CN108087324A - The spiral sealing device of vertical long pump for liquid salts - Google Patents
The spiral sealing device of vertical long pump for liquid salts Download PDFInfo
- Publication number
- CN108087324A CN108087324A CN201711464220.XA CN201711464220A CN108087324A CN 108087324 A CN108087324 A CN 108087324A CN 201711464220 A CN201711464220 A CN 201711464220A CN 108087324 A CN108087324 A CN 108087324A
- Authority
- CN
- China
- Prior art keywords
- pipe
- pump
- leak
- pump shaft
- liquid salts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/086—Sealings especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
Abstract
The invention discloses a kind of spiral sealing devices of vertical long pump for liquid salts, including pump shaft, catheter, pump body support, the leak-off pipe being placed on outside pump shaft, leak-off pipe upper end is connected firmly with bearing, it is characterized in that sealing axle sleeve is installed in leak-off pipe, helixseal set is fixedly connected on 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.The present invention has good sealing effect under high temperature, high pressure, the operating mode of big load, avoids the occurrence of failure, especially suitable for pump for liquid salts, can ensure the normal work of equipment for a long time.
Description
Technical field
The present invention relates to a kind of spiral sealing devices of vertical long pump for liquid salts.
Background technology
For vertical long pump for liquid salts as the important component in solar power system, the medium conveyed 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 higher requirement is proposed to sealing system；And existing various vertical submerged pumps
Sealing system, if mechanical seal, packing seal are difficult to meet the requirements, once leakage under high temperature, high pressure, big load part
Fragile, generation blocks, is vulnerable, can not ensure the normal work of pump for a long time.
The content of the invention
The purpose of the present invention is being directed to deficiencies of the prior art, a kind of spiral of vertical long pump for liquid salts is provided
Sealing device, it has good sealing effect under high temperature, high pressure, the operating mode of big load, avoids the occurrence of failure, particularly suitable
In pump for liquid salts, it can ensure the normal work of equipment for a long time.
In order to achieve the above objectives, the spiral sealing device of vertical long pump for liquid salts of the invention, including pump shaft, catheter,
Pump body support, the leak-off pipe being placed on outside pump shaft, leak-off pipe upper end are connected firmly with bearing, it is characterised in that are installed in leak-off pipe close
Axle sleeve is sealed, helixseal set is fixedly connected on the pump shaft in sealing axle sleeve, helixseal set outer circle is equipped with rotation direction and is rotated with pump shaft
The opposite helicla flute in direction.
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, avoids the occurrence of leakage, in high temperature, high pressure, the operating mode of big load without vulnerable part, tool
There is good sealing effect, avoid damage of the fused salt to upper part, ensure the normal work of equipment for a long time；
As a further improvement on the present invention, the upper end of the helixseal set is contacted with the step of pump shaft, helixseal set
Lower end 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 equipped with taper adapter sleeve and is engaged
Locking axoid, taper sheath is connected with taper adapter sleeve by several longitudinal clamping screws；Convenient for the installation of helixseal set
With dismounting；
As a further improvement on the present invention, the overflow pipe of two or more is fixedly connected on the leak-off pipe above the sealing axle sleeve,
With being communicated in leak-off pipe, the outer end of overflow pipe both passes through catheter for the inner end of overflow pipe；The fused salt leaked on a small quantity can be by overflow
Pipe is flow back in fused salt tank；
In conclusion the present invention has good sealing effect under high temperature, high pressure, the operating mode of big load, failure is avoided the occurrence of,
Especially suitable for pump for liquid salts, it can ensure the normal work of equipment for a long time.
Description of the drawings
Fig. 1 is the front view of the embodiment of the present invention.
Fig. 2 is the partial enlarged view at B in Fig. 1.
Specific embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
As shown in Figure 1 to Figure 2, the spiral sealing device of the vertical long pump for liquid salts, including pump shaft 1, catheter 2, the pump housing
Bearing（It is not shown）, the leak-off pipe 3 that is placed on outside pump shaft 1,3 upper end of leak-off pipe connects firmly with bearing, passes through end in leak-off pipe 3
Screw is installed with sealing axle sleeve 4, and helixseal set 5 is installed on the pump shaft 1 in sealing axle sleeve 4, and helixseal covers 5 outer circles and sets
There is the helicla flute 6 that rotation direction is opposite with pump shaft direction of rotation, the upper end of helixseal set 5 is contacted with the step of pump shaft 1, helixseal
The lower end of set 5 is externally provided with taper sheath 7, and taper adapter sleeve 8, taper sheath 7 and taper adapter sleeve 8 are equipped on the outside of the epimere of taper sheath 7
Equipped with matched locking axoid, taper sheath 7 is connected with taper adapter sleeve 8 by several longitudinal clamping screws 9；In sealing axis
Welding is fixedly connected with two overflow pipes 10 on the leak-off pipe 3 of 4 top of set, and the inner end of overflow pipe 10 is communicated in lower leak-off pipe 3, is overflow
The outer end of flow tube 10 both passes through catheter 2；
In use, fused salt has catheter 2 to discharge, have gap that part fused salt enters between leak-off pipe 3 and pump shaft 1, alter upwards
Stream, the helicla flute 6 of reverse rotation prevent it from leaking upwards, avoid the occurrence of leakage, in high temperature, height to pushing away effect under fused salt generation
Pressure, the operating mode of big load have good sealing effect, avoid fused salt to the damage of upper part and generate stifled without vulnerable part
Plug ensures the normal work of equipment for a long time；The fused salt leaked on a small quantity can be flow back to by overflow pipe 10 in fused salt tank；Taper sheath 7 with
Taper adapter sleeve 8 is convenient for the installation and dismounting of helixseal set.
Claims (3)
1. a kind of spiral sealing device of vertical long pump for liquid salts, including pump shaft, catheter, pump body support, it is placed on outside pump shaft
Leak-off pipe, leak-off pipe upper end are connected firmly with bearing, it is characterised in that sealing axle sleeve are installed in leak-off pipe, in sealing axle sleeve
Helixseal set is fixedly connected on pump shaft, helixseal set outer circle is equipped with the rotation direction helicla flute opposite with pump shaft direction of rotation.
2. the spiral sealing device of vertical long pump for liquid salts as described in claim 1, it is characterised in that the helixseal set
Upper end contacted with the step of pump shaft, the lower end of helixseal set is externally provided with taper sheath, and taper is equipped on the outside of the epimere of taper sheath
Adapter sleeve, taper sheath are equipped with matched locking axoid with taper adapter sleeve, and taper sheath passes through several longitudinal directions with taper adapter sleeve
Clamping screw be connected.
3. the spiral sealing device of vertical long pump for liquid salts as claimed in claim 1 or 2, it is characterised in that the sealing axle sleeve
The overflow pipe of two or more is fixedly connected on the leak-off pipe of top, the inner end of overflow pipe in leak-off pipe with communicating, outside overflow pipe
End both passes through catheter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711464220.XA CN108087324A (en) | 2017-12-28 | 2017-12-28 | The spiral sealing device of vertical long pump for liquid salts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711464220.XA CN108087324A (en) | 2017-12-28 | 2017-12-28 | The spiral sealing device of vertical long pump for liquid salts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108087324A true CN108087324A (en) | 2018-05-29 |
Family
ID=62180998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711464220.XA Pending CN108087324A (en) | 2017-12-28 | 2017-12-28 | The spiral sealing device of vertical long pump for liquid salts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108087324A (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
- 2017-12-28 CN CN201711464220.XA patent/CN108087324A/en active Pending
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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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |