CN219012955U - Air seal structure and vapor compressor - Google Patents
Air seal structure and vapor compressor Download PDFInfo
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- CN219012955U CN219012955U CN202223067511.4U CN202223067511U CN219012955U CN 219012955 U CN219012955 U CN 219012955U CN 202223067511 U CN202223067511 U CN 202223067511U CN 219012955 U CN219012955 U CN 219012955U
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Abstract
The utility model relates to the technical field of vapor compressors, and provides an air sealing structure and a vapor compressor. The gas seal structure includes: air seal seat, air seal seat includes: a plurality of air-filling holes; the inflation cavities are connected with the inflation holes in a one-to-one correspondence manner. The vapor compressor includes: the gear box is provided with a rotating shaft, and a bearing is arranged on the rotating shaft; the impeller is connected with one end of the rotating shaft; a volute; the air seal structure is arranged between the rotating shaft and the impeller and is positioned on the end face flange of the volute; the oil seal is arranged between the air seal structure and the bearing. The utility model provides an air seal structure and a vapor compressor, which comprise an air seal seat, wherein the air seal seat is provided with a plurality of air filling holes and a plurality of air filling cavities, and a plurality of gases are introduced into the air filling cavities through the air filling holes, so that the sealing effect is improved, zero leakage of the gases is truly realized, and the air seal structure is suitable for an upper-lower split type air seal seat structure.
Description
Technical Field
The utility model relates to the technical field of vapor compressors, in particular to an air sealing structure and a vapor compressor.
Background
At present, the steam compressor can leak gas due to the fact that high pressure exists in an impeller cavity and a volute, and the gas flows into a gear box along a high-speed shaft through an impeller wheel back, so that a labyrinth gas seal structure is usually arranged at the wheel back, and the leakage quantity of the gas is controlled in a reasonable range. In addition, since the sliding bearing is adopted, the lubricating oil also has the leakage problem and can enter the volute even along the high-speed shaft, and therefore, the shaft end oil seal is also required to be arranged on the shaft. In the prior art, an oil seal and an air seal are arranged between the impeller and the bearing. If the leaked gas in the gas seal is fused with the leaked lubricating oil in the oil seal, the lubricating oil can be emulsified, the quality of the oil product is greatly affected, and the service life of the lubricating oil is reduced.
At present, as the sealing gap of the labyrinth air sealing structure is larger, only one sealing gas is filled, so that the gas cannot be completely sealed, the sealing effect is poor, and zero leakage of the gas cannot be really realized.
Disclosure of Invention
The utility model provides a gas seal structure and a vapor compressor, which are used for solving the defect of poor sealing effect of the gas seal structure in the prior art.
The utility model provides an air seal structure, comprising: the gas seal seat, the gas seal seat includes:
a plurality of air-filling holes;
the inflatable chambers are connected with the inflatable holes in a one-to-one correspondence mode.
According to the air seal structure provided by the utility model,
the inflation port includes:
the first air charging hole is used for introducing sealing gas;
the second air charging hole is used for introducing isolation gas;
the inflation cavity comprises:
a first inflation cavity, the first inflation cavity being in communication with the first inflation aperture;
and the second air inflation cavity is communicated with the second air inflation hole.
According to the air seal structure provided by the utility model, the air seal structure further comprises: the sealing ring is sleeved on the periphery of the air sealing seat.
According to the air seal structure provided by the utility model, the air seal seat is of a hollow structure and is used for installing the rotating shaft;
further comprises: the shaft sleeve is arranged in the air seal seat and is suitable for being sleeved on the rotating shaft.
According to the air seal structure provided by the utility model, the air seal structure further comprises: the labyrinth type channel is arranged between the air seal seat and the shaft sleeve.
According to the air seal structure provided by the utility model, the air seal seat is also provided with the mounting hole, and is suitable for being connected with the volute through the fastening piece.
According to the air seal structure provided by the utility model, the air seal structure further comprises:
the first connector is arranged on the first air charging hole;
and the second connector is arranged on the second air charging hole.
According to the air seal structure provided by the utility model, the air seal seat is an integrated structure of an aluminum alloy forging piece.
The present utility model also provides a vapor compressor comprising:
the gear box is provided with a rotating shaft, and a bearing is arranged on the rotating shaft;
the impeller is connected with one end of the rotating shaft;
a volute;
according to the air seal structure, the air seal structure is arranged between the rotating shaft and the impeller and is positioned on the end face flange of the volute;
and the oil seal is arranged between the air seal structure and the bearing.
According to the air seal structure provided by the utility model, the air seal structure further comprises: the inflation devices are connected with the inflation holes in a one-to-one correspondence mode.
