CN206352589U - A kind of sealing device for high-temperature molten salt long shaft submerged pump - Google Patents
A kind of sealing device for high-temperature molten salt long shaft submerged pump Download PDFInfo
- Publication number
- CN206352589U CN206352589U CN201621472636.7U CN201621472636U CN206352589U CN 206352589 U CN206352589 U CN 206352589U CN 201621472636 U CN201621472636 U CN 201621472636U CN 206352589 U CN206352589 U CN 206352589U
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- China
- Prior art keywords
- long shaft
- submerged pump
- intervalve
- pump
- shaft submerged
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Abstract
The utility model is related to a kind of sealing device for high-temperature molten salt long shaft submerged pump, it is under the effect of nitrogen, contact of the fused salt with hot box is blocked, the heat for greatly reducing fused salt causes damage to the parts of bearings of long shaft submerged pump so that the utility model can be subjected to the high temperature of 600 DEG C of fused salt.Further, it enables the consumable accessory such as parts of bearings and labyrinth seal is durable in use, so as to reduce replacing number of times, and then financial cost is saved.The utility model is with respect to dry gas seals, and not only structure is relatively easy, and component costs are relatively low, and consumable accessory is not easy to wear, so as to greatly prolong service life.For the sealing of the utility model relative mechanical, can be higher it is resistance to live high temperature and cost is low.In view of above reason, can be widely applied to mechanical field.
Description
Technical field
The utility model is related to mechanical field, is filled especially with regard to a kind of sealing for high-temperature molten salt long shaft submerged pump
Put.
Background technology
High-temperature molten salt long shaft submerged pump is the pump for being specifically used to convey high-temperature molten salt.High-temperature molten salt long shaft submerged pump is in conveying
, it is necessary to be sealed for the axle of long shaft submerged pump during high-temperature molten salt.
At present, the sealing device of high temperature long axis pump for submerged typically uses packing seal, mechanical seal or dry gas seals, machine
Tool sealing does not adapt to higher temperature of molten salt, general 200-300 degree, and sealing effectiveness is general.Although dry gas seals can be applicable
In the temperature of molten salt of 300-400 degree, but complicated, expensive and consumable accessory is more, therefore service life is also than relatively low,
Have a strong impact on the application and popularization for being sealed in long shaft submerged pump.
The content of the invention
The utility model is in order to solve the deficiencies in the prior art, and the purpose of this utility model is to provide one kind and is used for
The sealing device of high-temperature molten salt long shaft submerged pump, it is simple in construction, service life length and good sealing effect.
To reach above-mentioned purpose, the utility model mainly provides following technical scheme：One kind is used for high-temperature molten salt long-shaft liquid
The sealing device of lower pump, it is arranged between long shaft submerged pump middle (center) bearing part and support tube, and is located on pump shaft, its feature
It is：It includes hot box, seal pipe and slide bearing assembly；Wherein, the hot box is worn below the parts of bearings
It is located on the pump shaft, the hot box is to have some heat emission holes in an annular casing, the annular casing circumference；It is described heat-insulated
The bottom of case is provided with sealing plate, the pump shaft of the sealing plate upper surface be provided with outside labyrinth ring, the labyrinth ring and
Heat-barrier material is set between the heat-insulated chamber interior wall, and the heat-barrier material upper end is provided with pressing plate；The upper end of the seal pipe is consolidated
Surely connect the lower surface of the sealing plate, and the sealed tube is located on the pump shaft, the lower end of the seal pipe with it is described
Support tube is fixedly connected；The seal pipe includes intervalve and exterior tube；The intervalve interval is set on the pump shaft, institute
Exterior tube interval is stated to be set on the intervalve, and the upper end of the intervalve and the upper end of the exterior tube are fixedly connected with
In the lower surface of the sealing plate；The slide bearing assembly includes plain bearing housing, axle bush and axle sleeve；Wherein, it is described to slide
Bearing block is annular, and the plain bearing housing upper port has upper edge, and the upper end on the upper edge is fixedly connected with the intervalve
Lower end；The endoporus on the upper edge and the pump shaft shape of long shaft submerged pump match, the outer wall of the plain bearing housing with
The outer diameter of the intervalve is consistent；One end of the circumferentially fixed some brace rods of connection of plain bearing housing, the support
The other end of muscle is fixedly connected with the inner tubal wall of the exterior tube；The axle is arranged with the pump shaft in the plain bearing housing
The axle sleeve is provided with outside lining, the axle bush, and there are convex annular edge, the convex annular edge and the sliding axle in the axle sleeve lower end
Bearing is connected；The seal pipe sets gradually nitrogen tube, long shaft submerged pump drain pipe and fused salt overflow pipe from top to bottom；The nitrogen
Tracheae connects the intervalve through the exterior tube；The long shaft submerged pump drain pipe connects the exterior tube；The fused salt
Overflow pipe connects the intervalve through the exterior tube；The lower section of the sealing plate, outside, the described nitrogen of the pump shaft
Pipe, the fused salt overflow pipe and the plain bearing housing it is described on along forming annular seal space between top.
The heat emission hole is circular or square.
The heat-barrier material uses nanometer micropore heat-barrier material or fibrous ceramic insulation.
Setting inlet valve at suction flange, the suction flange is provided with outside the nitrogen tube.
Outlet(discharge) flange, the outlet(discharge) flange external connection pipeline are provided with outside the long shaft submerged pump drain pipe.
The utility model is due to taking above technical scheme, and it has advantages below：The utility model was operated in rotating shaft
Cheng Zhong, fused salt enters exterior tube, and is flowed out from long shaft submerged pump drain pipe；Small part fused salt enters close by slide bearing assembly
Chamber is sealed, one side slide bearing assembly reduces the pressure of annular seal space, and another aspect slide bearing assembly makes rotating shaft smooth running can
Lean on, while the also mistake large deflection and radial run-out produced by constraint rotating shaft, reduces vibrations and the mechanical loss of long shaft submerged pump.
The nitrogen of certain pressure is poured from the suction flange of nitrogen tube to annular seal space, fused salt has certain pressure, the nitrogen set above
The nitrogen that tracheae enters, now nitrogen has certain pressure, and does not have pressure outside fused salt overflow pipe, therefore in the pressure of nitrogen
Under power effect, fused salt is outflowed back in fused salt hermetically sealed can from fused salt overflow pipe, prevents from causing fused salt to waste.In said process,
Under the effect of nitrogen, contact of the fused salt with hot box is blocked, greatly reduces bearing portion of the heat to long shaft submerged pump of fused salt
Part causes damage so that the utility model can be subjected to the high temperature of 600 DEG C of fused salt.Further, it enables parts of bearings and labyrinth seal
It is durable in use Deng consumable accessory, so as to reduce replacing number of times, and then save financial cost.The utility model is with respect to dry gas seals, no
But structure is relatively easy, component costs are relatively low, and consumable accessory is not easy to wear, so as to greatly prolong service life.This practicality is new
For the sealing of type relative mechanical, can be higher it is resistance to live high temperature and cost is low.In view of above reason, can be widely applied to mechanical neck
Domain.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is single unit system schematic diagram of the present utility model；
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
As shown in figure 1, a kind of sealing device for high-temperature molten salt long shaft submerged pump, it is arranged on long shaft submerged pump axis
Bearing portion part 1 (construction of parts of bearings 1 be prior art, it is all identical in mechanical seal and dry gas seals, thus no longer be described in detail) and
Between support tube 2, and it is located on pump shaft 3, it includes hot box 4, seal pipe 5 and slide bearing assembly 6.
Wherein, hot box 4 is located on pump shaft 3 in the lower section of parts of bearings 1, and hot box 4 is an annular casing, the casing
There are some heat emission holes 401, for the heat that sheds in circumference.The bottom of hot box 4 is provided with sealing plate 7, the upper end of sealing plate 7
The pump shaft 3 in face is provided with labyrinth ring 402, and heat-barrier material 403, heat-insulated material are set between the outside of labyrinth ring 402 and the inwall of hot box 4
Expect that 403 upper ends are provided with pressing plate 404, for compressing heat-barrier material 403.
In above-described embodiment, heat emission hole 401 can not limited herein using including but not limited to circular or square.
