleeve is sealed, and is cooled to room temperature.After waterway liquid level is more than alert locations, water can be passed through
The apopore in cold bottom of chamber portion drains, and facilitates overhaul procedure.Graphite bushing inside waterway is gap-matched with pump shaft.Stone
Black axle sleeve bottom is positioned using collar, there is certain spacing between collar and crenels seal axle sleeve.Graphite bushing surface is rectangle
Zigzag reaches better heat dissipation effect to increase heat dissipation area.Graphite bushing upper end resists mechanical sealing linkage ring, plays positioning
Effect.
The beneficial effects of the utility model：Impeller and guide vane use sectional type design, can be according to actual use party in request
Just impeller and guide vane series are rapidly increased or decreased.Outlet is slightly slanted impeller and traditional diameter is compared in the collocation of spatial guide blade
There is higher hydraulic efficiency to the collocation for going out to flow centrifugal impeller and radial vane.The pump master-plan taken into account sealing performance and
Heat dissipation performance.Crenels seal axle sleeve is sealed as first, and good sealing effect can be played to high-temperature molten salt, is avoided that simultaneously
Destruction of the high-temperature molten salt to Pump Body Parts.And the second level sealing use mechanical seal form and with waterway and graphite shaft
Set integrated design has good heat dissipation performance while simplifying structure.
Description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and detailed description.
Fig. 1 is the installation diagram of single tube vertical long multistage pump for liquid salts；
Fig. 2 is crenels seal axle sleeve；
Fig. 3 is waterway and its inner body；
Reference sign:
Water-inlet horn 1, impeller 2, spatial guide blade 3, pump shaft 4, guide bearing 5, pedestal 6, crenels seal axle sleeve 7, waterway 8,
Graphite bushing 9, mechanical seal 10, deep groove ball bearing 11, bearing gland 12, shaft coupling 13, motor 14.
Specific implementation mode
Fig. 1 shows a kind of embodiment of single tube vertical long multistage fused salt pump configuration of the utility model, the structure packet
Include water-inlet horn 1, impeller 2, spatial guide blade 3, pump shaft 4, guide bearing 5, pedestal 6, crenels seal axle sleeve 7, waterway 8, graphite shaft
Set 9, mechanical seal 10, deep groove ball bearing 11, bearing gland 12, shaft coupling 13, motor 14.
The multistage pump for liquid salts uses sectional type structure.Including water-inlet horn 1, impeller 2, spatial guide blade 3, pump shaft 4, guide bearing
5, pedestal 6, crenels seal axle sleeve 7, waterway 8, graphite bushing 9, mechanical seal 10, deep groove ball bearing 11, bearing gland 12,
Shaft coupling 13, motor 14；
Impeller 2 is fixed on by axle sleeve, keyway series connection on pump shaft 4, mutual with bolt between water-inlet horn 1, spatial guide blade 3
Connection.The series of impeller and spatial guide blade can be increased or decreased according to actual needs；
Two pieces of guide bearings 5 are positioned between final stage guide vane and pedestal 6；
Pedestal 6 uses integral cast with water outlet；
Crenels seal axle sleeve 7 is with pump shaft 4 using interference fit；
Graphite bushing 9 is placed in the waterway 8.Lower end is positioned using collar, and upper end resists the mechanical seal (10)；
A pair of of deep groove ball bearing 11 be positioned over in the bearing block of waterway one；
Bearing gland 12 is used to position deep groove ball bearing 11, and with waterway 8 to be bolted；
Pump shaft 4 is connect using shaft coupling 13 to transmit torque with motor 14；
As shown in Fig. 2, sealing the fused salt liquid of high temperature using the crenels seal axle sleeve 7, use identical as pump shaft 4
Material be made, and between pump shaft 4 using interference fit.Its outer rim of axle sleeve 7 is carved with equilateral triangle sawtooth, and in pedestal
6 adjacent positions are also carved with equilateral triangle sawtooth.This is configured as first of axle envelope, can be played to high-temperature molten salt good close
Effect is sealed, while being avoided that destruction of the high-temperature molten salt to Pump Body Parts.
As shown in figure 3, cooling down pump shaft 4, graphite bushing 9, mechanical seal 10, bearing 11 etc. zero using the waterway 8
Part.It adds water by the inlet opening of side to waterway, and is internally provided with level sensing probe.The waterway 8 can also be received
Collect the micro high-temperature molten salt leaked from crenels seal axle sleeve, and is cooled to room temperature.When 8 liquid level of waterway is more than warning
Behind position, it can be drained by the apopore of waterway bottom, facilitate overhaul procedure.Graphite bushing 9 inside waterway 8 with
Pump shaft 4 is gap-matched.9 bottom of graphite bushing using collar position, have between collar and crenels seal axle sleeve it is certain between
Away from.9 surface of graphite bushing is rectangular saw-tooth shape, reaches better heat dissipation effect to increase heat dissipation area.9 upper end of graphite bushing is supported
Firmly 10 rotating ring of mechanical seal, plays positioning action.
The above is only presently preferred embodiments of the present invention, is not imposed any restrictions to the present invention, every according to the present invention
Technical spirit changes any simple modification, change and equivalent structure made by above example, still falls within skill of the present invention
In the protection domain of art scheme.
Claims (3)
1. a kind of single tube vertical long multistage pump for liquid salts, which is characterized in that including water-inlet horn (1), impeller (2), spatial guide blade
(3), pump shaft (4), guide bearing（5）Two pieces, pedestal (6), crenels seal axle sleeve (7), waterway (8), graphite bushing (9), machinery
It seals (10), deep groove ball bearing（11）A pair, bearing gland (12), shaft coupling (13), motor (14)；
The multistage pump for liquid salts uses sectional type structure；
The impeller (2) is fixed on by axle sleeve, keyway series connection on the pump shaft (4), the water-inlet horn (1), spatial guide blade
(3) it is connected with each other with bolt between；
Two pieces of guide bearings (5) are positioned between final stage guide vane and pedestal (6)；
The pedestal (6) uses integral cast with water outlet；
The crenels seal axle sleeve (7) is with pump shaft (4) using interference fit；
The graphite bushing (9) is placed in the waterway (8), and lower end is positioned using collar, and upper end resists the mechanical seal
(10)；
The pair of deep groove ball bearing (11) be positioned over in the bearing block of waterway one；
The bearing gland (12) is used to position deep groove ball bearing (11), and with waterway (8) to be bolted；
The pump shaft (4) is connect using shaft coupling (13) to transmit torque with motor (14).
2. a kind of single tube vertical long multistage pump for liquid salts according to claim 1, it is characterized in that：Using the crenels seal
Axle sleeve (7) seals the fused salt liquid of high temperature, uses the material identical with pump shaft to be made, and interference is used between pump shaft
Cooperation, its outer rim of axle sleeve is carved with equilateral triangle sawtooth, and is also carved with equilateral triangle sawtooth in pedestal adjacent position.
3. a kind of single tube vertical long multistage pump for liquid salts according to claim 1, it is characterized in that：Using the waterway
(8) pump shaft, axle sleeve, mechanical seal, bearing parts are cooled down, water is added to waterway by the inlet opening of side, and internal
Equipped with level sensing probe, which can also collect the micro high-temperature molten salt leaked from crenels seal axle sleeve, and will
It is cooled to room temperature, and after waterway liquid level is more than alert locations, can be drained by the apopore of waterway bottom, waterway
Internal graphite bushing is gap-matched with pump shaft, and graphite bushing bottom is positioned using collar, collar and crenels seal axle sleeve
Between have certain spacing, graphite bushing surface is rectangular saw-tooth shape, and graphite bushing upper end resists mechanical sealing linkage ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721150193.4U CN207660832U (en) | 2017-09-08 | 2017-09-08 | A kind of single tube vertical long multistage pump for liquid salts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721150193.4U CN207660832U (en) | 2017-09-08 | 2017-09-08 | A kind of single tube vertical long multistage pump for liquid salts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207660832U true CN207660832U (en) | 2018-07-27 |
Family
ID=62936976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721150193.4U Active CN207660832U (en) | 2017-09-08 | 2017-09-08 | A kind of single tube vertical long multistage pump for liquid salts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207660832U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837991A (en) * | 2022-05-18 | 2022-08-02 | 济南三科泵业有限公司 | Sealing structure for molten salt pump, mounting method and molten salt pump |
-
2017
- 2017-09-08 CN CN201721150193.4U patent/CN207660832U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837991A (en) * | 2022-05-18 | 2022-08-02 | 济南三科泵业有限公司 | Sealing structure for molten salt pump, mounting method and molten salt pump |
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