The utility model provides an air seal structure, which comprises an air seal seat, wherein the air seal seat is provided with a plurality of air filling holes and a plurality of air filling cavities, and a plurality of gases are introduced into the air filling cavities through the air filling holes, for example, sealing gases and/or isolating gases can be introduced into the corresponding air filling cavities, so that the sealing effect is improved, zero leakage of the gases is truly realized, and the air seal structure is suitable for an upper-lower split type air seal seat structure.
The vapor compressor provided by the utility model has the same advantages as above due to the inclusion of the air seal structure of the embodiment.
Drawings
In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of a gas seal structure provided by the present utility model;
FIG. 2 is a left side view of the gas seal structure of FIG. 1;
fig. 3 is a cross-sectional view of a vapor compressor provided by the present utility model.
Reference numerals:
41: an air seal seat; 42: a fastener; 43: a seal ring; 44: a first inflation chamber; 45: a second plenum chamber; 46: a first air charging hole; 47: a second air charging hole;
1: an impeller; 2: a rotating shaft; 3: a volute; 4: an air seal structure; 5: a shaft sleeve; 6: an oil seal; 7: and (3) a bearing.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
A gas seal structure 4 of the present utility model is described below in conjunction with fig. 1 and 2. Comprising the following steps: air seal seat 41, air seal seat 41 includes: a plurality of inflation holes and a plurality of inflation chambers.
Wherein, the inflation cavity is connected with the inflation hole in a one-to-one correspondence.
Taking two inflation holes and two inflation chambers as examples in fig. 1 and 2. The inflation hole includes: a first air charge hole 46 and a second air charge hole 47. The first air-filling hole 46 is used for filling sealing air, and the second air-filling hole 47 is used for filling isolating air. The inflation cavity comprises: a first plenum chamber 44 and a second plenum chamber 45. The first plenum chamber 44 communicates with the first plenum chamber 46; the second inflation chamber 45 communicates with the second inflation chamber 47.
Specifically, the air seal seat 41 is of a unitary structure, and has a first air-filling hole 46 and a second air-filling hole 47 provided on the outer surface thereof, and a first air-filling cavity 44 and a second air-filling cavity 45 provided inside thereof. The first air-filling hole 46 is used for filling the sealing air into the first air-filling cavity 44, and the second air-filling hole 47 is used for filling the second air-filling cavity 45 with, for example, isolation air. Typically, the seal gas is steam and the spacer gas is compressed air.
Further, the first air-filling chamber 44 and the second air-filling chamber 45 are arranged along the axial direction of the air-sealing seat 41, and the first air-filling chamber 46 and the second air-filling chamber 47 extend to the positions of the first air-filling chamber 44 and the second air-filling chamber 45 respectively towards the inside of the air-sealing seat 41.
It should be understood that the third air charging hole and the third air charging cavity may be processed according to actual needs, and the number of the air charging holes and the air charging cavities may be determined to enhance the sealing effect.
The utility model provides an air seal structure 4, which comprises an air seal seat 41, wherein the air seal seat 41 is provided with a plurality of air charging holes and a plurality of air charging cavities, a plurality of gases are introduced into the air charging cavities through the air charging holes, for example, sealing gases and/or isolating gases can be introduced into the corresponding air charging cavities, so that the sealing effect is improved, zero leakage of the gases is truly realized, and the air seal structure is suitable for an upper-lower split type air seal seat structure.
In one embodiment of the present utility model, the gas seal structure 4 further includes: the sealing ring 43 is sleeved on the outer periphery of the air seal seat 41. In this embodiment, the sealing ring 43 is an O-ring, which is sleeved on the periphery of the air seal seat 41, and is made of high-temperature resistant fluororubber.
In one embodiment of the present utility model, the air seal seat 41 is a hollow structure for installing the rotating shaft 2; further comprises: the shaft sleeve 5 is arranged in the air seal seat 41, is suitable for being sleeved on the rotating shaft 2, and plays a role in protecting the rotating shaft 2. Specifically, the sleeve 5 may be mounted to the interior of the air seal 41 by heat fitting, interference connection, bolting or tolerance bands, among other means.
In one embodiment of the present utility model, the gas seal structure 4 further includes: labyrinth type passage, labyrinth type passage locates between atmoseal seat 41 and axle sleeve 5. Specifically, two labyrinth passages are formed between the air seal seat 41 and the sleeve 5.
In one embodiment of the utility model, the air seal 41 is further provided with mounting holes adapted to be connected to the volute 3 by fasteners 42. In this embodiment, the air seal seat 41 is provided with a mounting hole, and the fastener 42 may be a bolt, and the air seal seat 41 is fixed on the end face flange of the volute 3 by passing through the mounting hole with the bolt.
