CN107503947A - Liquid metal conveying mechanical pump - Google Patents
Liquid metal conveying mechanical pump Download PDFInfo
- Publication number
- CN107503947A CN107503947A CN201710823833.1A CN201710823833A CN107503947A CN 107503947 A CN107503947 A CN 107503947A CN 201710823833 A CN201710823833 A CN 201710823833A CN 107503947 A CN107503947 A CN 107503947A
- Authority
- CN
- China
- Prior art keywords
- pump
- liquid metal
- housing
- pump shaft
- liquid
- 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.)
- Granted
Links
- 229910001338 liquidmetal Inorganic materials 0.000 title claims abstract description 96
- 239000011261 inert gas Substances 0.000 claims abstract description 28
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 38
- 238000001816 cooling Methods 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 238000009413 insulation Methods 0.000 claims description 8
- 239000002826 coolant Substances 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000002310 reflectometry Methods 0.000 claims description 3
- 229910052738 indium Inorganic materials 0.000 claims 1
- 238000004321 preservation Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- 239000002699 waste material Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910001152 Bi alloy Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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
- 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
- F04D7/065—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 for liquid metal
-
- 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
- F04D29/046—Bearings
-
- 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
- F04D29/4266—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps made of sheet metal
-
- 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
- F04D29/588—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling or heating the machine
-
- 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
- F04D29/5893—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps heat insulation or conduction
Landscapes
- 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 provides a kind of liquid metal conveying mechanical pump, including the internal pump housing, pump shaft, impeller, housing, motor and the heater with closing space.The pump housing is provided with the liquid metal inflow entrance communicated with closing space, liquid metal flow export, inert gas entrance and the inert gas outlet being spaced apart from each other；The first end of pump shaft is from the outside of the pump housing in ordinatedly penetrating the pump housing and extend closing space；Impeller is located in closing space and in the first end of pump shaft；Axial direction of the housing along pump shaft fits together with the pump housing；Motor is installed in housing and for driving pump shaft；Heater is used to heat the liquid metal in closing space.Liquid metal conveying mechanical pump of the present invention is by inert gas entrance, inert gas outlet and heater, it is avoided that the liquid metal of conveying is oxidized, liquid metal flows can be improved, so as to improve the stability of liquid metal conveying, reach efficient, stable and economic effect.
Description
Technical field
The present invention relates to delivery pump field, more particularly to a kind of liquid metal conveying mechanical pump.
Background technology
At present, the pump majority for conveying liquid metal is electromagnetic pump, and electromagnetic pump causes electromagnetic pump because of leakage field and body heat production
Energy consumption it is very high, conevying efficiency is very low.Meanwhile electromagnetic pump is during high temperature (300 DEG C of ＞) liquid metal is conveyed, electromagnetic wire
Circle has larger high temperature failure risk.Furthermore electromagnetic pump is in liquid metal course of conveying, the rated head and flow of electromagnetic pump
Relatively low, electromagnetic pump needs to configure complicated electrical system and cause operation difficulty larger, and electromagnetic pump is to by conveying liquid metal electricity
Conductance has higher requirements, and the shutdown process of electromagnetic pump is very numerous and diverse and causes operation difficulty height.
Wherein, for lead-containing alloy (such as lead bismuth alloy), it is the coolant material of forth generation lead base reactor, but
It is that lead-containing alloy has the characteristics that high density, corrosivity and abrasion, there is high requirement to circulating pump.Existing liquid gold
Belong to electromagnetic pump because efficiency is low and using the factor such as less economical, can not meet this requirement.
Certainly, the conveying of the conveying, especially liquid heavy metal to other liquid metals in addition to lead-containing alloy, liquid
Metal electromagnetic pump there is also it is above-mentioned the problem of.
Therefore, it is necessary to designing a kind of efficient, stable and economic liquid metal conveying mechanical pump overcomes drawbacks described above.
The content of the invention
It is an object of the invention to provide a kind of liquid metal conveying mechanical pump efficiently, stably, economic.
To achieve the above object, the invention provides a kind of liquid metal conveying mechanical pump, including：Inside has closing
The pump housing, pump shaft, impeller, housing, motor and the heater in space；The pump housing is provided with being spaced apart from each other with the closing
Liquid metal inflow entrance, liquid metal flow export, inert gas entrance and the inert gas outlet that space communicates；The pump shaft
First end is from the outside of the pump housing in ordinatedly penetrating the pump housing and extend the closing space；The impeller is positioned at described
In closing space and in the first end of the pump shaft；Axial direction of the housing along the pump shaft is assembled in the pump housing
Together, the second end of the pump shaft is in and is ordinatedly placed through on the housing；The motor is installed in the housing and is used for
The pump shaft is driven to go to drive the impeller to rotate in the closing space；The heater is used for the closing space
Interior liquid metal is heated, the heater in circumferentially be arranged on the pump housing outside with the closing space pair
The opening position answered.