In above-described embodiment, heat-barrier material 403 can be using including but not limited to nanometer micropore heat-barrier material or ceramics
Fibrous insulating material, is not limited herein.
The lower surface of the upper end fixed connection and sealing plate 7 of seal pipe 5, and seal pipe 5 is set on pump shaft 3, seal pipe 5
Lower end is fixedly connected with support tube 2.
Seal pipe 5 includes intervalve 501 and exterior tube 502, and the interval of intervalve 501 is set on pump shaft 3, exterior tube 502
Interval is set on intervalve 501, and the upper end of intervalve 501 and the upper end of exterior tube 502 are fixedly connected with sealing plate 7
Lower surface.
Slide bearing assembly 6 includes plain bearing housing 601, axle bush 602 and axle sleeve 603.
Wherein, plain bearing housing 601 is annular, the upper port of plain bearing housing 601 have on along 6011, and on along 6011
Upper end is fixedly connected with the lower end of intervalve 501；On match along 6011 endoporus and the shape of pump shaft 3 of long shaft submerged pump, slide
The outer wall of bearing block 601 is consistent with the outer diameter of intervalve 501.
One end of the circumferentially fixed some brace rods 8 of connection of plain bearing housing 601, the other end of brace rod 8 is fixedly connected outside
The inner tubal wall of portion's pipe 502.
It is arranged with pump shaft 3 in plain bearing housing 601 outside axle bush 602, axle bush 602 and is provided with axle sleeve 603, and axle sleeve
There is convex annular 603 lower ends along 6031, and the convex annular is connected along 6031 with plain bearing housing 601.Plain bearing housing 601, axle bush 602
Slide bearing assembly 6 is constituted with axle sleeve 603, slide bearing assembly 6 is that can be achieved using existing fluid friction bearing, therefore no longer detailed
State.Using slide bearing assembly 6 smooth running of pump shaft 3 can be made reliable, at the same also the mistakes large deflection produced by constraint pump shaft 3 with
Radial run-out, reduces vibrations and the mechanical loss of long shaft submerged pump.
Seal pipe 5 sets gradually nitrogen tube 9, long shaft submerged pump drain pipe 10 and fused salt overflow pipe 11 from top to bottom；Nitrogen
Pipe 9 connects intervalve 501 through exterior tube 502；Long shaft submerged pump drain pipe 10 connects exterior tube 502；Fused salt overflow pipe 11 is worn
Cross the connection intervalve 501 of exterior tube 502.Lower section, the outside of pump shaft 3, nitrogen tube 9, fused salt overflow pipe 11 and the slip of sealing plate 7
On bearing block 601 annular seal space 12 is formed along between 6011 tops.Can also be in fused salt flow process using slide bearing assembly 6
The pressure of middle reduction annular seal space 12, so as to reduce the damage to intervalve 501.
In above-described embodiment, it is provided with outside nitrogen tube 9 at suction flange 13, suction flange 13 and inlet valve is set (in figure
It is not shown), the nitrogen amount for entering annular seal space 12 is adjusted by inlet valve (not shown).
In above-described embodiment, it is provided with outside outlet(discharge) flange 14, outlet(discharge) flange 14 and connects outside long shaft submerged pump drain pipe 10
Adapter road (not shown), conveys fused salt.
When long shaft submerged pump works：
First, before motor starts running, the nitrogen inlet valve (not shown) of long shaft submerged pump is opened, nitrogen is passed through
Gas；
Then, motor is started, long shaft submerged pump operating, fused salt enters from suction casing entrance, and centrifugation is utilized by first stage impeller
Fused salt is driven into chopped-off head blower inlet casing by power effect, and then fused salt flows to secondary impeller, recycles the centrifugal action of secondary impeller
Fused salt is driven into secondary blower inlet casing, recycles secondary impeller centrifugal action that fused salt is driven into next blower inlet casing,
By that analogy, then fused salt is flowed in support tube from last blower inlet casing, the effect of pressure, and fused salt, which is carried over, to be axially pushed,
Until flow direction outlet.
Finally, when terminating operation, first motor is cut off, nitrogen valve is turned off.
