CN212177448U - Centrifugal compressor shaft seal structure - Google Patents
Centrifugal compressor shaft seal structure Download PDFInfo
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- CN212177448U CN212177448U CN202020312877.5U CN202020312877U CN212177448U CN 212177448 U CN212177448 U CN 212177448U CN 202020312877 U CN202020312877 U CN 202020312877U CN 212177448 U CN212177448 U CN 212177448U
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- comb tooth
- sealing
- tooth sealing
- motor
- annular cover
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Abstract
A shaft seal sealing structure of a centrifugal compressor comprises a motor, a clutch and a shaft seal sealing device; the motor is connected with the clutch through a motor shaft; the tail part of the motor is provided with a motor fan; the tail end of the motor shaft is hermetically connected with the clutch in a comb tooth sealing mode; a shaft seal sealing device is arranged outside the motor shaft; the shaft seal sealing device comprises a comb tooth sealing annular cover, a comb tooth sealing section and a comb tooth sealing ring; the comb tooth sealing annular cover is arranged on the outer side of the motor shaft; the outer wall of one side of the comb tooth sealing annular cover is fixedly connected with the clutch housing; a sealing cavity is arranged between the comb tooth sealing annular cover and the motor shaft; a comb tooth sealing section is vertically arranged in the comb tooth sealing annular cover; the comb tooth sealing section is connected with a comb tooth sealing ring. The utility model discloses thoroughly solve circulation gas compressor clutch shaft seal lubricating oil leakage problem, avoid because of the parking that lubricating oil leaked and caused or other safe risk occurences of failure.
Description
Technical Field
The utility model relates to a compressor equipment makes the field, concretely relates to centrifugal compressor bearing seal structure.
Background
The polypropylene device circulating gas compressor is mainly used for medium circulation of a fluidized bed reactor, is driven by a motor and is matched with an accident expander for driving, the compressor is driven by the motor during normal operation, and the accident expander is driven by a medium at the outlet of the compressor to maintain the operation of the compressor through a clutch driving motor under the accident state of sudden power failure. The clutch is a shaft seal and is in a comb structure, the purpose of the clutch is to prevent lubricating oil from leaking, but the distance between the clutch and the motor fan in the air suction direction is only 200mm, and the clutch is located in a negative pressure area of the motor fan, so that the leakage amount of the lubricating oil leaking out along with the shaft seal is about 30 liters per day, and the safe and stable operation of the compressor is directly threatened.
Disclosure of Invention
An object of the utility model is to avoid prior art not enough, provide a centrifugal compressor bearing seal structure to under the condition that does not change motor and clutch shaft interval, eliminate clutch bearing and leak lubricating oil problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a shaft seal sealing structure of a centrifugal compressor comprises a motor, a clutch and a shaft seal sealing device; the motor is connected with the clutch through a motor shaft; the tail part of the motor is provided with a motor fan; the tail end of the motor shaft is hermetically connected with the clutch in a comb tooth sealing mode; a shaft seal sealing device is arranged outside the motor shaft; the shaft seal sealing device comprises a comb tooth sealing annular cover, a comb tooth sealing section and a comb tooth sealing ring; the comb tooth sealing annular cover is arranged on the outer side of the motor shaft; the outer wall of one side of the comb tooth sealing annular cover is fixedly connected with the clutch housing; a sealing cavity is arranged between the comb tooth sealing annular cover and the motor shaft; a comb tooth sealing section is vertically arranged in the comb tooth sealing annular cover; the comb tooth sealing section is connected with a comb tooth sealing ring.
Further, the top of the comb tooth sealing annular cover is provided with an air hole; a negative pressure compensation air duct is vertically arranged above the air hole.
Further, the bottom of the comb tooth sealing annular cover is provided with an oil outlet; and a lubricating oil collecting pipe is vertically arranged on the oil outlet hole.
Further, a valve is arranged on the lubricating oil collecting pipe; an oil storage box is arranged at the bottom of the lubricating oil collecting pipe.
Furthermore, the comb tooth sealing annular cover and the comb tooth sealing section are of an integrated molding structure; the comb tooth sealing annular cover and the comb tooth sealing section are made of aluminum alloy.
Furthermore, the comb tooth sealing ring is made of rubber.
Furthermore, two groups of comb tooth sealing sections and two groups of comb tooth sealing rings are arranged; respectively located at the two ends of the position of the air hole.
