CN207892879U - Vertical long pump for liquid salts - Google Patents
Vertical long pump for liquid salts Download PDFInfo
- Publication number
- CN207892879U CN207892879U CN201721877659.0U CN201721877659U CN207892879U CN 207892879 U CN207892879 U CN 207892879U CN 201721877659 U CN201721877659 U CN 201721877659U CN 207892879 U CN207892879 U CN 207892879U
- Authority
- CN
- China
- Prior art keywords
- bearing
- pipe
- pump
- leak
- pump shaft
- 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.)
- Withdrawn - After Issue
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- 150000003839 salts Chemical class 0.000 title claims abstract description 35
- 239000007788 liquid Substances 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 230000008878 coupling Effects 0.000 claims abstract description 5
- 238000010168 coupling process Methods 0.000 claims abstract description 5
- 238000005859 coupling reaction Methods 0.000 claims abstract description 5
- -1 pump cover Chemical class 0.000 claims abstract description 3
- 239000003921 oil Substances 0.000 claims description 28
- 239000010687 lubricating oil Substances 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 10
- 238000005461 lubrication Methods 0.000 abstract description 9
- 239000000314 lubricant Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010850 salt effect Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The utility model discloses a kind of vertical long pump for liquid salts, including pump cover, pump housing inlet tube, pump shaft, multi-stage impeller, catheter, bearing, outlet elbow, bearing chamber and motor rack, motor, pump shaft be equipped with loaded on bearing it is indoor on, lower bearing, electric machine main shaft is connected by shaft coupling and pump shaft upper end, it is cased with leak-off pipe outside the pump shaft above multi-stage impeller, it on the pump shaft above multi-stage impeller by adding main sealing device, oil lubrication device is added on the indoor pump shaft of bearing, in high temperature, high pressure, there is good sealing and lubricant effect under the operating mode of big load, avoid the occurrence of failure, ensure the normal work of equipment for a long time.
Description
Technical field
The utility model is related to a kind of pump for liquid salts, the vertical long pump for liquid salts being especially used in solar power system.
Background technology
For vertical long pump for liquid salts as the important component in solar power system, the medium of conveying is high-temperature molten salt,
The temperature of fused salt is higher, ranges up to 600 DEG C, has the characteristics that high temperature, pressure are big, load is big, service condition is more harsh, work
Condition has larger difference with Conventional upright submerged pump, and to sealing system, lubricating system, more stringent requirements are proposed；Therefore existing various
Sealing system, the lubricating system of vertical submerged pump are difficult to meet the requirement of pump for liquid salts, volatile under high temperature, high pressure, big load
Effect can not ensure the normal work of pump for a long time.
Invention content
The purpose of this utility model is to be directed to deficiencies of the prior art, provides a kind of vertical long pump for liquid salts,
It has good sealing and lubricant effect under high temperature, high pressure, the operating mode of big load, avoids the occurrence of failure, ensures for a long time
The normal work of equipment.
In order to achieve the above objectives, the vertical long pump for liquid salts of the utility model, including it is pump cover, pump housing inlet tube, pump shaft, more
Grade impeller, the catheter being connected with pump housing inlet tube, the bearing being connected with catheter, outlet elbow, the bearing being coupled on bearing
Room and motor rack, motor, lower part is equipped with lubricating oil in bearing chamber, and pump shaft, which is equipped with, is loaded on the indoor upper and lower bearing of bearing, motor
Main shaft is connected by shaft coupling and pump shaft upper end, it is characterised in that leak-off pipe, aerial drainage are cased with outside the pump shaft above multi-stage impeller
Pipe upper end is connected firmly with bearing, and leak-off pipe is fixedly connected with two or more overflow pipes, the inner end of overflow pipe with communicated in leak-off pipe, overflow
The outer end of flow tube both passes through catheter, and sealing axle sleeve is installed in leak-off pipe, and spiral shell is fixedly connected on the pump shaft in sealing axle sleeve
Sealing shroud is revolved, helixseal covers outer circle and is equipped with the rotation direction helicla flute opposite with pump shaft direction of rotation；Outside the indoor pump shaft of bearing
It connects firmly equipped with oily axle sleeve is carried, spiral is also fixedly connected on pump shaft and carries oil seal set, the lower part that spiral carries oil seal set is equipped with one section of chamber
Body, the top for carrying oily axle sleeve are located in the cavity, and the cavity wall hypomere that spiral carries oil seal set is equipped with and pump shaft direction of rotation
Identical lower screw thread, spiral carry the cavity wall epimere of oily axle sleeve equipped with the upper screw thread with pump shaft direction of rotation phase side, in spiral
It carries in oil seal set and is equipped with several cavity sides for carrying oilhole, carrying between the inner end of oilhole and upper screw thread and lower screw thread being obliquely installed
Wall is connected, and the outer end for carrying oilhole is located at below upper bearing (metal).
