CN217950475U - Spiral cooler for turbine expander bearing - Google Patents
Spiral cooler for turbine expander bearing Download PDFInfo
- Publication number
- CN217950475U CN217950475U CN202221905663.4U CN202221905663U CN217950475U CN 217950475 U CN217950475 U CN 217950475U CN 202221905663 U CN202221905663 U CN 202221905663U CN 217950475 U CN217950475 U CN 217950475U
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- cooler
- bearing
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- turbine
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Abstract
The utility model relates to a spiral cooler for a turbine expander bearing, belonging to the field of turbine expanders, and comprising a rotating shaft, a shell, a turbine group, a spiral cooler group and a bearing group which are sleeved on the rotating shaft; and the screw cooler group includes: a first screw cooler and a second screw cooler; the first spiral cooler and the second spiral cooler are identical in structure; both are composed of a stator and a rotor; the rotor is provided with a plurality of spiral grooves with the same structure, size and shape, and the spiral grooves are rotationally arranged around the peripheral surface of the rotor; thereby the utility model discloses simple structure, and stable performance, helical structure is through careful design in the spiral cooler simultaneously, provides fixed airflow and pressure under given operating speed, reaches required cooling requirement, and does not too much consume the pneumatic efficiency of fan.
Description
Technical Field
The utility model relates to a spiral cooler for turbo expander bearing belongs to the turbo expander field.
Background
Most of turboexpander bearings in the prior art are cooled by oil, and the turboexpander bearings are cooled by circulating lubricating oil, so that a cooling effect is achieved, but the cooling method is relatively complex in structure, and the lubricating oil is polluted after working, and an independent axial-flow impeller or an independent circulating fan is required in the traditional air cooling structure; the equipment power it consumes can reduce overall efficiency.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: a screw cooler for a turboexpander bearing is provided that solves the above mentioned problems.
The technical scheme is as follows: a spiral cooler for a bearing of a turboexpander comprises a rotating shaft, a shell, a turbine group, a spiral cooler group and a bearing group, wherein the turbine group, the spiral cooler group and the bearing group are sleeved on the rotating shaft.
In a further embodiment, the set of turbines includes a first turbine and a second turbine.
In a further embodiment, the spiral cooler package comprises: a first screw cooler and a second screw cooler; the first spiral cooler and the second spiral cooler are identical in structure and both consist of a rotor and a stator, and the rotor is sleeved on the rotating shaft and rotates along with the rotating shaft.
In a further embodiment, the spiral cooler is provided with a plurality of spiral grooves with the same structure, size and shape, and the spiral grooves are rotationally arranged around the outer circumferential surface of the rotor.
In a further embodiment, the first screw cooler is located between the first turbine and one end of the housing;
the second screw cooler is located between the second turbine and the other end of the housing.
In a further embodiment, the bearing set comprises a first bearing and a second bearing, the first bearing and the second bearing are sleeved on the rotating shaft and rotate along with the rotating shaft, the shell is sleeved on the first bearing and the second bearing, a supporting column is arranged between the first bearing and the second bearing, and two ends of the supporting column respectively abut against the first bearing and the second bearing.
In a further embodiment, the stator in the second screw cooler is connected to the other end surface of the housing;
the stator in the first screw cooler is connected to one end surface of the housing.
In a further embodiment, the outer side ends of the first turbine and the second turbine are respectively provided with a limiting nut and are screwed on the rotating shaft.
In a further embodiment, a cooling cavity is formed between the support column and the rotating shaft and between the support column and the bearing set, and an exhaust hole is formed in the middle of the shell and penetrates through the support column to be communicated with the cooling cavity.
In a further embodiment, the rotor in the first screw cooler and the rotor of the second screw cooler are mounted in a symmetrical manner.
In a further embodiment, the centers of the rotating shaft, the turbine set, the shell, the spiral cooler set and the bearing set are on the same axis.
In a further embodiment, a very small gap is provided between the stator and the rotor, the thickness of the gap and the depth of the helical groove being determined by the amount of cooling required.
Has the advantages that: the utility model relates to a spiral cooler for a turbine expander bearing, belonging to the field of turbine expanders, and comprising a rotating shaft, a shell, a turbine group, a spiral cooler group and a bearing group, wherein the turbine group, the spiral cooler group and the bearing group are sleeved on the rotating shaft; and the screw cooler group includes: a first screw cooler and a second screw cooler; the first spiral cooler and the second spiral cooler are identical in structure; both of which are composed of a stator and a rotor; the rotor is provided with a plurality of spiral grooves with the same structure, size and shape, and the spiral grooves are rotationally arranged around the peripheral surface of the rotor; thereby the utility model discloses simple structure, and stable performance, helical structure provides fixed airflow and pressure through careful design in the spiral cooler simultaneously under given operating rotation speed, reaches required cooling requirement, and does not too much consume the pneumatic efficiency of fan.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Figure 2 is an isometric view of the screw cooler of the present invention.
Fig. 3 is a schematic view of the screw cooler of the present invention.
Reference numerals: the cooling device comprises a rotating shaft 1, a shell 2, a turbine group 3, a spiral cooler group 4, a bearing group 5, a first turbine 6, a second turbine 7, a first spiral cooler 8, a second spiral cooler 9, a rotor 10, a stator 11, a spiral groove 18, a first bearing 12, a second bearing 13, a support column 14, a limiting nut 15 and a cooling cavity 16.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these details; in other instances, well-known features have not been described in order to avoid obscuring the present invention.
As shown in fig. 1, a screw cooler for a turboexpander bearing comprises: the cooling system comprises a rotating shaft 1, a shell 2, a turbine group 3, a spiral cooler group 4 and a bearing group 5, wherein the turbine group 3, the spiral cooler group 4 and the bearing group 5 are sleeved on the rotating shaft 1.
Example 1:
as shown in fig. 1 and 2, the spiral cooler group 4 includes: a first screw cooler 8 and a second screw cooler 9; the first spiral cooler 8 and the second spiral cooler 9 are identical in structure and both consist of a rotor 10 and a stator 11, and the rotor 10 is sleeved on the rotating shaft 1 and rotates along with the rotating shaft.
In one embodiment, as shown in fig. 2, the spiral cooler is provided with a plurality of spiral grooves 18 having the same structure, size and shape, and the spiral grooves 18 are rotatably disposed around the outer circumferential surface of the rotor 10.
In one embodiment, the stator 11 in the second screw cooler 9 is connected to the other end surface of the housing 2; the stator 11 in the first screw cooler 8 is connected to one end surface of the housing 2.
In one embodiment, the rotor 10 in the first screw cooler 8 and the rotor 10 of the second screw cooler 9 are mounted in a symmetrical manner.
In one embodiment, a gap is provided between the stator 11 and the rotor 10, and the thickness of the gap and the depth of the helical groove 18 are determined by the amount of cooling required.
Example 2:
as shown in fig. 1, the turbine group 3 comprises a first turbine 6 and a second turbine 7;
in one embodiment, the first screw cooler 8 is located between the first turbine 6 and one end of the housing 2; the second screw cooler 9 is located between the second turbine 7 and the other end of the housing 2.
In one embodiment, the outer ends of the first turbine 6 and the second turbine 7 are provided with limit nuts 15 and are screwed on the rotating shaft 1.
Example 3:
as shown in fig. 1, the bearing set 5 includes a first bearing 12 and a second bearing 13, the first bearing 12 and the second bearing 13 are both sleeved on the rotating shaft 1 and rotate therewith, the housing 2 is sleeved on the first bearing 12 and the second bearing 13, a supporting column 14 is disposed between the first bearing 12 and the second bearing 13, and two ends of the supporting column respectively abut against the first bearing 12 and the second bearing 13.
Example 4:
as shown in fig. 1, a cooling cavity 16 is formed between the support column 14 and the rotating shaft 1 and the bearing set 5, and an exhaust hole is formed in the middle of the housing 2 and passes through the support column 14 to communicate with the cooling cavity 16; the spiral groove 18 draws in a gas flow to form a high-pressure region, and the low-temperature gas circulated by the turbo expander is introduced into the cooling chamber 16 to cool the same, and the introduced gas is cooled and discharged through the exhaust hole.
In one embodiment, the centers of the rotating shaft 1, the turbine group 3, the housing 2, the spiral cooler group 4 and the bearing group 5 are on the same axis.
In the aforesaid, rotor 10 passes the stator 11 of middle division of through-hole, be provided with on rotor 10 with stator 11's through-hole inner wall complex pressure area, leave the clearance between pressure area and the through-hole inner wall, the pressure area outer peripheral face includes polished rod portion and slot portion, slot portion comprises round helicla flute 18, 18 one end of helicla flute is the opening, and the opening is located the terminal surface of stator 11 one end, the other end is for closing the mouth, 18 the position of closing the mouth of helicla flute is located stator 11 middle part, the slot extends to axial middle part from stator 11 one end promptly, the degree of depth of slot, spiral angle etc. can adjust according to operating condition, in this application, the degree of depth of slot is the millimeter level, pressure area generally sets up and will be big at journal position and external diameter.
According to the spiral cooler, the design of the spiral cooler is optimized through the latest fluid dynamic pressure sealing theory and the computer fluid mechanics simulation, the thickness of the gap between the stator 11 and the rotor 10 of the spiral cooler is increased, the processing difficulty is greatly reduced, the processing cost is reduced, and the use field is expanded.
The utility model discloses a helicla flute 18 structure that proposes cools off the leading-in bearing of cooling gas. The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be modified to perform various equivalent transformations, which all belong to the protection scope of the present invention.
Claims (10)
1. A spiral cooler for a bearing of a turboexpander is characterized by comprising a rotating shaft, a shell, a turbine group, a spiral cooler group and a bearing group, wherein the turbine group, the spiral cooler group and the bearing group are sleeved on the rotating shaft;
the spiral cooler group includes: a first screw cooler and a second screw cooler; the first spiral cooler and the second spiral cooler are identical in structure and both consist of a rotor and a stator, and the rotor is sleeved on the rotating shaft and rotates along with the rotating shaft.
2. The spiral cooler for a turboexpander bearing according to claim 1, wherein a plurality of spiral grooves having the same structure, size and shape are formed on the spiral cooler, and the spiral grooves are rotatably disposed around the outer circumferential surface of the rotor.
3. The screw cooler for a turboexpander bearing according to claim 1, characterized in that said turbine group comprises a first turbine and a second turbine;
the first screw cooler is located between the first turbine and one end of the housing;
the second screw cooler is located between the second turbine and the other end of the housing.
4. The screw cooler for a turboexpander bearing according to claim 3, wherein the bearing set comprises a first bearing and a second bearing, the first bearing and the second bearing are sleeved on the rotating shaft and rotate with the rotating shaft, the housing is sleeved on the first bearing and the second bearing, a supporting column is arranged between the first bearing and the second bearing, and two ends of the supporting column respectively abut against the first bearing and the second bearing.
5. The screw cooler for a turboexpander bearing according to claim 4, wherein the stator in the second screw cooler is connected to the other end surface of the casing;
the stator in the first screw cooler is connected to one end surface of the housing.
6. The screw cooler for a turboexpander bearing according to claim 3, wherein the outer ends of the first turbine and the second turbine are each provided with a limit nut and are screwed to the rotary shaft.
7. The screw cooler for a turboexpander bearing according to claim 4, characterized in that a cooling chamber is formed between the support column and the rotary shaft and the bearing group, and a vent hole is provided in the middle of the housing and communicates with the cooling chamber through the support column.
8. The screw cooler for a turboexpander bearing according to claim 1, characterized in that the rotor of the first screw cooler and the rotor of the second screw cooler are mounted in a symmetrical manner.
9. The screw cooler for a turboexpander bearing according to claim 1, wherein the centers of the rotating shaft, the turbine group, the casing, the screw cooler group and the bearing group are on the same axis.
10. The screw cooler for a turboexpander bearing according to claim 2, characterized in that a gap is provided between said stator and said rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221905663.4U CN217950475U (en) | 2022-07-22 | 2022-07-22 | Spiral cooler for turbine expander bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221905663.4U CN217950475U (en) | 2022-07-22 | 2022-07-22 | Spiral cooler for turbine expander bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217950475U true CN217950475U (en) | 2022-12-02 |
Family
ID=84223318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221905663.4U Active CN217950475U (en) | 2022-07-22 | 2022-07-22 | Spiral cooler for turbine expander bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217950475U (en) |
-
2022
- 2022-07-22 CN CN202221905663.4U patent/CN217950475U/en active Active
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