Compared with the prior art, the utility model discloses following beneficial effect has at least: the utility model designs a centrifugal compressor shaft seal structure, which is characterized in that a radial seal is additionally arranged on the existing motor shaft according to the structural characteristics of a connecting shaft between a motor and a clutch, thereby reducing the suction effect of the suction negative pressure of a motor fan on the lubricating oil of the clutch; a negative pressure compensation air duct communicated to the outside of a negative pressure area of the motor fan is designed on the added comb tooth sealing annular cover, so that negative pressure generated by the motor fan sucking the clutch shaft seal is compensated. The utility model discloses thoroughly solve circulation gas compressor clutch shaft seal lubricating oil leakage problem, avoid because of the parking that lubricating oil leaked and caused or other safe risk occurences of failure.
Drawings
FIG. 1 is a schematic sectional view of the present invention;
fig. 2 is an enlarged schematic view of the shaft seal sealing device.
In the figure: a motor 1; a clutch 2; a shaft seal sealing device 3; a motor shaft 4; a motor fan 5; the comb teeth seal the annular cover 6; a comb tooth sealing ring 7; sealing the cavity 8; a comb sealing section 9; an air hole 10; a negative pressure compensation air duct 11; an oil outlet 12; a lubricating oil collecting pipe 13; a valve 14; and an oil reservoir 15.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1-2:
example 1:
a centrifugal compressor shaft seal structure, motor 1, clutch 2, characterized by that, include with the shaft seal sealing means 3; the motor 1 is connected with the clutch 2 through a motor shaft 4; the tail part of the motor 1 is provided with a motor fan 5; the tail end of the motor shaft 4 is hermetically connected with the clutch 2 in a comb tooth sealing mode; a shaft seal sealing device 3 is arranged outside the motor shaft 4; the shaft seal sealing device 3 comprises a comb seal annular cover 6, a comb seal section 9 and a comb seal ring 7; the comb tooth sealing annular cover 6 is arranged on the outer side of the motor shaft 4; the outer wall of one side of the comb tooth sealing annular cover 6 is fixedly connected with the clutch housing; a sealing cavity 8 is arranged between the comb tooth sealing annular cover 6 and the motor shaft 4; a comb tooth sealing section 9 is vertically arranged in the comb tooth sealing annular cover 6; the comb tooth sealing section 9 is connected with a comb tooth sealing ring 7. The distance between the original clutch and the motor fan in the air suction direction is only 200mm, and the clutch is positioned in a negative pressure area of the motor fan, so that the leakage amount of the clutch lubricating oil leaking along with the shaft seal is about 30 liters per day, and the safe and stable operation of the compressor is directly threatened. The comb tooth sealing annular cover is designed and installed at the motor end of the clutch, the comb tooth sealing ring and the ruler comb sealing section are added inside the comb tooth sealing ring and the ruler comb sealing section, and the suction operation of a motor fan on the clutch shaft seal is reduced。
Example 2:
on the basis of the embodiment 1, the air hole 10 is arranged at the top of the comb tooth sealing annular cover 6; a negative pressure compensation air duct 11 is vertically arranged above the air hole 10. The clearance area between a motor shaft and a comb tooth sealing ring is obtained through calculation, a hole which is 10 times larger than the area is formed in the top of a newly-added comb tooth sealing annular cover, and a negative pressure compensation air duct is hermetically arranged on the hole, so that air outside a negative pressure area of a motor fan can smoothly enter a sealing cavity to compensate negative pressure generated by suction of the motor fan.
Example 3:
on the basis of the embodiment 1-2, the oil outlet hole 12 is arranged at the bottom of the comb tooth sealing annular cover 6; the oil outlet hole 12 is vertically provided with a lubricating oil collecting pipe 13.
Example 4:
on the basis of the embodiments 1 to 3, the lubricating oil collecting pipe 13 is provided with a valve 14; the bottom of the lubricating oil collecting pipe 13 is provided with an oil storage box 15.
Example 5:
on the basis of the embodiments 1-4, the comb tooth sealing annular cover 6 and the comb tooth sealing section 9 are of an integrated molding structure; the comb tooth sealing annular cover 6 and the comb tooth sealing section 9 are made of aluminum alloy.
Example 6:
in examples 1 to 5, the comb seal 7 is made of rubber.
Example 7:
on the basis of the embodiments 1-6, two groups of comb tooth sealing sections 9 and comb tooth sealing rings 7 are arranged; respectively at both ends of the location of the air hole 10.
Through observation operation of one year, the bottom oil drain valve collects and discharges oil from the early period every week, and collects and discharges oil every month instead of collecting and discharging oil because the oil is not collected, and any oil is still not collected. The leakage is not found at the site, and the oil supplementing record and the oil level reduction are not generated in the lubricating oil tank of the compressor. Therefore, the invention aims to be realized through the innovative modification.
The utility model designs a centrifugal compressor shaft seal structure, which is characterized in that a radial seal is additionally arranged on the existing motor shaft according to the structural characteristics of a connecting shaft between a motor and a clutch, thereby reducing the suction effect of the suction negative pressure of a motor fan on the lubricating oil of the clutch; a negative pressure compensation air duct communicated to the outside of a negative pressure area of the motor fan is designed on the added comb tooth sealing annular cover, so that negative pressure generated by the motor fan sucking the clutch shaft seal is compensated. The utility model discloses thoroughly solve circulation gas compressor clutch shaft seal lubricating oil leakage problem, avoid because of the parking that lubricating oil leaked and caused or other safe risk occurences of failure.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (7)
1. A centrifugal compressor shaft seal sealing structure, a motor (1) and a clutch (2), is characterized by comprising a shaft seal sealing device (3); the motor (1) is connected with the clutch (2) through a motor shaft (4); the tail part of the motor (1) is provided with a motor fan (5); the tail end of the motor shaft (4) is hermetically connected with the clutch (2) in a comb tooth sealing mode; a shaft seal sealing device (3) is arranged outside the motor shaft (4); the shaft seal sealing device (3) comprises a comb tooth sealing annular cover (6), a comb tooth sealing section (9) and a comb tooth sealing ring (7); the comb tooth sealing annular cover (6) is arranged on the outer side of the motor shaft (4); the outer wall of one side of the comb tooth sealing annular cover (6) is fixedly connected with the shell of the clutch (2); a sealing cavity (8) is arranged between the comb tooth sealing annular cover (6) and the motor shaft (4); a comb tooth sealing section (9) is vertically arranged in the comb tooth sealing annular cover (6); the comb tooth sealing section (9) is connected with a comb tooth sealing ring (7).
2. The shaft seal sealing structure of the centrifugal compressor according to claim 1, characterized in that the air hole (10) is arranged at the top of the comb tooth sealing annular cover (6); a negative pressure compensation air duct (11) is vertically arranged above the air hole (10).
3. The shaft seal sealing structure of the centrifugal compressor according to claim 1, characterized in that the oil outlet hole (12) is provided at the bottom of the comb tooth sealing annular cover (6); a lubricating oil collecting pipe (13) is vertically arranged on the oil outlet hole (12).
4. A seal structure for shaft seal of centrifugal compressor according to claim 3, characterized in that said lubricant collecting pipe (13) is provided with a valve (14); an oil storage box (15) is arranged at the bottom of the lubricating oil collecting pipe (13).
5. The shaft seal sealing structure of the centrifugal compressor according to claim 1, characterized in that the comb seal annular cover (6) and the comb seal segment (9) are an integrated molding structure; the comb tooth sealing annular cover (6) and the comb tooth sealing section (9) are made of aluminum alloy.
6. The shaft seal sealing structure of the centrifugal compressor according to claim 1, wherein the comb-tooth sealing ring (7) is made of rubber.
7. The shaft seal sealing structure of the centrifugal compressor according to claim 2, characterized in that the comb-tooth sealing segments (9) and the comb-tooth sealing rings (7) are provided in two groups; are respectively positioned at the two ends of the position of the air hole (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020312877.5U CN212177448U (en) | 2020-03-13 | 2020-03-13 | Centrifugal compressor shaft seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020312877.5U CN212177448U (en) | 2020-03-13 | 2020-03-13 | Centrifugal compressor shaft seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212177448U true CN212177448U (en) | 2020-12-18 |
Family
ID=73777155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020312877.5U Active CN212177448U (en) | 2020-03-13 | 2020-03-13 | Centrifugal compressor shaft seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212177448U (en) |
-
2020
- 2020-03-13 CN CN202020312877.5U patent/CN212177448U/en active Active
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