In use, fused salt enters the gap between leak-off pipe and pump shaft, upward channelling, the helicla flute of reverse rotation is to fused salt
Effect is pushed away under generation, it is prevented to leak upwards, leakage rate can be greatly decreased, and the fused salt leaked on a small quantity can flow back to fused salt by overflow pipe
In tank, there is good sealing effect, avoid damage of the fused salt to upper part；The lower screw thread that oil seal set is carried by spiral will
The lubricating oil of lower part is lifted up in bearing chamber, and upper screw thread will push away under lubricating oil, is formed in cavity between higher
Pressure so that lubricating oil is tilted to propose oilhole centrifugal injection upwards, is adequately contacted with upper bearing (metal), in heavy load
Operating mode under can also realize good heat dissipation and lubrication, ensure the normal work of equipment for a long time；
The upper end of the helixseal set is contacted with the step of pump shaft as a further improvement of the utility model, spiral
The lower end of sealing shroud is externally provided with taper sheath, and taper adapter sleeve is equipped on the outside of the epimere of taper sheath, and taper sheath is arranged with taper fastening
There are matched locking axoid, taper sheath to be connected by several longitudinal clamping screws with taper adapter sleeve；Convenient for helixseal
The installation and dismounting of set；
As a further improvement of the utility model, the cavity inner wall interval of the bearing chamber be fixedly connected with it is more than two to
Projecting inward bearing outer ring bearing rib, each bearing outer ring bearing rib include the radial support block for being equipped with intrados, consolidate
It is coupled to the longitudinal bracing step of radial support block lower end, the inner end of longitudinal bracing step is located at the inside of intrados, radial support
The two sides of block are the inclined-plane in a certain angle with vertical direction, and the lower bearing is loaded on longitudinal bracing step；In use,
Lower axle bearing outer-ring is set on longitudinal bracing step, and outer circle and radial support block coordinate, the horizontal all directions of vertical bearing room by
Power is uniform；When lower bearing operates, the lubricating oil of splashing can be through in the gap and bearing chamber between adjacent bearing outer ring bearing rib
Wall and bearing outer ring contact, while being flowed along the inclined side of radial support block, increase the time of contact with wall surface, is conducive to dissipate
Heat and lubrication；Using the bearing outer ring bearing rib at interval, oil storage space can be increased, ensure the normal work of pump for a long time；
The leak-off pipe includes upper leak-off pipe and lower leak-off pipe, upper leak-off pipe as a further improvement of the utility model,
It is connected firmly with bearing, overflow pipe is fixed on lower leak-off pipe and is connected firmly with catheter, and the upper end of lower leak-off pipe is equipped with step juxtaposition
In in the stepped hole of upper leak-off pipe lower end, longitudinally spaced in the radial clearance of lower leak-off pipe upper end and upper leak-off pipe lower end
Equipped with ceramic beaverboard and metal O-ring；When leak-off pipe is longer, segmentation structure need to be used, ceramic beaverboard and metal are O-shaped
Circle can play preferable sealing effect and bear high temperature, high pressure, prevent the fused salt in catheter from entering leak-off pipe；
Protective gas access is associated on the leak-off pipe above outlet elbow as a further improvement of the utility model,
Pipe；The protective gas such as nitrogen can be passed through, melting salt oxidation is prevented；
It is additionally provided with the stuffing seal outside pump shaft on bearing admittedly as a further improvement of the utility model,；It can
Further strengthen sealing effect；
As a further improvement of the utility model, fan blade is also associated on the pump shaft above stuffing seal；
Stuffing seal can be cooled down；
In bearing chamber lower part it is additionally provided with oil inlet pipe as a further improvement of the utility model, and by oil pipe and bearing chamber
The connected oil ga(u)ge in lower part；It is observed convenient for the addition of lubricating oil and liquid level；
In conclusion the utility model has good sealing and lubrication effect under high temperature, high pressure, the operating mode of big load
Fruit avoids the occurrence of failure, ensures the normal work of equipment for a long time.