It is preferred that one of the liquid metal inflow entrance and the liquid metal flow export are along the axial direction of the pump shaft
Set, the other of the liquid metal inflow entrance and the liquid metal flow export being radially arranged along the pump shaft.
It is preferred that the winged liquid that the liquid metal conveying of the present invention is also included with mechanical pump in the closing space shields
Plate, the winged liquid barricade are arranged on inwall or the pump shaft of the pump housing, and the winged liquid barricade is along the pump shaft
Be axially located between the impeller and the housing.
It is preferred that radial direction of the winged liquid barricade along the pump shaft on the pump housing inwall extend the pump shaft and with the pump
Axle separates a pre-determined distance；Or radial direction of the winged liquid barricade along the pump shaft on the pump shaft extends the inwall of the pump housing
And separate a pre-determined distance with the inwall.
It is preferred that the liquid metal conveying of the present invention also includes the heat shielding group in the closing space with mechanical pump
Part, the heat shield assembly are arranged on inwall or the pump shaft of the pump housing, and the heat shield assembly is along the pump shaft
Be axially located between the impeller and the housing.
It is preferred that the heat shield assembly includes the metal sheet of the high heat reflectivity of at least two layers of low-launch-rate and in not
Regularly fill the tinsel on the metal sheet.
It is preferred that the metal sheet is in dish configuration, the pump shaft is placed through the metal sheet.
It is preferred that the liquid metal conveying mechanical pump of the present invention also includes in the closing space and is sheathed on institute
The upper cooling-part of pump shaft is stated, the cooling-part is axially located between the impeller and housing along the pump shaft, described
Cooling-part is also on the inwall of the pump housing and the position corresponding with the inwall crosses a cooling space, the pump housing
Offer the cooling entrance and coolant outlet that are communicated with the cooling space being spaced apart from each other.
It is preferred that the cooling-part axially has at least two layers stripper loop being separated by out along the pump shaft, own
The cooling space is separated out corresponding cooling space cell by the stripper loop.
It is preferred that the liquid metal conveying of the present invention also includes metallic insulation with mechanical pump and on the pump housing
And the mechanical seal sealed to the perforating position of the pump shaft and the pump housing, the metallic insulation surround the heating dress
Put.
It is preferred that the housing is provided with bearing with penetrating for the pump shaft at cooperation, the bearing includes sliding bearing
And rolling bearing, axial direction of the sliding bearing along the pump shaft and the rolling bearing stagger setting.
Compared with prior art, by the inert gas outlet and inert gas entrance of the present invention, realize first by the pump housing
Air emptying in closing space, then toward persistently injecting inert gas in closing space, it is ensured that it is an anaerobic in closing space
Environment, the liquid metal of conveying is avoided to be oxidized, so as to improve the stability of the liquid metal conveying mechanical pump of the present invention；Together
When, by heater, the closing space of the pump housing is in assigned temperature, so as to improve the mobility of liquid metal, reach high
The effect of effect, the heat waste of liquid metal can also be balanced in the liquid metal conveying mechanical pump running of the present invention, is protected
It is stable to hold system；In addition, go to drive pump shaft and impeller by motor, it is also low and economical with cost for electromagnetic pump
Effect.
Brief description of the drawings
The liquid metal conveying mechanical pump that Fig. 1 is the present invention is illustrated by the internal structure after the axial line cutting of its pump shaft
Figure.
Fig. 2 is the enlarged drawing at the liquid metal conveying mechanical pump A shown in Fig. 1.
Embodiment
In order to describe in detail the present invention technology contents, construction feature, below in conjunction with embodiment and coordinate accompanying drawing make into
One step explanation.
Fig. 1 and Fig. 2 is referred to, liquid metal of the invention conveying mechanical pump 100, which includes inside, has closing space 15
The pump housing 1, pump shaft 2, impeller 3, housing 6, motor 4 and heater 5.The pump housing 1 is provided be spaced apart from each other and closing space
The 15 liquid metal inflow entrances 11 communicated, liquid metal flow export 12, inert gas entrance 13 and inert gas outlet 14；Specifically
Ground, in the present embodiment, liquid metal inflow entrance 11 are axially arranged along pump shaft 2, footpath of the liquid metal flow export 12 along pump shaft 2
To setting, more conducively liquid metal conveys；Certainly, in other embodiments, can be by footpath of the liquid metal inflow entrance 11 along pump shaft 2
To setting, by liquid metal flow export 12 along the axially arranged of pump shaft 2, therefore it is not limited.Wherein, in the liquid gold of the present invention
When category conveying is worked with mechanical pump 100, inert gas entrance 13 is connected with extraneous voltage-stablizer (not shown), by extraneous voltage stabilizing
Device provides inert gas for inertia sealing gland, inert gas is entered from inert gas entrance 13, and keeps the internal pressure of closing space 15
The stabilization of power；And inert gas outlet 14 is used to discharge in closing space 15 before liquid metal conveying mechanical pump 100 starts
Air, it is closed after liquid metal conveying is started with mechanical pump 100, so as to be provided for the liquid metal in the pump housing 1
Inert environments, high-temperature oxydation is avoided, also act as and keep pressure balanced effect in the pump housing 1.
As shown in figure 1, the first end of pump shaft 2 from the outside of the pump housing 1 in ordinatedly penetrating the pump housing 1 and extend closing space
15, impeller 3 is located in closing space 15 and in the first end of pump shaft 2；For example, the pump housing 1, impeller 3 and pump shaft 2 are adopted
With corrosion-resistant material, for example, material is stainless steel, stainless steel model 316,316L, 317L or 904L, but be not exemplified as with this
Limit.Axial direction of the housing 6 along pump shaft 2 fits together with the pump housing 1, and the second end of pump shaft 2 is in ordinatedly to be placed through on housing 6, by
Housing 6 provides pump shaft 2 support firm effect.Motor 4 is installed in housing 6 and for driving pump shaft 2 to go impeller 3 sealing
Close in space 15 and rotate, realize the conveying to liquid metal.Heater 5 is used to carry out the liquid metal in closing space 15
Heating, heater 5 in circumferentially be arranged on the pump housing 1 outside with 15 corresponding opening position of closing space, be closing space 15
Heat is provided；For example, in the present embodiment, the selection of heater 5 is heater strip or heating tube, in order to heater 5
It is looped around at the outside of the pump housing 1, but is not limited.Wherein, it is defeated in the liquid metal for starting the present invention by heater 5
Send with being used to the closing space 15 of the pump housing 1 being heated to assigned temperature before mechanical pump 100, improve the mobility of liquid metal with up to
To efficient effect, and in the liquid metal conveying heat waste that liquid metal is balanced in the running of mechanical pump 100, holding system
It is stable；Meanwhile before liquid metal conveying mechanical pump 100 starts and running in, the liquid metal in closing space 15
Impeller 3 should be flooded so that real liquid metal is more reliably conveyed into closing space 15 by impeller 3 by liquid metal inflow entrance 11,
Discharged again by liquid metal flow export 12.It is more specifically, as follows：
As shown in figure 1, the liquid metal conveying of the present invention also includes metallic insulation 20 with mechanical pump 100, installed in pump
The mechanical seal 10 that is sealed on body 1 and to the perforating position of pump shaft 2 and the pump housing 1, the winged liquid in closing space 15 shield
Plate 7, the heat shield assembly 8 in closing space 15, in the closing space 15 and the cooling-part 9 that is sheathed on pump shaft 2.
Fly liquid barricade 7 to install on pump shaft 2, and fly being axially located between impeller 3 and housing 6 along pump shaft 2 of liquid barricade 7, with by
Fly liquid barricade 7, it is maskable due to splashing and by the high temperature fluent metal in gap between pump shaft 2 and the pump housing 1, avoid what is splashed
High temperature fluent metal is caused damage to liquid metal conveying with other components of mechanical pump 100；Certainly, incited somebody to action according to being actually needed
Fly liquid barricade 7 and be installed on the inwall of the pump housing 1, therefore be not limited；For example, in the present embodiment, the winged liquid on pump shaft 2
Radial direction of the barricade 7 along pump shaft 2 extends the inwall of the pump housing 1 and separates a pre-determined distance with the inwall, such as the pre-determined distance is 2
To 10 millimeters, the high temperature fluent metal of splashing is on the one hand effectively shielded, is on the other hand avoided that winged liquid barricade 7 with pump shaft 2
Inwall during rotation with the pump housing 1 collides, and so as to cause the pump housing 1 and winged liquid barricade 7 to damage, and then it is defeated to influence liquid metal
Send and worked with mechanical pump 100.It will be appreciated that when winged liquid barricade 7 is installed on the inwall of the pump housing 1, in the pump housing 1 now
Radial direction of the winged liquid barricade 7 along pump shaft 2 on wall extends pump shaft 2 and separates foregoing pre-determined distance with the pump shaft 2, can equally keep away
Exempt to collide with winged liquid barricade 7 when pump shaft 2 rotates, so as to cause pump shaft 2 and winged liquid barricade 7 to damage.
As shown in figure 1, heat shield assembly 8 is arranged on the inwall of the pump housing 1, and being axially located along pump shaft 2 of heat shield assembly 8
Between impeller 3 and housing 6, to go to reduce axial heat waste by heat shield assembly 8, it is ensured that temperature loss speed in closing space 15
Degree；Certainly, heat shield assembly 8 is arranged on pump shaft 2 according to being actually needed, therefore be not limited.Specifically, in this implementation
In example, axial direction of the heat shield assembly 8 along pump shaft 2 is also located at flying between liquid barricade 7 and housing 6, and the purpose so designed is first
The liquid metal of splashing is shielded by flying liquid barricade 7, the liquid metal for preventing from splashing sticks at heat shield assembly 8 and influenceed
To the heat shielding effect of heat shield assembly 8；Preferably it is that heat shield assembly 8 includes the high heat reflectivity of at least two layers of low-launch-rate
Metal sheet 81 and in the tinsel 82 being filled irregularly on metal sheet 81, to cause the heat shielding of heat shield assembly 8 to imitate
Fruit is more preferable；For example, metal sheet 81 is in dish configuration, and pump shaft 2 is placed through metal sheet 81, can more reduce the axle of pump shaft 2
To heat waste, but it is not limited.
As shown in Figures 1 and 2, being axially located between impeller 3 and housing 6 along pump shaft 2 of cooling-part 9, is preferably cold
But being axially located between heat shield assembly 8 and housing 6 along pump shaft 2 of part 9, the purpose so designed are both to have reached control pump shaft
While 2 temperature, moreover it is possible to reduce the influence of closing space 15；Cooling-part 9 is also on the inwall of the pump housing 1 and interior with this
The corresponding position of wall crosses a cooling space 91, the pump housing 1 offer be spaced apart from each other with the cooling identical of space 91 cooling
Entrance 92 and coolant outlet 93；Therefore in use, realize cooling water in cooling space by cooling entrance 92 and coolant outlet 93
Circulation conveying in 91, so as to more reliably control the temperature of pump shaft 2；For example, as shown in Fig. 2 cooling-part 9 is along pump shaft 2
Axial direction have to two layers of stripper loop 94 being separated by out, two layers of stripper loop 94 is separated out three layers of cooling by space 91 is cooled down
Space cell, three layers of cooling space cell communicate at the inwall of the pump housing 1, extend cooling water flow to by cooling entrance 92 it is cold
But the time of outlet 93, cooling effect is further improved；Certainly, axle of the cooling-part 9 along pump shaft 2 is made according to being actually needed
To with three layers, four layers or five layers stripper loop 94 not etc., it is corresponding obtained by cooling space cell be four layers, five layers or six
Layer, therefore be not limited；Preferably it is, as shown in Fig. 2 cooling entrance 92 is arranged with coolant outlet 93 in heteropleural, more effectively
Extend the time that cooling water is flow to coolant outlet 93 by cooling entrance 92.
As shown in figure 1, metallic insulation 20 surrounds heater 5, to be incubated to heat caused by heater 5,
Reduce the speed of thermal loss；For example, metallic insulation 20 is metallic reflection formula heat-insulation layer, for being incubated for the pump housing 1, tool
There is high insulating effect, easy to disassemble, recyclable the advantages that recycling, and mechanical seal 10 is inertia sealing gland, heat shield component
Working environment is closed Deng offer.
As shown in figure 1, housing 6 is provided with bearing 30 with penetrating at cooperation for pump shaft 2, bearing 30 is used to fix pump shaft 2, and
The footpath load of pump shaft 2 is carried, meanwhile, ensure that pump shaft 2 can only realize rotation, and reduce the coefficient of friction in the rotation process of pump shaft 2.Tool
Body, in the present embodiment, bearing 30 includes sliding bearing 301 and rolling bearing 302, axial direction of the sliding bearing 301 along pump shaft 2
With the stagger setting of rolling bearing 302, ensure pump shaft 2 in the course of the work can steady, without friction and noise phenomena such as.
It is worth noting that, in other embodiments, liquid metal conveying of the invention is with mechanical pump 10 according to actual need
Will and including one in metallic insulation 20, mechanical seal 10, winged liquid barricade 7, heat shield assembly 8 and cooling-part 9 five,
The two, three or four, therefore be not limited with above-mentioned citing.
With reference to accompanying drawing, the liquid metal conveying to the present invention is illustrated with the operation principle of mechanical pump：To convey liquid
Exemplified by lead-containing alloy, in liquid metal conveying mechanical pump 100 of the invention first before use, should be first empty by the closing of the pump housing 1
Between air emptying in 15；Inert gas outlet 14 is opened, is vacuumized the closing space 15 of the pump housing 1 with vavuum pump；Then lead to
Inert gas entrance 13 is crossed, persistently injects inert gas, the closing space 15 of the pump housing 1 is purged, specific purge time root
Determined according to individual example；After determining that the air in the closing space 15 of the pump housing 1 is discharged substantially, by the pump housing 1 and closed using heater 5
Metal temperature in space 15 is promoted to more than fusing point, and is kept for the long period, it is therefore an objective to determines that the internal temperature of the pump housing 1 reaches
It is required that and make in the pump housing 1 without solid-state lead-containing alloy, thus the stuck of impeller 3 will not be caused.In heating process, pass through adjustment
Into the water of cooling entrance 92, in rational scope, actual temp scope should moisten the control temperature of pump shaft 2 according to actual choose
Lubricating oil heat resistance determines.It is determined that the liquid lead-containing alloy loop being connected with liquid metal conveying mechanical pump 100 is unimpeded, return
After lead-containing alloy in road is liquid, liquid metal conveying mechanical pump 100 can be opened.Liquid metal conveying mechanical pump
After 100 start, you can realize that high density liquid lead-containing alloy conveys；In course of conveying, due to inert gas entrance 13 and outside
Boundary's voltage-stablizer is connected, and liquid level has smaller normal fluctuation in the pump housing 1.Stop liquid metal conveying every time and use mechanical pump 100, Ying Xian
Stop motor 4, then inert gas entrance 13 is connected with booster pump, the liquid metal in the pump housing 1 is depressed into steady pressure of system device
It is interior, avoid the stress in cooling procedure from damaging impeller 3 or other parts.After shutdown, the pump housing 1 answers slow cooling to environment temperature.
The person of being worth noting, liquid metal of the invention conveying after mounting, should ensure that the liquid of liquid metal in the pump housing 1 with mechanical pump 100
Position is close with the liquid level of steady pressure of system device (not shown)；The liquid metal conveying of the present invention after use, is answered with mechanical pump 100
Do long term maintenance；Specially inert gas entrance 13 is connected with inertia source of the gas, makes the inside of the pump housing 1 is long-term to keep inert gas ring
Border, avoid oxidation stain.
Compared with prior art, by the inert gas outlet 14 and inert gas entrance 13 of the present invention, realize first by pump
Air emptying in the closing space 15 of body 1, then toward persistently injecting inert gas in closing space 15, it is ensured that in closing space 15
For an oxygen-free environment, the liquid metal of conveying is avoided to be oxidized, so as to improve the liquid metal conveying mechanical pump of the present invention
100 stability；Meanwhile by heater 5, the closing space 15 of the pump housing is set to be in assigned temperature, so as to improve liquid gold
The mobility of category, reach efficient effect, can also be put down in the running of liquid metal conveying mechanical pump 100 of the present invention
The heat waste of weighing apparatus liquid metal, keep system stable；In addition, going to drive pump shaft 2 and impeller 3 by motor 4, come with respect to electromagnetic pump
Say, also with the low and economic effect of cost.
Above disclosed is only the preferred embodiments of the present invention, it is impossible to the interest field of the present invention is limited with this,
Therefore the equivalent variations made according to the claims in the present invention, the scope that the present invention is covered is belonged to.
