CN107701728A - Pressure balance type packing ring - Google Patents
Pressure balance type packing ring Download PDFInfo
- Publication number
- CN107701728A CN107701728A CN201711084881.XA CN201711084881A CN107701728A CN 107701728 A CN107701728 A CN 107701728A CN 201711084881 A CN201711084881 A CN 201711084881A CN 107701728 A CN107701728 A CN 107701728A
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- Prior art keywords
- ring
- pressure balance
- balance type
- type packing
- packing ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000012856 packing Methods 0.000 title claims abstract description 75
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 abstract description 31
- 239000007789 gas Substances 0.000 abstract description 19
- 239000000945 filler Substances 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 8
- 238000007906 compression Methods 0.000 abstract description 5
- 230000006835 compression Effects 0.000 abstract description 3
- 230000003405 preventing effect Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 9
- 238000005299 abrasion Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000541 pulsatile effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/002—Sealings comprising at least two sealings in succession
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compressor (AREA)
Abstract
The present invention relates to a kind of pressure balance type packing ring, belongs to the sealing device of reciprocating compressor, is assemblied between the stuffing-boxes and piston rod at different levels of reciprocating compressor, prevents the gases at high pressure in reciprocating compressor cylinder from being leaked along piston rod direction.The pressure balance type packing ring is integrated with tangential ring and radial direction ring on a ring bodies, it is a ring sealing structure, the existing sealing function that tangential ring is possessed in compression, possess the backflow effect of the radial direction ring in air-breathing again, it is made up of four Split assembleds, by the spring linking of outmost turns into an entirety, structure is in sealing surface, prevents gas from leaking outside.Using the pressure balance type packing ring, many spaces are reduced on width, shorten the installation length of whole filler assembly, it is cost-effective, and there is more preferable leak preventing effect.
Description
Technical field
The present invention relates to the sealing device field of reciprocating compressor, more particularly to packing ring field, in particular to one kind
Pressure balance type packing ring.
Background technology
The maximum tolerance typically according to needed for device of the tolerance of piston compressor needed for chemical plant installations processing technology selects
Compressor, at the same according to API618 require piston compressor design when tolerance will also by overgauge (within 3%~5%, molecular weight
Small choosing is worth greatly) determine, along with device load variations, entry condition change, the factor such as unit leakage, piston compressor
Tolerance can all have larger surplus capacity.In order to meet that production needs meet tolerance requirement, we can device in each leakage point
Seal, including packing seal.
The effect of reciprocating compressor packing sealing ring is to prevent the gases at high pressure in cylinder from being leaked along piston rod direction,
It is one of most important parts in compressor, and one of most important external leakage approach of compressor.Under normal circumstances, I
The packing sealing ring often said be a kind of rotary packing ring, i.e., only just sealed in compressor operating, and compressor stops
During machine or other in particular cases, it can not seal.Dynamic sealing refers to be applied to the pressure on packing sealing ring
Obvious mechanical periodicity is formed with the reciprocating motion of piston, so pressure is also fluctuation pressure, such as common double-acting cylinder,
Necessary to the pressure of this pulsatile change is packing sealing ring sealing gas.Packing sealing ring generally use has certain from profit
The materials such as the filled polytetrafluoroethylene of slip, monomer cast nylon, metallo-plastic, gas is in compressor through overcompression, its temperature liter
Height, seal expansion, by prolonged operation, seal is rubbed repeatedly, and sealing effectiveness gradually weakens, and need to often change,
Belong to consumable accessory.
The content of the invention
Its purpose of the invention, which is that, provides a kind of pressure for ensureing reciprocating compressor tolerance, preventing process gas from revealing
Balanced type packing ring.
To achieve these goals, pressure balance type packing ring of the invention has following form：
The pressure balance type packing ring, it is mainly characterized by, and radial direction ring and tangential ring are integrated with a ring bodies.
It is preferred that the integrated of radial direction ring and tangential ring is realized by the difference of the shape and structure of the positive and negative of ring bodies.
More preferably, described ring bodies includes four components, respectively upper component, left set part, lower component and right component, according to
Secondary connection, form the pressure balance type packing ring.
More preferably, four described components are realized by fixed mechanism and connected.
More preferably, the lateral surface of four components is provided with groove, and described fixed mechanism includes fixing spring, described
Fixing spring be positioned in groove, by four component hoops circlewise.
More preferably, described upper component is identical with the shape and structure of lower component, the shape and structure phase of left set part and right component
Together, the positive and negative of each group part is distinguished when and four components are attached, the pressure balance type filler is formed by the front of four components
The front of ring, the reverse side of the pressure balance type packing ring is made up of the reverse side of four components.
More preferably, described upper component and the reverse side of lower component are in fan ring-type, and the circle of the central angle of its inner ring and outer shroud
Heart angle is equal, described upper component and lower component it is positive arched.
More preferably, the front of described left set part and right component is in fan ring-type, and the center of circle of the central angle of inner ring and outer shroud
Angle is equal, and the reverse side of described left set part and right component is also in fan ring-type, and the central angle of its inner ring is less than the central angle of outer shroud.
More preferably, the front of described pressure balance type packing ring has in insertion in complete annular shape, reverse side in one
The annular shape of the breach of outer shroud.
Using the pressure balance type packing ring in the invention, while there is radial direction ring and tangential ring, leakage-preventing effect is good, and
Due to only having a ring, its caused frictional heat is less than the packing ring of conventional version, moreover it is possible to reduces piston rod surface temperature, extends
The service life of piston rod, and the pressure balance suffered by the pressure balance type packing ring, reduce its abrasion, it is close also to extend this
The service life of seal apparatus, energy consumption is reduced, improve compressor efficiency, be a kind of extra small new design of amount of leakage.
Brief description of the drawings
Fig. 1 is the installation diagram of packing ring in the prior art；
Fig. 2 is the installation diagram of the pressure balance type packing ring of the present invention；
Fig. 3 is the compressible filler leakage process for the cylinder for being equipped with the pressure balance type packing ring of the present invention；
Fig. 4 is the suction gas reflux course for the cylinder for being equipped with the pressure balance type packing ring of the present invention；
Fig. 5 is the filler side view of the pressure balance type packing ring of the assembling present invention；
Fig. 6 is the filler main sectional view of the pressure balance type packing ring of the assembling present invention；
Fig. 7,8 are pressure balance type packing ring explosive view of the invention；
Fig. 9,10 be the present invention pressure balance type packing ring assembling after structural representation；
Reference
Component on 1
2 lower components
3 left set parts
4 right components
Embodiment
In order to more clearly describe the technology contents of the present invention, carried out with reference to specific embodiment further
Description.
Fig. 7 to Figure 10 is referred to, pressure balance type packing ring of the invention has following form：
The pressure balance type packing ring, it is mainly characterized by, and radial direction ring and tangential ring are integrated with a ring bodies.
In a kind of preferably embodiment, radial direction ring is realized by the difference of the shape and structure of the positive and negative of ring bodies and is cut
To the integrated of ring.
In a kind of more preferably embodiment, described ring bodies includes four components, respectively upper component 1, left set part
3rd, lower component 4 and right component 2, are sequentially connected, and form the pressure balance type packing ring.
In a kind of more preferably embodiment, described four components are realized by fixed mechanism and connected.
In a kind of more preferably embodiment, the lateral surface of four components is provided with groove, described fixed mechanism bag
Fixing spring is included, described fixing spring is positioned in groove, by four component hoops circlewise.
In a kind of more preferably embodiment, described upper component 1 is identical with the shape and structure of lower component 4, the He of left set part 3
The shape and structure of right component 2 is identical, and the positive and negative of each group part is distinguished when four components are attached, by positive group of four components
Into the front of the pressure balance type packing ring, the reverse side of the pressure balance type packing ring is made up of the reverse side of four components.
