CN207892880U - 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
- CN207892880U CN207892880U CN201721880220.3U CN201721880220U CN207892880U CN 207892880 U CN207892880 U CN 207892880U CN 201721880220 U CN201721880220 U CN 201721880220U CN 207892880 U CN207892880 U CN 207892880U
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- Prior art keywords
- pipe
- pump
- leak
- pump shaft
- liquid salts
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Abstract
The utility model 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 being installed with sealing axle sleeve in leak-off pipe, helixseal set is fixedly connected on pump shaft in sealing axle sleeve, helixseal covers outer circle and is equipped with the rotation direction helicla flute opposite with pump shaft direction of rotation.The utility model 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 utility model is related 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 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, more stringent requirements are proposed；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.
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
Spiral sealing device, it 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, it can ensure the normal work of equipment for a long time.
In order to achieve the above objectives, the spiral sealing device of the vertical long pump for liquid salts of the utility model, including pump shaft, drain
Pipe, 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 fixed in leak-off pipe
There is sealing axle sleeve, helixseal set is fixedly connected on the pump shaft in sealing axle sleeve, helixseal covers outer circle and is equipped with rotation direction and pump shaft
The opposite helicla flute in direction of rotation.
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, avoids 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
The lower end of set 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 phase with taper adapter sleeve
The locking axoid of cooperation, taper sheath are connected with taper adapter sleeve by several longitudinal clamping screws；Convenient for helixseal set
Installation and dismounting；
As a further improvement of the utility model, two or more are fixedly connected on the leak-off pipe above the sealing axle sleeve
Overflow pipe, the inner end of overflow pipe with communicated in leak-off pipe, the outer end of overflow pipe both passes through catheter；The fused salt leaked on a small quantity can
It is flow back in fused salt tank by overflow pipe；
In conclusion the utility model has good sealing effect under high temperature, high pressure, the operating mode of big load, avoid
It fails, especially suitable for pump for liquid salts, can ensure 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 at B in Fig. 1.
Specific implementation mode
The utility model is described in further detail below in conjunction with 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 are the helicla flute 6 that rotation direction is opposite with pump shaft direction of rotation, the upper end of helixseal set 5 to be 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 have catheter 2 discharge, have part fused salt enter the gap between leak-off pipe 3 and pump shaft 1, to
The helicla flute 6 of upper channelling, reverse rotation prevents it from leaking upwards, leakage is avoided the occurrence of, in height to pushing away effect under fused salt generation
Temperature, high pressure, the operating mode of big load have good sealing effect, avoid damage and production of the fused salt to upper part without vulnerable part
It is raw to block, ensure 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 are convenient for the installation and dismounting of helixseal set with taper adapter sleeve 8.
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 covers outer circle and 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
Be fixedly connected with two or more overflow pipes on the leak-off pipe of top, the inner end of overflow pipe with communicated in leak-off pipe, overflow pipe it is outer
End both passes through catheter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721880220.3U CN207892880U (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 |
|---|---|---|---|
| CN201721880220.3U CN207892880U (en) | 2017-12-28 | 2017-12-28 | The spiral sealing device of vertical long pump for liquid salts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207892880U true CN207892880U (en) | 2018-09-21 |
Family
ID=63550257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721880220.3U Active CN207892880U (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) | CN207892880U (en) |
-
2017
- 2017-12-28 CN CN201721880220.3U patent/CN207892880U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |