CN215979506U - Impeller sealing device of turbo expander - Google Patents
Impeller sealing device of turbo expander Download PDFInfo
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- CN215979506U CN215979506U CN202121808325.4U CN202121808325U CN215979506U CN 215979506 U CN215979506 U CN 215979506U CN 202121808325 U CN202121808325 U CN 202121808325U CN 215979506 U CN215979506 U CN 215979506U
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- impeller
- diffuser
- seal cover
- kept away
- sealing
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Abstract
The utility model discloses an impeller sealing device of a turbo expander, which comprises a sealing sleeve, wherein a connecting sleeve is arranged on the outer surface of the sealing sleeve, an outer shell is arranged on one side of the connecting sleeve, which is far away from the sealing sleeve, a diffuser is arranged on one side of the outer shell, which is far away from the connecting sleeve, a sealing gasket is fixedly arranged on the outer surface of the diffuser, a rotating shaft is rotatably arranged on the inner side surface of the sealing sleeve, a fixed shaft is arranged at one end of the rotating shaft, which is far away from the sealing sleeve, and a pressure distributing head is fixedly arranged at one end of the mounting shaft, which is far away from the fixed shaft. According to the utility model, the pressure dividing head is arranged, so that high-pressure gas entering from the outside can be broken, the external high-pressure gas can be uniformly distributed on the impeller, the impeller is prevented from being damaged due to the impact of the high-pressure gas on the impeller, the joint of the outer shell and the diffuser is sealed by the sealing gasket, the high-pressure gas in the diffuser is prevented from leaking, and the injury to workers is avoided.
Description
Technical Field
The utility model relates to the technical field of turbo expanders, in particular to an impeller sealing device of a turbo expander.
Background
The turboexpander is a key part machine necessary for obtaining cold energy of air separation equipment, natural gas (petroleum gas) liquefaction separation equipment, low-temperature crushing equipment and the like, and is a heart for ensuring the stable operation of the whole set of equipment. The main principle is that gas with certain pressure is adiabatically expanded in a turbine expander to do work outwards to consume internal energy of the gas, so that the gas is cooled strongly to achieve the purpose of refrigeration. The cylinder body is heated when the cylinder is used for pumping air normally, because the piston compresses the gas to release heat, if the principle is similar to that of an expander (more precisely, a piston expander), the energy output by the turboexpander is recovered by a coaxial compressor or consumed by a brake fan, and the turboexpander can be divided into an axial-flow turboexpander and a radial-flow turboexpander according to the structure. In the use process of the existing impeller sealing device, external high-pressure gas continuously blows the impeller to rotate, so that the impeller bears large force and is damaged in use; in addition, when the existing impeller sealing device is used, gas guided by the impeller leaks from the joint of the diffuser and the external shell, and workers are injured.
SUMMERY OF THE UTILITY MODEL
In view of the disadvantages of the prior art, an object of the present invention is to provide an impeller sealing device for a turbo expander, which can uniformly distribute external high-pressure gas to an impeller and prevent leakage of high-pressure gas in a diffuser.
In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides an impeller sealing device of turbo expander, includes the seal cover, the surface of seal cover is provided with the adapter sleeve, one side that the seal cover was kept away from to the adapter sleeve is provided with outside casing, one side that the adapter sleeve was kept away from to outside casing is provided with the diffuser, the surface fixed mounting of diffuser has sealed the pad, the medial surface of seal cover rotates and installs the axis of rotation, the one end that the seal cover was kept away from to the axis of rotation is provided with the fixed axle, the one end that the axis of rotation was kept away from to the fixed axle is provided with the installation axle, the one end fixed mounting that the fixed axle was kept away from to the installation axle has the pressure dividing head.
In order to better implement the utility model, further, an inner ring bearing is arranged on the outer surface of the rotating shaft, and a fixing frame is rotatably arranged on the outer surface of the inner ring bearing.
As a preferable technical scheme of the utility model, the inner side surface of the fixing frame is provided with a ball in a rolling way, and the ball is made of high-chromium steel.
In order to better realize the utility model, further, the inner side surface of the connecting sleeve is provided with an installation opening, and the outer surface of the installation shaft is provided with an impeller.
In order to better implement the utility model, further, the inner side surface of the outer shell is provided with a diversion trench, and the outer surface of the outer shell is fixedly provided with a mounting pad.
In order to better realize the utility model, further, a fixing bolt is fixedly installed on the inner side surface of the diffuser, and flow guide openings are formed in the sealing sleeve, the connecting sleeve and the flow guide groove.
