CN214617029U - Isolation gas sealing structure for process gas compressor - Google Patents
Isolation gas sealing structure for process gas compressor Download PDFInfo
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- CN214617029U CN214617029U CN202120530124.6U CN202120530124U CN214617029U CN 214617029 U CN214617029 U CN 214617029U CN 202120530124 U CN202120530124 U CN 202120530124U CN 214617029 U CN214617029 U CN 214617029U
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Abstract
The utility model relates to an isolation gas sealing structure for a process gas compressor, which comprises a labyrinth seal ring sleeved on the high-pressure side of a rotating shaft of the compressor, wherein one end of the labyrinth seal ring close to the atmosphere side is connected with a carbon ring sealing structure, and the carbon ring sealing structure comprises a first sealing unit and at least three groups of second sealing units; the first sealing unit comprises a first sealing seat and a first carbon ring corresponding to the first sealing seat; every group second seal unit all includes second carbon ring seat and the second carbocycle that corresponds with it, all is equipped with the installation round pin on first carbocycle and the second carbocycle, and first carbocycle and second carbocycle are kept away from compressor shaft side and are all equipped with the extension spring. The utility model discloses an keep apart airtight structure for process gas compressor is gradient reducing pressure in proper order after through multichannel carbocycle, prevents that process gas from spilling over through connecting the isolation gas that atmospheric pressure is greater than process gas simultaneously to discharge unnecessary isolation gas through the atmospheric through-hole, further prevent that process gas from leaking, play sealed process gas's mesh.
Description
Technical Field
The utility model belongs to the compressor field especially relates to an keep apart airtight structure for process gas compressor.
Background
The sealing structure of the traditional double-screw air compressor is a lip seal structure, and is suitable for the working condition that air can be subjected to slight leakage. However, process gases generally cannot accept leakage loss, some of the process gases are toxic gases, reliable sealing is needed to ensure no leakage, and the traditional lip seal structure cannot ensure the sealing requirement of a process gas compressor, so that potential safety hazards are easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome prior art's seal structure can't satisfy the defect that technology gas compressor safety needs, provide an isolation gas seal structure for technology gas compressor.
The utility model discloses a following technical scheme solves above-mentioned technical problem:
an isolation gas sealing structure for a process gas compressor is characterized by comprising a labyrinth seal ring sleeved on a rotating shaft of the compressor, wherein one end, close to the atmosphere side, of the labyrinth seal ring is connected with a carbon ring sealing structure, and the carbon ring sealing structure comprises a first sealing unit and at least three groups of second sealing units; the first sealing unit comprises a first sealing seat and a first carbon ring corresponding to the first sealing seat; every group the second seal unit all includes second carbon ring seat and the second carbocycle that corresponds with it, first carbocycle with all be equipped with the installation round pin on the second carbocycle, first carbocycle with the compressor shaft side is kept away from to the second carbocycle all is equipped with the extension spring.
Furthermore, the outer peripheral surface of labyrinth seal circle and the outer peripheral surface of first carbocycle seal seat all are equipped with first O type circle.
Furthermore, the first sealing seat is an elongated carbon ring seat, and the second sealing units are all accommodated at the inner side of the first sealing seat; and a second O-shaped ring is arranged between the outer peripheral surface of the second carbon ring seat and the inner peripheral surface of the first sealing seat.
Furthermore, the first carbon ring is formed by three arc-shaped carbon ring assemblies with the same structure, and a first mounting hole for mounting the mounting pin is formed in one arc-shaped carbon ring assembly.
Furthermore, the second carbon rings are all composed of three arc-shaped carbon ring assemblies with the same structure, and a second mounting hole for mounting the mounting pin is formed in one of the arc-shaped carbon ring assemblies of each second carbon ring.
Furthermore, an intermediate ring is also arranged in the first sealing seat, and a channel is arranged on the intermediate ring; and the first sealing seat is provided with an air inlet hole for connecting and isolating gas and an atmosphere through hole communicated with the channel.
Further, a gland is arranged on the side, close to the oil tank, of the first sealing seat, and the gland is connected with the first sealing seat through bolts.
The utility model has the advantages that: the utility model discloses an keep apart airtight structure for process gas compressor is gradient reducing pressure in proper order after through multichannel carbocycle, prevents that process gas from spilling over through connecting the isolation gas that atmospheric pressure is greater than process gas simultaneously to discharge unnecessary isolation gas through the atmospheric through-hole, further prevent that process gas from leaking, play sealed process gas's mesh.
Drawings
Fig. 1 is a schematic structural view of an isolation and air-tight sealing structure for a process gas compressor according to a preferred embodiment of the present invention.
Detailed Description
The present invention will be more clearly and completely described with reference to the following preferred embodiments and the accompanying drawings.
As shown in fig. 1, the isolation and gas sealing structure for the process gas compressor of the present embodiment includes a labyrinth seal 1 sleeved on the high pressure side of the rotating shaft of the compressor, and one end of the labyrinth seal 1 near the atmosphere side is connected to a carbon ring sealing structure. The carbon ring sealing structure comprises a first sealing unit and three groups of second sealing units. Wherein, the first sealing unit comprises a first sealing seat 2 and a first carbon ring 21 corresponding to the first sealing seat. Each set of the second sealing units includes a second carbon ring seat 3 and a second carbon ring 31 corresponding thereto. First carbocycle 21 with all be equipped with the installation round pin on the second carbocycle 31, first carbocycle 21 with the second carbocycle 31 is kept away from compressor shaft side and is equipped with extension spring 23 and extension spring 33 respectively. And the outer peripheral surface of the labyrinth seal ring 1 and the outer peripheral surface of the first seal seat 2 are both provided with a first O-shaped ring 4.
The first sealing seat 2 is an elongated carbon ring seat, and all the second sealing units are accommodated in the inner side of the first sealing seat 2, namely, between the first sealing seat 2 and the rotating shaft of the compressor; and a second O-shaped ring 5 is arranged between the outer peripheral surface of the second carbon ring seat 3 and the inner peripheral surface of the first sealing seat 2.
The first carbon ring 21 is formed by three arc-shaped carbon ring assemblies with the same structure, wherein a first mounting hole 24 for mounting the mounting pin 22 is formed in one of the arc-shaped carbon ring assemblies. Similarly, the second carbon ring 31 is also formed by three arc-shaped carbon ring assemblies with the same structure, and one of the arc-shaped carbon ring assemblies of each second carbon ring 31 is provided with a second mounting hole 34 for mounting the mounting pin 32. The purpose of preventing the first carbon ring and the second carbon ring from rotating is achieved through the mounting pin.
A first spring 13 is provided on the other arc-shaped carbon ring assembly in the first carbon ring 21, and a second spring 14 is provided on the other arc-shaped carbon ring assembly in each second carbon ring 31, so as to axially fix the carbon ring sealing structure. Wherein, first carbocycle and second carbocycle all can float along the radial of compressor shaft, reach the effect of automatic aligning.
Further, an intermediate ring 6 is further arranged in the first sealing seat 2, and a channel 61 is arranged on the intermediate ring 6; the first sealing seat 2 is provided with an air inlet 202 for connecting an isolating body and an atmosphere through hole 201 communicated with the channel.
The first sealing seat 2 is provided with a gland 7 near the oil tank side, and the gland 7 is connected with the first sealing seat 2 through a bolt 8.
The left side of the labyrinth seal ring 1 is provided with high-pressure process gas, a non-contact floating seal is arranged between the labyrinth seal ring 1 and a compressor rotating shaft, a high-pressure side Pn is a process gas medium, the pressure is preliminarily reduced to Pn-1 after passing through the labyrinth seal ring 1, and then is reduced to Pn-1, Pn-2 …, P2 and P1 in sequence in a gradient manner after passing through a plurality of carbon rings (a first carbon ring and a plurality of second carbon rings), wherein Pn is more than Pn-1 and more than … and more than P2 and more than P1. The isolation gas with pressure of Pt is introduced into the air inlet hole 202, and P2 is more than Pt and more than P1, so that the process gas with pressure of P1 is prevented from leaking, the atmosphere through hole 201 is communicated with the atmosphere side, and the redundant isolation gas is discharged, thereby playing the role of sealing the process gas.
The structure gradually reduces the pressure of the high-pressure process gas from the high-pressure side Pn to P1 through a multi-stage floating carbon ring structure, and prevents the process gas from leaking by using the pressure isolation gas higher than P1, thereby playing a role in sealing.
Although particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are examples only and that the scope of the present invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (7)
1. An isolation gas sealing structure for a process gas compressor is characterized by comprising a labyrinth seal ring sleeved on a rotating shaft of the compressor, wherein one end, close to the atmosphere side, of the labyrinth seal ring is connected with a carbon ring sealing structure, and the carbon ring sealing structure comprises a first sealing unit and at least three groups of second sealing units; the first sealing unit comprises a first sealing seat and a first carbon ring corresponding to the first sealing seat; every group the second seal unit all includes second carbon ring seat and the second carbocycle that corresponds with it, first carbocycle with all be equipped with installation round pin and spring on the second carbocycle, the flexible direction of spring with the compressor pivot is parallel.
2. The isolating and gas-sealing structure for the process gas compressor as claimed in claim 1, wherein the outer circumferential surface of the labyrinth seal and the outer circumferential surface of the first carbon ring seal holder are each provided with a first O-ring.
3. The isolating and gas-sealing structure for the process gas compressor as claimed in claim 1, wherein the first sealing seat is an elongated sealing seat, and the second sealing units are all accommodated inside the first sealing seat; and a second O-shaped ring is arranged between the outer peripheral surface of the second carbon ring seat and the inner peripheral surface of the first sealing seat.
4. The isolating and gas sealing structure for a process gas compressor as claimed in claim 3, wherein the first carbon ring is formed of three arc-shaped carbon ring assemblies having the same structure, wherein one of the arc-shaped carbon ring assemblies is provided with a first mounting hole for mounting the mounting pin.
5. The isolating gas seal structure for the process gas compressor as claimed in claim 4, wherein said second carbon rings are each formed of three arcuate carbon ring assemblies having the same structure, and one of said arcuate carbon ring assemblies of each of said second carbon rings is provided with a second mounting hole for mounting said mounting pin.
6. The isolating and gas-sealing structure for the process gas compressor as claimed in claim 5, wherein an intermediate ring is further provided in the first sealing seat, and the intermediate ring is located at the same side of the three sets of the second sealing units, and a passage is provided on the intermediate ring; and the first sealing seat is provided with an air inlet hole for connecting and isolating gas and an atmosphere through hole communicated with the channel.
7. The isolating and gas-sealing structure for the process gas compressor as claimed in claim 5, wherein a gland is provided at a side of the first sealing seat adjacent to the oil tank, and the gland is coupled to the first sealing seat by bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120530124.6U CN214617029U (en) | 2021-03-15 | 2021-03-15 | Isolation gas sealing structure for process gas compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120530124.6U CN214617029U (en) | 2021-03-15 | 2021-03-15 | Isolation gas sealing structure for process gas compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214617029U true CN214617029U (en) | 2021-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120530124.6U Active CN214617029U (en) | 2021-03-15 | 2021-03-15 | Isolation gas sealing structure for process gas compressor |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118482029A (en) * | 2024-07-16 | 2024-08-13 | 浙江镕达永能压缩机有限公司 | Dynamic pressure spiral composite sealing structure of vapor compression machine |
-
2021
- 2021-03-15 CN CN202120530124.6U patent/CN214617029U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118482029A (en) * | 2024-07-16 | 2024-08-13 | 浙江镕达永能压缩机有限公司 | Dynamic pressure spiral composite sealing structure of vapor compression machine |
| CN118482029B (en) * | 2024-07-16 | 2024-09-17 | 浙江镕达永能压缩机有限公司 | Dynamic pressure spiral composite sealing structure of vapor compression machine |
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