During utility model works：
In the operation process of rotating shaft 2, fused salt enters exterior tube 502, and is flowed out from long shaft submerged pump drain pipe 10；Small part
Fused salt enters annular seal space 12 by slide bearing assembly 6, and one side slide bearing assembly 6 reduces the pressure of annular seal space 12, another
Aspect slide bearing assembly 6 makes the smooth running of pump shaft 3 reliable, while mistake large deflection also produced by constraint pump shaft 3 and radial direction circle
Bounce, reduces vibrations and the mechanical loss of long shaft submerged pump.A level pressure is poured from the suction flange 13 of nitrogen tube 9 to annular seal space 12
The nitrogen of power, fused salt has certain pressure, the nitrogen that the nitrogen tube 9 set above enters, and now nitrogen is that have certain pressure
, and the no pressure in the outside of fused salt overflow pipe 11, therefore under the pressure effect of nitrogen, fused salt flows out back from fused salt overflow pipe 11
To in fused salt hermetically sealed can, prevent from causing fused salt to waste.In said process, under the effect of nitrogen, fused salt and hot box 4 are blocked
Contact, the heat for greatly reducing fused salt causes damage to the parts of bearings 1 of long shaft submerged pump so that the utility model can be through
By 600 DEG C of high temperature of fused salt.Further, it enables parts of bearings 1 and the grade consumable accessory of labyrinth ring 402 are durable in use, so as to reduce replacing
Number of times, and then save financial cost.The utility model is with respect to dry gas seals, and not only structure is relatively easy, and component costs are relatively low, and
And consumable accessory is not easy to wear, so as to greatly prolong service life.The utility model relative mechanical sealing for, can be higher it is resistance to live
High temperature and cost is low.
In above-described embodiment, fused salt can also be substituted for other any media.
It is described above, embodiment only of the present utility model, but protection domain of the present utility model do not limit to
In this, any one skilled in the art can readily occur in change in the technical scope that the utility model is disclosed
Or replace, it should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with the power
The protection domain that profit is required is defined.
Claims (7)
1. a kind of sealing device for high-temperature molten salt long shaft submerged pump, it be arranged on long shaft submerged pump middle (center) bearing part (1) and
Between support tube (2), and it is located on pump shaft (3), it is characterised in that：It includes hot box (4), seal pipe (5) and sliding axle
Bearing assembly (6)；
Wherein, the hot box (4) is located in below the parts of bearings (1) on the pump shaft (3), the hot box
(4) it is an annular casing, there are some heat emission holes (401) in the annular casing circumference；The bottom of the hot box (4) is provided with
Sealing plate (7), the pump shaft (3) of sealing plate (7) upper surface is provided with labyrinth ring (402), and the labyrinth ring (402) is outside
Heat-barrier material (403) is set between portion and the hot box (4) inwall, and heat-barrier material (403) upper end is provided with pressing plate
(404)；
The upper end of the seal pipe (5) is fixedly connected with the lower surface of the sealing plate (7), and the seal pipe (5) is set in institute
State on pump shaft (3), the lower end of the seal pipe (5) is fixedly connected with the support tube (2)；
The seal pipe (5) includes intervalve (501) and exterior tube (502)；Intervalve (501) interval is set in the pump
On axle (3), the exterior tube (502) interval is set on the intervalve (501), and the upper end of the intervalve (501) and
The upper end of the exterior tube (502) is fixedly connected with the lower surface of the sealing plate (7)；
The slide bearing assembly (6) includes plain bearing housing (601), axle bush (602) and axle sleeve (603)；
Wherein, the plain bearing housing (601) is annular, and plain bearing housing (601) upper port has upper edge (6011), and
The upper end of the upper edge (6011) is fixedly connected with the lower end of the intervalve (501)；The endoporus and major axis of the upper edge (6011)
The pump shaft (3) shape of submerged pump matches, and the outer wall of the plain bearing housing (601) is outer with the intervalve (501)
Wall diameter is consistent；One end of the circumferentially fixed some brace rods (8) of connection of plain bearing housing (601), the brace rod (8)
The other end is fixedly connected with the inner tubal wall of the exterior tube (502)；Covered on the pump shaft (3) in the plain bearing housing (601)
Provided with the axle bush (602), the axle sleeve (603) is provided with outside the axle bush (602), and there is ring the axle sleeve (603) lower end
Shape convex edge (6031), the convex annular is connected along (6031) with the plain bearing housing (601)；
The seal pipe (5) sets gradually nitrogen tube (9), long shaft submerged pump drain pipe (10) and fused salt overflow pipe from top to bottom
(11)；The nitrogen tube (9) connects the intervalve (501) through the exterior tube (502)；The long shaft submerged pump drain pipe
(10) exterior tube (502) is connected；The fused salt overflow pipe (11) connects the intervalve through the exterior tube (502)
(501)；The lower section of the sealing plate (7), outside, the described nitrogen tube (9) of the pump shaft (3), the fused salt overflow pipe (11)
Annular seal space (12) is formed between upper edge (6011) top of the plain bearing housing (601).
2. a kind of sealing device for high-temperature molten salt long shaft submerged pump according to claim 1, it is characterised in that：It is described
Heat emission hole (401) is circular or square.
3. a kind of sealing device for high-temperature molten salt long shaft submerged pump according to claim 1, it is characterised in that：It is described
Heat-barrier material (403) uses nanometer micropore heat-barrier material or fibrous ceramic insulation.
4. a kind of sealing device for high-temperature molten salt long shaft submerged pump according to claim 2, it is characterised in that：It is described
Heat-barrier material (403) uses nanometer micropore heat-barrier material or fibrous ceramic insulation.
5. a kind of sealing device for high-temperature molten salt long shaft submerged pump according to claim 1 or 2 or 3 or 4, its feature
It is：Suction flange (13) is provided with outside the nitrogen tube (9), suction flange (13) place sets inlet valve.
6. a kind of sealing device for high-temperature molten salt long shaft submerged pump according to claim 1 or 2 or 3 or 4, its feature
It is：Outlet(discharge) flange (14), outlet(discharge) flange (14) external connection are provided with outside the long shaft submerged pump drain pipe (10)
Pipeline.
7. a kind of sealing device for high-temperature molten salt long shaft submerged pump according to claim 5, it is characterised in that：It is described
Outlet(discharge) flange (14), outlet(discharge) flange (14) the external connection pipeline are provided with outside long shaft submerged pump drain pipe (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621472636.7U CN206352589U (en) | 2016-12-30 | 2016-12-30 | A kind of sealing device for high-temperature molten salt long shaft submerged pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621472636.7U CN206352589U (en) | 2016-12-30 | 2016-12-30 | A kind of sealing device for high-temperature molten salt long shaft submerged pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206352589U true CN206352589U (en) | 2017-07-25 |
Family
ID=59348707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621472636.7U Expired - Fee Related CN206352589U (en) | 2016-12-30 | 2016-12-30 | A kind of sealing device for high-temperature molten salt long shaft submerged pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206352589U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355389A (en) * | 2017-08-18 | 2017-11-17 | 大连深蓝泵业有限公司 | Solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts |
| CN107477019A (en) * | 2017-07-28 | 2017-12-15 | 武汉船用机械有限责任公司 | A kind of ballast pump concentric tube column and ballasting system |
| CN109230298A (en) * | 2018-08-28 | 2019-01-18 | 虞正洪 | A kind of heating sterilization Auger bridge insulation thermal resistance support construction |
-
2016
- 2016-12-30 CN CN201621472636.7U patent/CN206352589U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477019A (en) * | 2017-07-28 | 2017-12-15 | 武汉船用机械有限责任公司 | A kind of ballast pump concentric tube column and ballasting system |
| CN107355389A (en) * | 2017-08-18 | 2017-11-17 | 大连深蓝泵业有限公司 | Solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts |
| CN107355389B (en) * | 2017-08-18 | 2024-01-09 | 大连深蓝泵业有限公司 | Solar thermal power generation high-temperature long-axis molten salt pump |
| CN109230298A (en) * | 2018-08-28 | 2019-01-18 | 虞正洪 | A kind of heating sterilization Auger bridge insulation thermal resistance support construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170725 Termination date: 20181230 |