In order to better realize the utility model, further, an outer ring bearing is rotatably mounted on the outer surface of the fixing frame, and the sealing gasket is made of butyl rubber.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
(1) according to the utility model, the pressure dividing head is arranged, so that high-pressure gas entering from the outside can be broken, the external high-pressure gas can be uniformly distributed on the impeller, and the impeller is prevented from being damaged due to the impact of the high-pressure gas on the impeller;
(2) according to the utility model, the sealing gasket is arranged to seal the joint of the outer shell and the diffuser, so that high-pressure gas in the diffuser is prevented from leaking, and the injury to workers is avoided;
(3) the utility model solves the problems of damage of the impeller and high-pressure gas leakage at the joint when the impeller bears large force, has reasonable structure and arrangement, perfect functions, good safety and long service life, and is suitable for wide popularization and application.
Drawings
Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic view of a part of the enlarged structure at A in the present invention;
fig. 3 is a front view schematically showing the structure of the impeller of the present invention.
Wherein: the device comprises a sealing sleeve 1, a rotating shaft 2, an inner ring bearing 3, a fixing frame 4, a ball 5, an outer ring bearing 6, a connecting sleeve 7, a mounting port 8, a fixing shaft 9, a mounting shaft 10, an impeller 11, an outer shell 12, a diffuser 13, a pressure dividing head 14, a diversion trench 15, a sealing gasket 16, a mounting pad 17, a fixing bolt 18 and a diversion port 19.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the definitions of "first" and "second" are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly including one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
the main structure of this embodiment, as shown in fig. 1-3, including seal cover 1, the surface of seal cover 1 is provided with adapter sleeve 7, one side that seal cover 1 was kept away from to adapter sleeve 7 is provided with outside casing 12, one side that adapter sleeve 7 was kept away from to outside casing 12 is provided with diffuser 13, the fixed surface mounting of diffuser 13 has sealed the pad 16, axis of rotation 2 is installed in the medial surface rotation of seal cover 1, the one end that seal cover 1 was kept away from to axis of rotation 2 is provided with fixed axle 9, the one end that axis of rotation 2 was kept away from to fixed axle 9 is provided with installation axle 10, the one end fixed mounting that fixed axle 9 was kept away from to installation axle 10 has minute pressure head 14.
Wherein, adapter sleeve 7 is used for connecting seal cover 1 and outside casing 12, and outside casing 12 provides the mounted position for diffuser 13, and diffuser 13 can restrict flowing gas, and sealed 16 plays sealed effect, prevents the air current leakage in diffuser 13, and axis of rotation 2 is connected with the inside spare part of device, and fixed axle 9 can drive axis of rotation 2 and rotate, and installation axle 10 is convenient for impeller 11 and installs fixedly, divides pressure head 14 to bear the pressure of blowing in the air current.
The specific embodiment is that the external high-pressure gas enters the diffuser 13, pushes the impeller 11 to rotate, meanwhile, the lower rotating shaft 2 is driven by the fixed shaft 9 to start rotating, so as to drive the internal parts of the device to rotate, in the process that the high-pressure gas drives the impeller 11 to rotate, the pressure divider 14 can break the high-pressure gas entering from the outside, so that the high-pressure gas outside can be uniformly distributed on the impeller 11, the damage of the impeller 11 caused by the impact of the high-pressure gas on the impeller 11 is avoided, then the gas expanded by the impeller 11 enters the diversion trench 15, the steering is completed in the diversion trench 15 and enters the output end through the diversion port 19, the mechanical energy is output at the output end and the low temperature is obtained, in the working process of the device, the sealing gasket 16 seals the joint of the outer shell 12 and the diffuser 13, so that high-pressure gas in the diffuser 13 is prevented from leaking, and the injury to workers is avoided.
Example 2:
in the present embodiment, the structure of the rotating shaft 2 is further defined on the basis of the above embodiments, as shown in fig. 1 and fig. 2, an inner ring bearing 3 is disposed on the outer surface of the rotating shaft 2, and a fixing frame 4 is rotatably mounted on the outer surface of the inner ring bearing 3. The inner ring bearing 3 is convenient for installing the fixing frame 4, and the fixing frame 4 prevents the inner ring bearing 3 from moving between the inner ring bearing 3 and the outer ring bearing 6. Other parts of this embodiment are the same as those of the above embodiment, and are not described again.
Example 3:
in this embodiment, the structure of the fixing frame 4 is further limited on the basis of the above embodiment, as shown in fig. 2, the balls 5 are mounted on the inner side surface of the fixing frame 4 in a rolling manner, and the material of the balls 5 is high chrome steel. The ball 5 can enable the bearing to rotate freely, and the ball 5 made of high-chromium steel is wear-resistant and has long service life. Other parts of this embodiment are the same as those of the above embodiment, and are not described again.
Example 4:
in this embodiment, on the basis of the above embodiment, the structure of the connecting sleeve 7 is further limited, as shown in fig. 2, the inner side surface of the connecting sleeve 7 is provided with a mounting port 8, and the outer surface of the mounting shaft 10 is provided with an impeller 11. The mounting opening 8 can provide the space required for mounting the bearing, and the impeller 11 can scatter the gas to expand the gas. Other parts of this embodiment are the same as those of the above embodiment, and are not described again.
Example 5:
in this embodiment, on the basis of the above embodiment, the structure of the outer casing 12 is further defined, as shown in fig. 1, the inner side surface of the outer casing 12 is provided with a diversion trench 15, and the outer surface of the outer casing 12 is fixedly provided with a mounting pad 17. The guide slots 15 guide the expanding flow and the mounting pads 17 prevent play between the diffuser 13 and the outer housing 12 during the fixing process. Other parts of this embodiment are the same as those of the above embodiment, and are not described again.
Example 6:
in this embodiment, on the basis of the above embodiment, the structure of the diffuser 13 is further limited, as shown in fig. 1, a fixing bolt 18 is fixedly installed on the inner side surface of the diffuser 13, and diversion ports 19 are respectively arranged inside the sealing sleeve 1, inside the connecting sleeve 7, and inside the diversion trench 15. The fixing bolt 18 fixes the outer casing 12 and the diffuser 13 together, and the guide opening 19 enables the air flow to flow in the device. Other parts of this embodiment are the same as those of the above embodiment, and are not described again.
Example 7:
in this embodiment, based on the above embodiment, the structure of the fixing frame 4 is further limited, as shown in fig. 1, an outer ring bearing 6 is rotatably mounted on the outer surface of the fixing frame 4, and the material of the sealing gasket 16 is butyl rubber. The outer ring bearing 6 ensures that the rotating shaft 2 cannot influence the sealing sleeve 1 in the rotating process, and the sealing gasket 16 made of butyl rubber has good sealing effect. Other parts of this embodiment are the same as those of the above embodiment, and are not described again.
It is to be understood that the operation principle and operation of the structure of the impeller sealing device of the turboexpander according to an embodiment of the present invention, such as the rotating shaft 2 and the balls 5, are well known to those skilled in the art and will not be described in detail herein.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. The utility model provides an impeller sealing device of turbo expander, includes seal cover (1), its characterized in that: the utility model discloses a seal cover, including seal cover (1), one side that seal cover (1) was kept away from in seal cover (1) is provided with outside casing (12), one side that seal cover (7) were kept away from in outside casing (12) is provided with diffuser (13), the outer fixed surface of diffuser (13) installs sealed pad (16), axis of rotation (2) are installed in the medial surface rotation of seal cover (1), the one end that seal cover (1) was kept away from in axis of rotation (2) is provided with fixed axle (9), the one end that axis of rotation (2) were kept away from in fixed axle (9) is provided with installation axle (10), the one end fixed mounting that fixed axle (9) were kept away from in installation axle (10) has pressure divider head (14).
2. The impeller seal device of a turboexpander according to claim 1, wherein: the outer surface of the rotating shaft (2) is provided with an inner ring bearing (3), and the outer surface of the inner ring bearing (3) is rotatably provided with a fixing frame (4).
3. The impeller seal device of a turboexpander according to claim 2, wherein: the inner side surface of the fixing frame (4) is provided with a ball (5) in a rolling way, and the ball (5) is made of high-chromium steel.
4. The impeller seal device of a turboexpander according to claim 1, wherein: the inner side surface of the connecting sleeve (7) is provided with a mounting opening (8), and the outer surface of the mounting shaft (10) is provided with an impeller (11).
5. The impeller seal device of a turboexpander according to claim 1, wherein: the inner side surface of the outer shell (12) is provided with a diversion trench (15), and the outer surface of the outer shell (12) is fixedly provided with a mounting pad (17).
6. The impeller seal device of a turboexpander according to claim 1, wherein: the inner side surface of the diffuser (13) is fixedly provided with a fixing bolt (18), and the interior of the sealing sleeve (1), the interior of the connecting sleeve (7) and the interior of the diversion trench (15) are respectively provided with a diversion port (19).
7. The impeller seal device of a turboexpander according to claim 2, wherein: the outer surface of the fixing frame (4) is rotatably provided with an outer ring bearing (6), and the sealing gasket (16) is made of butyl rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121808325.4U CN215979506U (en) | 2021-08-04 | 2021-08-04 | Impeller sealing device of turbo expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121808325.4U CN215979506U (en) | 2021-08-04 | 2021-08-04 | Impeller sealing device of turbo expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215979506U true CN215979506U (en) | 2022-03-08 |
Family
ID=80513953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121808325.4U Active CN215979506U (en) | 2021-08-04 | 2021-08-04 | Impeller sealing device of turbo expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215979506U (en) |
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2021
- 2021-08-04 CN CN202121808325.4U patent/CN215979506U/en active Active
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