Description of the drawings
Fig. 1 is the front view of the utility model embodiment.
Fig. 2 is the partial enlarged view of main sealing device in Fig. 1.
Fig. 3 is the partial enlarged view at B in Fig. 2.
Fig. 4 is the enlarged view that oil lubrication device is carried in Fig. 1.
Fig. 5 is the enlarged plan view of Fig. 1 middle (center) bearings room.
Fig. 6 is the A-A sectional views of Fig. 5.
Fig. 7 is the enlarged front view of upper sealing structure between leak-off pipe and lower leak-off pipe in Fig. 1.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figures 1 to 6, the vertical long pump for liquid salts, including pump cover 1, pump housing inlet tube 2, pump shaft 3, multi-stage impeller
4, the catheter 5 that is connected by bolt with pump housing inlet tube 3, the bearing 6 being connected by bolt with catheter 5, welding are coupled to branch
Outlet elbow 7, bearing chamber 8 and motor rack 9, motor 10 on seat 6, lower part is equipped with lubricating oil in bearing chamber 8, and pump shaft 3 is equipped with
Loaded on the upper and lower bearing in bearing chamber 8, the main shaft of motor 10 is connected by shaft coupling 11 and 3 upper end of pump shaft, in multi-stage impeller 4
The pump shaft 3 of top is equipped with main sealing device 12, is equipped on the pump shaft 3 in bearing chamber 8 and carries oil lubrication device 13；Primary seal fills
It includes the upper leak-off pipe 14 being arranged outside pump shaft 3 and lower leak-off pipe 15 to set 12, and upper leak-off pipe 14 is connected firmly with the welding of bearing 6, lower aerial drainage
The welding of pipe 15 is fixedly connected with three overflow pipes 16, and the inner end of overflow pipe 16 is communicated in lower leak-off pipe 15, the outer end of overflow pipe 16
Catheter 5 is both passed through, sealing axle sleeve 17 is installed with by the screw of end in lower leak-off pipe 15, the pump in sealing axle sleeve 17
Helixseal set 18 is installed on axis 3, helixseal covers 18 outer circles and is equipped with the rotation direction helicla flute 19 opposite with pump shaft direction of rotation,
The upper end of helixseal set 18 is contacted with the step of pump shaft 3, and the lower end of helixseal set 18 is externally provided with taper sheath 20, taper sheath 20
Epimere on the outside of be equipped with taper adapter sleeve 21, taper sheath 20 and taper adapter sleeve 21 are equipped with matched locking axoid, taper sheath
20 are connected with taper adapter sleeve 21 by several longitudinal clamping screws 22；The upper end of lower leak-off pipe 15 is placed in equipped with step
In the stepped hole of 14 lower end of leak-off pipe, set in longitudinally spaced with the radial clearance of upper leak-off pipe lower end in lower leak-off pipe upper end
There are ceramic beaverboard 23 and metal O-ring 24；It includes being connected firmly in bearing chamber by the screw on bearing 6 to carry oil lubrication device 13
Oily axle sleeve 25 is carried outside pump shaft 3, spiral is also fixedly connected on pump shaft 3 by coupling nut set 26 and screw carries oil seal set 27,
The lower part that spiral carries oil seal set 27 is equipped with one section of cavity, and the top for carrying oily axle sleeve 25 is located in the cavity, and spiral carries oil seal
The cavity wall hypomere of set 27 is equipped with rotation direction lower screw thread 28 identical with pump shaft direction of rotation, and spiral puies forward the cavity side of oily axle sleeve 27
Wall epimere is equipped with the upper screw thread 29 of rotation direction and pump shaft direction of rotation phase side, carries in oil seal set 27 in spiral and being set equipped with several inclinations
That sets carries oilhole 30, and the cavity wall carried between the inner end of oilhole 30 and upper screw thread 29 and lower screw thread 28 is connected, and carries oilhole 30
Outer end is located at 31 lower section of upper bearing (metal)；The cavity inner wall interval of the bearing chamber 8 is integrally connected firmly there are four inwardly projecting bearing
Outer ring bearing rib 32, each bearing outer ring bearing rib 32 include the radial support block 33 for being equipped with intrados, are fixed on diameter
To the longitudinal bracing step 34 of 33 lower end of supporting block, the inner end of longitudinal bracing step 34 is located at the inside of intrados, radial support
The two sides of block 34 are the inclined-plane in a certain angle with vertical direction, and the lower bearing is loaded on longitudinal bracing step 34；
It is associated with protective gas access tube 35 on the upper leak-off pipe 14 of 7 top of outlet elbow；It is additionally provided with admittedly outside pump shaft 3 on bearing 6
Stuffing seal 36 is also associated with fan blade 37 on the pump shaft 3 above stuffing seal 36；8 lower part of bearing chamber also