In one embodiment of the present utility model, the gas seal structure 4 further includes: a first joint and a second joint. The first connector is arranged on the first air charging hole 46; the second connector is provided on the second air charging hole 47. In this embodiment, the first connector and the second connector are ferrule connectors, and are respectively and correspondingly installed on the first air charging hole 46 and the second air charging hole 47, and are used for being connected with corresponding air charging devices.
In one embodiment of the present utility model, the air seal seat 41 is an integral structure of an aluminum alloy forging, and is of a unitary structure, soft and easy to process. Of course, the air seal seat 41 can be made of other softer materials, and is easy to process.
A vapor compressor of the present utility model is described below with reference to fig. 3. The vapor compressor includes: the gear box, the impeller 1, the volute 3, the oil seal 6 and the air seal structure 4 in the above embodiment.
The gear box is provided with a rotating shaft 2 (a high-speed shaft can be adopted), and a bearing 7 is arranged on the rotating shaft 2; the impeller 1 is connected with one end of the rotating shaft 2; the air seal structure 4 is arranged between the rotating shaft 2 and the impeller 1 and is positioned on an end face flange of the volute 3; the oil seal 6 is arranged between the air seal structure 4 and the bearing 7.
The vapor compressor provided by the utility model has the same advantages as above due to the inclusion of the air seal structure 4 of the embodiment.
In one embodiment of the present utility model, the vapor compressor further comprises: the inflation devices are connected with the inflation holes in a one-to-one correspondence manner. Taking two air charging holes as an example, a first air charging device and a second air charging device are provided, the first air charging device is connected with the first air charging hole 46 for introducing sealing air into the first air charging hole 46, and the second air charging device is connected with the second air charging hole 47 for introducing isolating air into the second air charging hole 47.
In one embodiment of the present utility model, the vapor compressor further comprises: a first valve, a first pressure relief valve, a second valve, and a second pressure relief valve. The first valve and the first pressure reducing valve are connected between the first inflator and the first inflation hole 46, and control the seal air pressure and flow rate; the second valve and the second pressure reducing valve are connected between the second inflator and the second inflation port 47, and control the pressure and flow rate of the isolation gas.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (9)
1. An air seal structure, characterized by comprising: the gas seal seat, the gas seal seat is monolithic structure, the gas seal seat includes:
the first air charging hole is used for introducing sealing air, and one end of the first air charging hole is positioned on the end face of the air seal seat;
the second air charging hole is used for introducing isolation air, and one end of the second air charging hole is positioned on the end face of the air seal seat;
the first air charging cavity is communicated with the other end of the first air charging hole;
the second air inflation cavity is communicated with the other end of the second air inflation hole, and the first air inflation cavity and the second air inflation cavity are arranged along the axial direction of the air seal seat.
2. The gas seal structure of claim 1, further comprising: the sealing ring is sleeved on the periphery of the air sealing seat.
3. The air seal structure according to claim 1, wherein the air seal seat is a hollow structure for installing a rotating shaft;
further comprises: the shaft sleeve is arranged in the air seal seat and is suitable for being sleeved on the rotating shaft.
4. A gas seal structure according to claim 3, further comprising: the labyrinth type channel is arranged between the air seal seat and the shaft sleeve.
5. The gas seal structure of claim 4, wherein the gas seal seat is further provided with a mounting hole adapted to be connected to the volute by a fastener.
6. The gas seal structure of claim 1, further comprising:
the first connector is arranged on the first air charging hole;
and the second connector is arranged on the second air charging hole.
7. The gas seal structure according to any one of claims 1 to 6, wherein the gas seal holder is an integral structure of an aluminum alloy forging.
8. A vapor compressor, comprising:
the gear box is provided with a rotating shaft, and a bearing is arranged on the rotating shaft;
the impeller is connected with one end of the rotating shaft;
a volute;
the gas seal structure according to any one of claims 1 to 7, which is provided between the rotating shaft and the impeller and on an end face flange of the volute;
and the oil seal is arranged between the air seal structure and the bearing.
9. The vapor compressor of claim 8, further comprising: the inflation devices are connected with the inflation holes in a one-to-one correspondence mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223067511.4U CN219012955U (en) | 2022-11-18 | 2022-11-18 | Air seal structure and vapor compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223067511.4U CN219012955U (en) | 2022-11-18 | 2022-11-18 | Air seal structure and vapor compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219012955U true CN219012955U (en) | 2023-05-12 |
Family
ID=86236180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223067511.4U Active CN219012955U (en) | 2022-11-18 | 2022-11-18 | Air seal structure and vapor compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219012955U (en) |
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2022
- 2022-11-18 CN CN202223067511.4U patent/CN219012955U/en active Active
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