In a kind of more preferably embodiment, the reverse side of described upper component 1 and lower component 4 is in fan ring-type, and its inner ring
Central angle it is equal with the central angle of outer shroud, described upper component 1 and lower component 4 it is positive arched.
In a kind of more preferably embodiment, the front of described left set part 3 and right component 2 is in fan ring-type, and inner ring
Central angle is equal with the central angle of outer shroud, and the reverse side of described left set part 3 and right component 2 is also in fan ring-type, and the circle of its inner ring
Heart angle is less than the central angle of outer shroud.
In a kind of more preferably embodiment, the front of described pressure balance type packing ring is in complete annular shape, instead
Face is in the annular shape of a breach with inside and outside ring.In specific implementation process, front maximum outside diameter is maximum outer with reverse side
Footpath is equal.
Within the reciprocal cycle of operation of compressor, compression stage is as shown in figure 3, the gases at high pressure in cylinder act on filler
On sealing ring, pressure difference is formed before and after packing sealing ring, each sealing surface can be good at work, gas in the presence of gas differential pressure
Body progressively leaks into subsequent filler cup groove and forms similar seal form, finally ensures the sealing effect of whole stuffing box
Fruit；In expiratory phase as shown in fig. 6, gas is back to gas by the otch of pressure balance type packing ring in packing seal ring group
Cylinder, the gas pressure in filler cup groove is gradually reduced, therefore is so ensured that in next compression process, packing seal
The front and rear and can of ring sets up new pressure difference, packing sealing ring is formed three sealing surfaces, plays sealing function.
Fig. 1 and Fig. 2 are referred to, pressure balance type packing ring is the combination of tangential ring and radial direction ring, by the prior art
The sealing of two rings become present ring sealing, it is the advantages of containing two kinds of rings of tangential ring and radial direction ring, existing in compression
The sealing function (front) that tangential ring is possessed, there is the backflow effect (reverse side) of the radial direction ring in air-breathing again.
The maximum feature of pressure balance type packing ring is that have very big change in structure, the pressure balance type packing ring
Assembly, formed by four Split assembleds, the spring linking by outmost turns is an entirety；In compression process, formed altogether
Three sealing surfaces：First, upper component 1, left set part 3, right component 2 and lower component 4 in the presence of spring force and gas force tightly
Ground is fit together, and a sealing surface is just constructed between such four, it is prevented that the leakage of gas, this is also this sealing surface
The design and effect of former tangential ring；Second, it is also to be close to be combined under active force to balance the inner ring of filler and piston rod, is prevented
Only gases at high pressure from piston rod with being leaked in filler czermak space；3rd, front and the stuffing box cup groove of pressure balance type packing ring
Side forms sealing surface, prevents gas leak again.
When cylinder air-breathing (see Fig. 4), cylinder-side pressure reduces, and gas is from the axial direction of block ring Yu stuffing box cup groove side
Compressed gap in gap into pressure balance type packing ring reverse side is back to cylinder, and the reverse side of pressure balance type packing ring has
Four radial slots, compared with three otch of traditional design radial direction ring, it smoothly can more return the gas in stuffing box for this
Stream, and this otch can compensate in unit running process after filler abrasion, continue to ensure good sealing effect
Fruit.Pressure balance type packing ring becomes a ring by two traditional rings, and many spaces are reduced on width, can thus subtract
The installation length of short whole filler assembly, particularly under high-pressure situations, this innovation is especially pronounced, no longer in order to meet
High pressure filling is installed and deliberately increases cylinder, the length of cylinder had so both been shortened, and had shortened the length of piston rod again, in cost
On saved it is many；The reduction of filler ring width, the advantages of directly bringing many aspects, specific visible latter technique effect
Content.