The oil ga(u)ge 39 being connected with 8 lower part of bearing chamber equipped with oil inlet pipe 38 and by oil pipe；
In use, pump cover 1, pump housing inlet tube 2, catheter 5 are placed in fused salt tank；When work, motor 10 starts, multistage
Impeller 4 rotates, and fused salt is discharged through outlet elbow 7；In work, have fused salt enter gap between lower leak-off pipe 15 and pump shaft 3,
Upward channelling, helixseal, which covers under the helicla flute 19 that rotation direction is opposite with pump shaft direction of rotation on 18 generates fused salt, pushes away effect, hinders
Only it is leaked upwards, and leakage rate can be greatly decreased, and the fused salt leaked on a small quantity can be flow back to by overflow pipe 16 in fused salt tank, is had good
Sealing effect, avoid fused salt from top leak caused by serious consequence；Oil seal set 27 is carried by the spiral rotated with pump shaft 3
Lower screw thread 28 lubricating oil of lower part in bearing chamber 8 is lifted up, and upper screw thread 29 will push away under lubricating oil, between
Higher pressure is formed in cavity so that lubricating oil is tilted to propose the centrifugal injection upwards of oilhole 30, is carried out with upper bearing (metal) 31
Adequately contact can also realize good heat dissipation and lubrication under the operating mode of heavy load, ensure the normal work of equipment for a long time；
The outer ring of lower bearing is set on longitudinal bracing step 34, and outer circle coordinates with radial support block 33, and the level of vertical bearing room 8 is each
Direction uniform force；When lower bearing operates, the lubricating oil of splashing can through between adjacent bearing outer ring bearing rib 32 gap with
8 inner wall of bearing chamber and bearing outer ring contact, while being flowed along the inclined side of radial support block 33, increase the contact with wall surface
Time is conducive to heat dissipation and lubrication；Using the bearing outer ring bearing rib 32 at interval, oil storage space can be increased, ensure pump for a long time
Normal work；By taper sheath 20 and taper adapter sleeve 21 convenient for the installation and dismounting of helixseal set 18；
When leak-off pipe is longer, segmentation structure need to be used, ceramic beaverboard 23 and metal O-ring 24 can play preferably
Sealing effect simultaneously bears high temperature, high pressure, prevents the high pressure fused salt in catheter 5 from entering leak-off pipe；Protective gas access tube 35 can
The protective gas such as nitrogen are passed through, melting salt oxidation is prevented.
Claims (8)
1. a kind of vertical long pump for liquid salts, including pump cover, pump housing inlet tube, pump shaft, multi-stage impeller, it is connected with pump housing inlet tube
Catheter, the bearing being connected with catheter, outlet elbow, bearing chamber and motor rack, the motor being coupled on bearing, under bearing chamber is interior
Portion is equipped with lubricating oil, and pump shaft, which is equipped with, is loaded on the indoor upper and lower bearing of bearing, and electric machine main shaft passes through shaft coupling and pump shaft upper end phase
Connection, it is characterised in that leak-off pipe is cased with outside the pump shaft above multi-stage impeller, leak-off pipe upper end is connected firmly with bearing, and leak-off pipe connects firmly
Have two an or more overflow pipes, the inner end of overflow pipe with communicated in leak-off pipe, the outer end of overflow pipe both passes through catheter, is letting out
It is installed with sealing axle sleeve in flow tube, helixseal set is fixedly connected on the pump shaft in sealing axle sleeve, helixseal set outer circle is equipped with
The rotation direction helicla flute opposite with pump shaft direction of rotation；It is installed with outside the indoor pump shaft of bearing and carries oily axle sleeve, also connected firmly on pump shaft
There is spiral to carry oil seal set, the lower part that spiral carries oil seal set is equipped with one section of cavity, and the top for carrying oily axle sleeve is located in the cavity,
The cavity wall hypomere that spiral carries oil seal set is equipped with lower screw thread identical with pump shaft direction of rotation, and spiral carries the cavity of oily axle sleeve
Side wall epimere is equipped with upper screw thread with pump shaft direction of rotation phase side, spiral carry oil seal set it is interior be equipped with it is several be obliquely installed carry
Oilhole, the cavity wall carried between the inner end of oilhole and upper screw thread and lower screw thread are connected, and the outer end for carrying oilhole is located under upper bearing (metal)
Side.
2. vertical long pump for liquid salts as described in claim 1, it is characterised in that the upper end of helixseal set and pump shaft
Step contacts, and the lower end of helixseal set is externally provided with taper sheath, is equipped with taper adapter sleeve on the outside of the epimere of taper sheath, taper sheath with
Taper adapter sleeve is equipped with matched locking axoid, and taper sheath is connected with taper adapter sleeve by several longitudinal clamping screws.
3. vertical long pump for liquid salts as claimed in claim 1 or 2, it is characterised in that the cavity inner wall interval of the bearing chamber
More than two inwardly projecting bearing outer ring bearing ribs are fixedly connected with, each bearing outer ring bearing rib includes being equipped with intrados
Radial support block, be fixed on the longitudinal bracing step of radial support block lower end, the inner end of longitudinal bracing step is located at intrados
Inside, the two sides of radial support block are the inclined-plane in a certain angle with vertical direction, and the lower bearing is propped up loaded on longitudinal
It supports on step.
4. vertical long pump for liquid salts as claimed in claim 3, it is characterised in that the leak-off pipe includes that upper leak-off pipe is let out under
Flow tube, upper leak-off pipe are connected firmly with bearing, and overflow pipe is fixed on lower leak-off pipe and is connected firmly with catheter, the upper end of lower leak-off pipe
It is placed in equipped with step in the stepped hole of upper leak-off pipe lower end, in the radial clearance of lower leak-off pipe upper end and upper leak-off pipe lower end
It is equipped with ceramic beaverboard and metal O-ring in longitudinally spaced.
5. vertical long pump for liquid salts as claimed in claim 4, it is characterised in that be associated on the leak-off pipe above outlet elbow
Protective gas access tube.
6. vertical long pump for liquid salts as claimed in claim 5, it is characterised in that be additionally provided with filling out outside pump shaft on bearing admittedly
Expect sealing device.
7. vertical long pump for liquid salts as claimed in claim 6, it is characterised in that on the pump shaft above stuffing seal also
It is associated with fan blade.
8. vertical long pump for liquid salts as claimed in claim 7, it is characterised in that be additionally provided with oil inlet pipe in bearing chamber lower part and lead to
Cross the oil ga(u)ge that oil pipe is connected with bearing chamber lower part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721877659.0U CN207892879U (en) | 2017-12-28 | 2017-12-28 | Vertical long pump for liquid salts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721877659.0U CN207892879U (en) | 2017-12-28 | 2017-12-28 | Vertical long pump for liquid salts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207892879U true CN207892879U (en) | 2018-09-21 |
Family
ID=63550207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721877659.0U Withdrawn - After Issue CN207892879U (en) | 2017-12-28 | 2017-12-28 | Vertical long pump for liquid salts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207892879U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105144A (en) * | 2017-12-28 | 2018-06-01 | 四川省自贡工业泵有限责任公司 | Vertical long pump for liquid salts |
| 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 |
-
2017
- 2017-12-28 CN CN201721877659.0U patent/CN207892879U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105144A (en) * | 2017-12-28 | 2018-06-01 | 四川省自贡工业泵有限责任公司 | Vertical long pump for liquid salts |
| CN108105144B (en) * | 2017-12-28 | 2024-03-26 | 四川省自贡工业泵有限责任公司 | Vertical long-axis molten salt 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180921 Effective date of abandoning: 20240326 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180921 Effective date of abandoning: 20240326 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |