CN205715676U - Long distance pipeline gas compressor set dry gas seals - Google Patents
Long distance pipeline gas compressor set dry gas seals Download PDFInfo
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- CN205715676U CN205715676U CN201620354881.1U CN201620354881U CN205715676U CN 205715676 U CN205715676 U CN 205715676U CN 201620354881 U CN201620354881 U CN 201620354881U CN 205715676 U CN205715676 U CN 205715676U
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Abstract
This utility model relates to a kind of long distance pipeline gas compressor set dry gas seals, secondary including the primary seal being arranged in compressor chamber body, secondary seal is secondary, one-level spring base and two-level spring seat, primary seal pair includes one-level rotating ring and one-level stationary ring, secondary seal pair includes two grades of rotating rings and two grades of stationary rings, one-level spring base and two-level spring seat are fixedly installed on compressor cavity, one-level rotating ring and two grades of rotating rings are fixedly installed on the axle sleeve of compressor main shaft, one-level stationary ring is fixedly installed on one-level spring base, two grades of stationary rings are fixedly installed on two-level spring seat, between one-level stationary ring and one-level spring base, throw-out collar and spring all it is disposed with between two grades of stationary rings and two-level spring seat, one-level spring base connects two-level spring seat, primary seal pair is provided with, with between secondary seal pair, the interface channel connected.This dry gas seals has stable and reliable operation, length in service life, capacity of resisting disturbance by force, use, the feature that maintenance cost is low.
Description
Technical field
This utility model relates to technical field of mechanical, particularly to a kind of long distance pipeline natural gas compressor
Group dry gas seals.
Background technology
Certain type long distance pipeline gas compressor set is the core drive equipment of China's West-East National Gas Transmission Project, to guarantor
The long period safe and stable operation of barrier gas pipeline is significant, and long distance pipeline sky under normal circumstances
So the gland seal device of air compressor group is to determine that can long distance pipeline gas compressor set safe and stable operation
The first element.
At present, this type long distance pipeline gas compressor set all use dry gas seals as gland seal device, because of should
Type long distance pipeline gas compressor set design pressure reaches 15MPa, and the diameter of axle is big, and start and stop is frequent, runs pressure
Power is high, and working condition is complicated, uses environmental condition various, thus to the performance of dry gas seals, reliability,
Proposing the highest requirement service life, the gland seal device of this type long distance gas transmission pipeline compressor bank is complete at present
The dry gas seals of portion's dependence on import.Owing to import dry gas seals is the most expensive, the delivery cycle is long, and
Maintenance, service not in time, directly influence the long period safe and stable operation of long distance gas pipeline.
Utility model content
The purpose of this utility model is to provide a kind of stable and reliable operation, length in service life, capacity of resisting disturbance
By force, use, maintenance cost low, meet long conveyance conduit gas compressor set use require dry gas seals.
For solving above-mentioned technical problem, it is close that this utility model have employed long distance pipeline gas compressor set dry gas
Envelope, secondary seal pair, one-level spring base secondary including the primary seal being arranged in compressor chamber body and two grades
Spring base, described primary seal pair includes one-level rotating ring and one-level stationary ring, and secondary seal pair includes two grades of rotating rings
With two grades of stationary rings, described one-level spring base and two-level spring seat be fixedly installed on compressor cavity, and described one
Level rotating ring and two grades of rotating rings are fixedly installed on the axle sleeve of compressor main shaft, and one-level stationary ring is fixedly installed on one-level
On spring base, two grades of stationary rings are fixedly installed on two-level spring seat, described one-level stationary ring and one-level spring base it
Between, be all disposed with throw-out collar and spring between two grades of stationary rings and two-level spring seat, described one-level spring base is even
Connecing two-level spring seat, described primary seal pair is provided with, with between secondary seal pair, the interface channel connected.
In technique scheme, further, described axle sleeve is fixedly installed rotating seat, described rotating seat
Being arranged between one-level rotating ring and two grades of rotating rings, one-level rotating ring is held out against at end face of shaft bush by rotating seat left end, and two
Level rotating ring one end leans against on rotating seat right side, and the other end is provided with clamping sleeve, and two grades are moved by described clamping sleeve
Ring holds out against in rotating seat right side, formed between described one-level spring base and rotating seat connection primary seal secondary and
The interface channel that secondary seal is secondary, described one-level spring base is provided with the gas outlet of connection interface channel.
In technique scheme, further, it is connected by driving key between described rotating seat and axle sleeve.
In technique scheme, further, by connecting between described one-level spring base and two-level spring seat
Screw is fixing to be connected.
In technique scheme, further, described compressor cavity is provided with primary seal gas entrance,
The outlet of primary seal gas and secondary seal gas export, and described primary seal gas entrance connection primary seal is secondary, and one
Level blanket gas outlet interface channel, secondary seal gas outlet secondary seal is secondary.
In technique scheme, further, the outlet of described primary seal gas connects current limiting valve.
In technique scheme, further, the seal face of described one-level rotating ring and two grades of rotating rings is arranged
There is spiral line type dynamic pressure groove.
In technique scheme, further, described one-level stationary ring and two grades of stationary rings all use graphite annulus, and one
Level rotating ring and two grades of rotating rings all use tungsten carbide ring.
This utility model is had the advantages that
1) this dry gas seals uses tandem type two-stage to seal structure, and primary seal pair is primary seal, secondary seal
Secondary as auxiliary seal, good sealing effect；By interface channel connection primary seal is secondary and secondary seal is secondary,
Dry gas seals operationally has only to introduce sealing medium, without additionally introducing it in primary seal vice division chief
Its sealing medium, seals structure simpler, decreases the demand to dry gas seals auxiliary device simultaneously, improve
The suitability of dry gas seals, reduces use cost；
2) according to the work characteristics of long distance pipeline gas compressor set, on the rotating ring that dry gas seals is used
Spiral line type dynamic pressure groove is set, the work characteristics of compressor bank frequent start-stop can be perfectly suitable for, effectively prolong
Grow the service life of dry gas seals；
3) this utility model uses tungsten carbide-graphite dry gas seals secondary, and wherein rotating ring uses intensity, hardness high,
The tungsten carbide ring that resistance to chemical corrosion is good so that it is can well be applicable to high speed and high pressure working environment, improves
The job stability of dry gas seals and service life.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
Fig. 2 is dynamic pressure groove structural representation on the seal face of one-level rotating ring and two grades of rotating rings in this utility model.
In figure: 1, compressor main shaft, 2, axle sleeve, 3, one-level rotating ring, 4, one-level stationary ring, 5, two grades are moved
Ring, 6, two grades of stationary rings, 7, rotating seat, 8, one-level spring base, 9, two-level spring seat, 10, clamping sleeve,
11, throw-out collar, 12, spring, 13, compressor cavity, 14, interface channel, 15, driving key, 16, even
Connect screw, 17, gas outlet, 18, dynamic pressure groove；
A, primary seal gas entrance, the outlet of B, primary seal gas, C, secondary seal gas export.
Detailed description of the invention
With specific embodiment, this utility model is further described below in conjunction with the accompanying drawings.
As it is shown in figure 1, be dry gas seals mounting structure figure on gas compressor set, described dry gas is close
Package includes and is sequentially connected in series that the primary seal that is arranged in compressor cavity 13 is secondary, one-level spring base 8, two grades is close
Envelope pair and two-level spring seat 9, wherein primary seal pair includes one-level rotating ring 3 and one-level stationary ring 4, secondary seal
Pair includes that two grades of rotating rings 5 and two grades of stationary rings 6, one-level spring base 8 and two-level spring seat 9 are fixedly installed on compression
On machine cavity body 13, described one-level rotating ring 3 and two grades of rotating rings 5 are fixedly installed on the axle sleeve 2 of compressor main shaft 1
On, one-level stationary ring 4 is fixedly installed on one-level spring base 8, and two grades of stationary rings 6 are fixedly installed on two-level spring
On seat 9, between described one-level stationary ring 4 and one-level spring base 8, two grades of stationary rings 6 and two-level spring seat 9 it
Between be all disposed with throw-out collar 11 and spring 12, described one-level spring base 8 connects two-level spring seat 9, described
Primary seal secondary be provided with the interface channel 14 connected between secondary seal pair.
It is connected for realizing fixing between rotating ring 5 with axle sleeve 2 of one-level rotating ring 3, two grades, the present embodiment uses
Axle sleeve 2 is fixedly installed rotating seat 7, described rotating seat 7 be arranged on one-level rotating ring 3 and two grades of rotating rings 5 it
Between, one-level rotating ring 3 is held out against at axle sleeve 2 end face by rotating seat 7 left end, and two grades of rotating ring 5 one end lean against rotating ring
On seat 7 right sides, the other end is provided with clamping sleeve 10, and two grades of rotating rings 5 are held out against dynamic by described clamping sleeve 10
Ring seat 7 right side；Between one-level spring base 8 and rotating seat 7, form connection primary seal secondary with two simultaneously
The interface channel 14 of level sealing pair, described one-level spring base 8 is provided with the gas outlet of connection interface channel 14
17。
In Fig. 1, one-level rotating ring 3,7, two grades of rotating rings 5 of rotating seat and the clamping sleeve 10 being arranged on axle sleeve
The rotating part of composition dry gas seals, is arranged on compressor main shaft 1, rotates with main shaft 1；One-level
Stationary ring 4,8, two grades of stationary rings 6 of one-level spring base, two-level spring seat 9 and the throw-out collar 11 of correspondence thereof and spring
The stationary part of 12 composition dry gas seals, is arranged on compressor by one-level spring base 8 and two-level spring seat 9
On cavity 13；Be provided with between one-level stationary ring 4 and one-level spring base 8, two grades of stationary rings 6 and two grades of bullets
Spring 12 between spring abutment 9 and throw-out collar 11 form the compensation mechanism of dry gas seals, and the spring force of spring 12 leads to
Crossing throw-out collar 11 to be respectively acting on one-level stationary ring 4 and two grades of stationary rings 6, effective compensation sealing pair is in work process
In axial float.
Preferably, it is connected by driving key 15 between described rotating seat 7 and axle sleeve 2.Described one-level spring base
Connect by attachment screw 16 is fixing between 8 and two-level spring seat 9.
Correspondingly, compressor cavity 13 is provided with primary seal gas entrance A, primary seal gas outlet B
Secondary with secondary seal gas outlet C, described primary seal gas entrance A connection primary seal, primary seal gas exports
B connects interface channel 14, and secondary seal gas outlet C connection secondary seal is secondary.By connecting in dry gas seals
Channel connection primary seal is secondary and secondary seal is secondary, operationally has only to introduce in primary seal vice division chief seal
Medium, without additionally introducing other sealing medium, seals structure simpler, decreases dry gas simultaneously
Seal the demand of auxiliary device；It addition, need not additional processing secondary seal gas entrance on compressor cavity,
Compressor cavity structure is simpler；Can also use the secondary seal gas entrance on original compressor cavity
Carrying out the mode closed, transformation is convenient.
During dry gas seals work, sealing medium enters in compressor chamber body by primary seal gas entrance, seals
Medium draws natural gas outside using, and forms air film between one-level rotating ring and one-level stationary ring, and sealing medium is through one-level
Sealing pair enters the interface channel between primary seal pair and secondary seal pair, and part sealing medium is close through one-level
Envelope gas outlet is flowed out, and it is secondary, at two grades of rotating rings and two that remaining sealing medium enters secondary seal by interface channel
Forming air film between level stationary ring, sealing medium is flowed out by gas outlet and the outlet of secondary seal gas；Close in one-level
Envelope gas outlet arranges flow-limiting valve, the flow of the sealing medium that scalable flows out through the outlet of primary seal gas.
For meeting the job requirement of long distance pipeline natural gas unit frequent start-stop, in the present embodiment, dry gas seals
Primary seal secondary and secondary seal pair all uses tungsten carbide-graphite dry gas seals secondary, wherein one-level rotating ring 3 He
Two grades of rotating rings 5 use tungsten carbide ring, one-level stationary ring 4 and two grades of stationary rings 6 to use high-quality heavy duty graphite annulus, work
When making, two groups of seal faces of dry gas seals do not contact, i.e. tungsten carbide-graphite grazing vice division chief runs shape in noncontact
State, running resistance is little, and dry gas seals is long for service life, low in energy consumption.It addition, such as Fig. 2, at one-level rotating ring 3
With spiral line type dynamic pressure groove 18 is set on the seal face of two grades of rotating rings 5, this spiral line type dynamic pressure groove 18 warp
Cross optimization design and there is low pressure low speed air floating properties, the service behaviour of sealing pair can be significantly improved, increase dry gas
The capacity of resisting disturbance sealed, adapts to frequent start-stop machine duty so that it is service behaviour is more stable, improves
Service life of dry gas seals.
Specification and drawings of the present utility model is considered as illustrative and not restrictive, new in this practicality
On the basis of type, those skilled in the art are according to disclosed technology contents, it is not necessary to performing creative labour just may be used
Some of them technical characteristic to be made some replacements and deformation, all in protection domain of the present utility model.
Claims (8)
1. long distance pipeline gas compressor set dry gas seals, close including the one-level being arranged in compressor chamber body
Envelope pair, secondary seal pair, one-level spring base and two-level spring seat, described primary seal pair includes one-level rotating ring
With one-level stationary ring, secondary seal pair includes two grades of rotating rings and two grades of stationary rings, described one-level spring base and two grades of bullets
Spring abutment is fixedly installed on compressor cavity, it is characterised in that: described one-level rotating ring and two grades of rotating rings are fixed and are set
Putting on the axle sleeve of compressor main shaft, one-level stationary ring is fixedly installed on one-level spring base, and two grades of stationary rings are fixed
It is arranged on two-level spring seat, between described one-level stationary ring and one-level spring base, two grades of stationary rings and two-level spring
All being disposed with throw-out collar and spring between Zuo, described one-level spring base connects two-level spring seat, described one-level
The interface channel connected it is provided with between sealing pair with secondary seal pair.
Long distance pipeline gas compressor set dry gas seals the most according to claim 1, it is characterised in that:
Being fixedly installed rotating seat on described axle sleeve, described rotating seat is arranged between one-level rotating ring and two grades of rotating rings,
One-level rotating ring is held out against at end face of shaft bush by rotating seat left end, and two grades of rotating ring one end lean against on rotating seat right side,
The other end is provided with clamping sleeve, and two grades of rotating rings are held out against in rotating seat right side by described clamping sleeve, described one-level bullet
The interface channel that connection primary seal is secondary and secondary seal is secondary, described one-level bullet is formed between spring abutment and rotating seat
The gas outlet of connection interface channel it is provided with on spring abutment.
Long distance pipeline gas compressor set dry gas seals the most according to claim 2, it is characterised in that:
It is connected by driving key between described rotating seat and axle sleeve.
Long distance pipeline gas compressor set dry gas seals the most according to claim 1, it is characterised in that:
Connect by attachment screw is fixing between described one-level spring base and two-level spring seat.
Long distance pipeline gas compressor set dry gas seals the most according to claim 1, it is characterised in that:
Primary seal gas entrance, the outlet of primary seal gas and the outlet of secondary seal gas it is provided with on described compressor cavity,
Described primary seal gas entrance connection primary seal is secondary, and primary seal gas outlet interface channel, two grades close
Envelope gas outlet secondary seal is secondary.
Long distance pipeline gas compressor set dry gas seals the most according to claim 5, it is characterised in that:
The outlet of described primary seal gas connects current limiting valve.
Long distance pipeline gas compressor set dry gas seals the most according to claim 1, it is characterised in that:
It is provided with spiral line type dynamic pressure groove on the seal face of described one-level rotating ring and two grades of rotating rings.
Long distance pipeline gas compressor set dry gas seals the most according to any one of claim 1 to 7,
It is characterized in that: described one-level stationary ring and two grades of stationary rings all use graphite annulus, one-level rotating ring and two grades of rotating rings equal
Use tungsten carbide ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620354881.1U CN205715676U (en) | 2016-04-26 | 2016-04-26 | Long distance pipeline gas compressor set dry gas seals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620354881.1U CN205715676U (en) | 2016-04-26 | 2016-04-26 | Long distance pipeline gas compressor set dry gas seals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205715676U true CN205715676U (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620354881.1U Active CN205715676U (en) | 2016-04-26 | 2016-04-26 | Long distance pipeline gas compressor set dry gas seals |
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| Country | Link |
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| CN (1) | CN205715676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757253A (en) * | 2016-04-26 | 2016-07-13 | 成都通密封股份有限公司 | Dry gas seal of long-distance pipeline natural gas compressor unit |
-
2016
- 2016-04-26 CN CN201620354881.1U patent/CN205715676U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757253A (en) * | 2016-04-26 | 2016-07-13 | 成都通密封股份有限公司 | Dry gas seal of long-distance pipeline natural gas compressor unit |
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| GR01 | Patent grant |