Claims (11)
- A kind of 1. liquid metal conveying mechanical pump, it is characterised in that including：Inside has the pump housing of closing space, and the pump housing is provided with the liquid communicated with the closing space being spaced apart from each other Metal inflow entrance, liquid metal flow export, inert gas entrance and inert gas outlet；Pump shaft, the first end of the pump shaft is from the outside of the pump housing in ordinatedly penetrating the pump housing and to extend the closing empty Between；Impeller, the impeller are located in the closing space and in the first end of the pump shaft；Housing, axial direction of the housing along the pump shaft fit together with the pump housing, and the second end of the pump shaft is in cooperation Ground is placed through on the housing；Motor, it is installed in the housing and drives the impeller to turn in the closing space for driving the pump shaft to go It is dynamic；AndFor the heater heated to the liquid metal in the closing space, the heater is in circumferentially to install Opening position corresponding with the closing space outside the pump housing.
- 2. liquid metal conveying mechanical pump according to claim 1, it is characterised in that the liquid metal inflow entrance and One of described liquid metal flow export is golden along the axially arranged of the pump shaft, the liquid metal inflow entrance and the liquid Belong to the other of flow export being radially arranged along the pump shaft.
- 3. liquid metal conveying mechanical pump according to claim 1, it is characterised in that also include empty positioned at the closing Interior winged liquid barricade, the winged liquid barricade is arranged on inwall or the pump shaft of the pump housing, and the winged liquid screen Shield plate is axially located between the impeller and the housing along the pump shaft.
- 4. liquid metal conveying mechanical pump according to claim 3, it is characterised in that the winged liquid on the pump housing inwall Radial direction of the barricade along the pump shaft extends the pump shaft and separates a pre-determined distance with the pump shaft；Or fly on the pump shaft Radial direction of the liquid barricade along the pump shaft extends the inwall of the pump housing and separates a pre-determined distance with the inwall.
- 5. liquid metal conveying mechanical pump according to claim 1, it is characterised in that also include empty positioned at the closing Interior heat shield assembly, the heat shield assembly is arranged on inwall or the pump shaft of the pump housing, and the heat shielding Component is axially located between the impeller and the housing along the pump shaft.
- 6. liquid metal conveying mechanical pump according to claim 5, it is characterised in that the heat shield assembly is included extremely Lack the metal sheet of two layers of the high heat reflectivity of low-launch-rate and in the tinsel being filled irregularly on the metal sheet.
- 7. liquid metal conveying mechanical pump according to claim 6, it is characterised in that the metal sheet is in dish-type knot Structure, the pump shaft are placed through the metal sheet.
- 8. liquid metal conveying mechanical pump according to claim 1, it is characterised in that also include empty positioned at the closing In and be sheathed on the upper cooling-part of the pump shaft, the cooling-part along the pump shaft be axially located the impeller with Between housing, the cooling-part is also on the inwall of the pump housing and the position corresponding with the inwall crosses a cooling Space, the pump housing offer the cooling entrance and coolant outlet that are communicated with the cooling space being spaced apart from each other.
- 9. liquid metal conveying mechanical pump according to claim 8, it is characterised in that the cooling-part is along the pump Axle axially has at least two layers stripper loop being separated by out, and the cooling space is separated out accordingly by all stripper loops Cool down space cell.
- 10. liquid metal conveying mechanical pump according to claim 1, it is characterised in that also including metallic insulation and The mechanical seal sealed on the pump housing and to the perforating position of the pump shaft and the pump housing, the metal heat preservation Layer surrounds the heater.
- 11. liquid metal conveying mechanical pump according to claim 1, it is characterised in that the housing and the pump shaft Penetrate bearing be provided with cooperation, the bearing includes sliding bearing and rolling bearing, and the sliding bearing is along the pump shaft Axial direction and the rolling bearing stagger setting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710823833.1A CN107503947B (en) | 2017-09-13 | 2017-09-13 | Mechanical pump for conveying liquid metal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710823833.1A CN107503947B (en) | 2017-09-13 | 2017-09-13 | Mechanical pump for conveying liquid metal |
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| Publication Number | Publication Date |
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| CN107503947A true CN107503947A (en) | 2017-12-22 |
| CN107503947B CN107503947B (en) | 2024-06-11 |
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| CN201710823833.1A Active CN107503947B (en) | 2017-09-13 | 2017-09-13 | Mechanical pump for conveying liquid metal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108626175A (en) * | 2018-03-06 | 2018-10-09 | 江苏大学 | A kind of double heat-insulated heat shield systems for high-temperature pump |
| CN109185164A (en) * | 2018-10-16 | 2019-01-11 | 中国科学院合肥物质科学研究院 | A kind of hermetically sealed liquid metal mechanical pump |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107503947B (en) | 2024-06-11 |
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