Pressure balance type packing ring can reach following effect：
(1) frictional heat is reduced.The tangential ring of traditional design and the ring of radial direction ring two are combined into one, reduce CONTACT WITH FRICTION
Face, so as to reduce frictional heat.
(2) reduce ring abrasion, extend its service life.The tangential ring and radial direction ring of traditional design are due to the pass of front and rear pressure difference
System, stress is variant, and abrasion is also variant；And pressure balance type packing ring is an overall ring, uniform force, therefore wearing reduces,
Extend the service life of ring.
(3) piston rod surface temperature is reduced, extends its service life.Due to two-in-one innovative design, friction is reduced
Contact surface, frictional heat is reduced, similarly reduce the surface temperature of piston rod, extend the service life of piston rod.
(4) leakage rate is reduced.Pressure balance type packing ring is a ring, and axial distance greatly reduces relative to traditional design
, so as in limited axial seal length, several rings be installed more, increase effective seal length, reduce leakage rate.
(5) energy consumption is reduced, improves compressor efficiency.The reduction of rubbing surface, so as to allow energy consumption also accordingly to reduce, reach and carried
High compressor efficiency.
During specific experiment, be equipped with the filler of pressure balance type packing ring as shown in figure 5, and operation two
55T piston force Lubricant hydrogenation plant units, three-level pressure at expulsion are 22MPa, and unit is after start runs a period of time, three-level
Start leakage phenomenon occur, find that packing ring has abrasion after tearing machine check open, should be that pressure at expulsion is too high through analysis, and compress and be situated between
Matter is easy leaking medium hydrogen, and packing sealing ring is not caused enough；Reality is that unit is molded, cylinder assembly, piston component
Also it is molded, cylinder length is further added by meet that several groups of airtight and watertight padding cost loss of more installations are larger, and the cycle is also longer, and connect cylinder
Space is also limited, can not meet the long dismounting of filler assembly；Constraint and cost-effective theory between reality, go to solve
Certainly the problem of physical presence, using pressure balance type packing ring after a kind of this new seal form, as shown in fig. 6, installation pressure
Space needed for force balance type packing ring is smaller by 1/3 than the space needed for installation conventional filler ring, so Primordial Qi cylinder installs stuffing box
The confined space be conserved, unnecessary space can be further added by two groups of pressure balance type packing rings, reached do not change it is former big
Type component and the purpose for increasing sealing ring；By real running results show, the sealing ring significant effect after replacing, leakage problem
It is resolved, filler internal temperature also reduces, and the life-span of packing ring also extends.
Using the pressure balance type packing ring in the invention, while there is radial direction ring and tangential ring, leakage-preventing effect is good, and
Due to only having a ring, its caused frictional heat is less than the packing ring of conventional version, moreover it is possible to reduces piston rod surface temperature, extends
The service life of piston rod, and the pressure balance suffered by the pressure balance type packing ring, reduce its abrasion, it is close also to extend this
The service life of seal apparatus, energy consumption is reduced, improve compressor efficiency, be a kind of extra small new design of amount of leakage.
In this description, the present invention is described with reference to its specific embodiment.But it is clear that it can still make
Various modifications and alterations are without departing from the spirit and scope of the present invention.Therefore, specification and drawings are considered as illustrative
It is and nonrestrictive.
Claims (9)
1. a kind of pressure balance type packing ring, it is characterised in that be integrated with radial direction ring and tangential ring on a ring bodies.
2. pressure balance type packing ring according to claim 1, it is characterised in that by the shape knot of the positive and negative of ring bodies
The difference of structure realizes the integrated of radial direction ring and tangential ring.
3. pressure balance type packing ring according to claim 2, it is characterised in that described ring bodies includes four groups
Part, respectively upper component, left set part, lower component and right component, is sequentially connected, forms the pressure balance type packing ring.
4. pressure balance type packing ring according to claim 3, it is characterised in that four described components are by fixed mechanism
Realize connection.
5. pressure balance type packing ring according to claim 4, it is characterised in that the lateral surface of four components is provided with
Groove, described fixed mechanism include fixing spring, and described fixing spring is positioned in groove, by four component hoops into
Ring-type.
6. pressure balance type packing ring according to claim 3, it is characterised in that described upper component and the shape of lower component
Shape structure is identical, and left set part is identical with the shape and structure of right component, and the positive and negative of each group part is distinguished when four components are attached
Face, the front of the pressure balance type packing ring is made up of the front of four components, the pressure balance is formed by the reverse side of four components
The reverse side of formula packing ring.
7. pressure balance type packing ring according to claim 6, it is characterised in that described upper component and lower component it is anti-
Face is in fan ring-type, and the central angle of its inner ring is equal with the central angle of outer shroud, and the front of described upper component and lower component is in bow
Shape.
8. pressure balance type packing ring according to claim 7, it is characterised in that described left set part and right component are just
Face is in fan ring-type, and the central angle of inner ring is equal with the central angle of outer shroud, and the reverse side of described left set part and right component is also in fan
Ring-type, and the central angle of its inner ring is less than the central angle of outer shroud.
9. pressure balance type packing ring according to claim 8, it is characterised in that described pressure balance type packing ring
In complete annular shape, reverse side is in the annular shape of a breach with inside and outside ring in front.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711084881.XA CN107701728A (en) | 2017-11-07 | 2017-11-07 | Pressure balance type packing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711084881.XA CN107701728A (en) | 2017-11-07 | 2017-11-07 | Pressure balance type packing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107701728A true CN107701728A (en) | 2018-02-16 |
Family
ID=61178373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711084881.XA Withdrawn CN107701728A (en) | 2017-11-07 | 2017-11-07 | Pressure balance type packing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107701728A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611055A (en) * | 2018-12-07 | 2019-04-12 | 柳江 | A kind of passive solvable bridge plug of disintegration formula |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1071612A (en) * | 1964-06-18 | 1967-06-07 | Linde Ag | Improvements in or relating to stuffing box packings |
| US20090108535A1 (en) * | 2007-10-31 | 2009-04-30 | Hoerbiger Kompressortechnik Holding Gmbh | Multipart packing ring |
| US20090289422A1 (en) * | 2007-11-15 | 2009-11-26 | Hoerbiger Kompressortechnik Holding Gmbh | Packing ring combination |
| CN101985922A (en) * | 2010-11-02 | 2011-03-16 | 卢艳 | Oil-free lubrication reciprocating compressor packing box |
| CN206571643U (en) * | 2017-03-20 | 2017-10-20 | 温州东一机械制造有限公司 | A kind of novel reciprocating type technique compressor seal ring |
-
2017
- 2017-11-07 CN CN201711084881.XA patent/CN107701728A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1071612A (en) * | 1964-06-18 | 1967-06-07 | Linde Ag | Improvements in or relating to stuffing box packings |
| US20090108535A1 (en) * | 2007-10-31 | 2009-04-30 | Hoerbiger Kompressortechnik Holding Gmbh | Multipart packing ring |
| US20090289422A1 (en) * | 2007-11-15 | 2009-11-26 | Hoerbiger Kompressortechnik Holding Gmbh | Packing ring combination |
| CN101985922A (en) * | 2010-11-02 | 2011-03-16 | 卢艳 | Oil-free lubrication reciprocating compressor packing box |
| CN206571643U (en) * | 2017-03-20 | 2017-10-20 | 温州东一机械制造有限公司 | A kind of novel reciprocating type technique compressor seal ring |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611055A (en) * | 2018-12-07 | 2019-04-12 | 柳江 | A kind of passive solvable bridge plug of disintegration formula |
| CN109611055B (en) * | 2018-12-07 | 2021-05-18 | 山东兆鑫石油工具有限公司 | Passive disintegration type soluble bridge plug |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180216 |
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| WW01 | Invention patent application withdrawn after publication |