CN105604963B - A kind of gas compressor - Google Patents
A kind of gas compressor Download PDFInfo
- Publication number
- CN105604963B CN105604963B CN201510995381.6A CN201510995381A CN105604963B CN 105604963 B CN105604963 B CN 105604963B CN 201510995381 A CN201510995381 A CN 201510995381A CN 105604963 B CN105604963 B CN 105604963B
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- China
- Prior art keywords
- main shaft
- seal
- casing
- gas compressor
- carbocyclic ring
- Prior art date
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- 125000002837 carbocyclic group Chemical group 0.000 claims abstract description 53
- 238000007789 sealing Methods 0.000 claims abstract description 47
- 238000012856 packing Methods 0.000 claims abstract description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 50
- 239000007789 gas Substances 0.000 claims description 45
- 229910052757 nitrogen Inorganic materials 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 7
- 239000010425 asbestos Substances 0.000 claims description 5
- 229910052895 riebeckite Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000003034 coal gas Substances 0.000 abstract description 9
- 238000004880 explosion Methods 0.000 abstract description 5
- 239000002360 explosive Substances 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 15
- 239000010439 graphite Substances 0.000 description 14
- 229910002804 graphite Inorganic materials 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 235000014121 butter Nutrition 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009304 pastoral farming Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/102—Shaft sealings especially adapted for elastic fluid pumps
- F04D29/104—Shaft sealings especially adapted for elastic fluid pumps the sealing fluid being other than the working fluid or being the working fluid treated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/122—Shaft sealings using sealing-rings especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
- F04D29/162—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of a centrifugal flow wheel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/662—Balancing of rotors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a kind of gas compressor, including air inlet, casing, impeller, main shaft sealing device, main shaft and bearing housing；Connecting flange faces are provided with front side of casing, air inlet, which is bolted, is arranged on connecting flange faces, main shaft is penetrated on rear side of the casing, sealed between main shaft and casing using main shaft sealing device, the rear-end of spindle is fixed on the bearing housing by bearing, and main shaft sealing device includes seal, nitrogen-sealed chamber, several carbocyclic rings and packing；Each carbocyclic ring interval is uniformly sheathed on seal bottom side；Nitrogen-sealed chamber is closed cavity type, is arranged on seal middle part and between several carbocyclic rings, and packing is arranged on the outermost of main shaft sealing device, and is connected in seal.The present invention is rational in infrastructure, and complete machine sealing property is superior, while the flammable explosive gas of energy safe transport big flow, and coal gas is effectively ensured and does not leak, while prevents outside air from entering blower fan, is really achieved the purpose of gas defence anti-explosion safety operation.
Description
Technical field
The present invention relates to fluid machinery technical field, more particularly to a kind of gas compressor.
Background technology
Gas pressing process is the important step of production and processing, is largely using occasion of the coal gas as thermal source, coal gas adds
Press is the hinge that coal gas is mixed to, is pressed and delivered to user.Such as Chinese patent CN 103899577A disclose a kind of coal gas
Booster fan, including fan casing, air inlet, impeller, main shaft, casing axle envelope, bearing housing and base, it is characterised in that：It is described
Fan casing is made of steel plate welding, is provided with connecting flange faces on front side of the fan casing, the air inlet is set by bolt
In the connecting flange faces, the main shaft is penetrated on rear side of the fan casing, using described between the main shaft and fan casing
Casing axle envelope is sealed, and the rear-end of spindle is fixed on the bearing housing by bearing, and the bearing housing is secured by bolts in
On the base, the impeller is located in the fan casing and is installed on the front-end of spindle by wheel hub, the impeller with
Labyrinth seal is used between air inlet.The technical scheme points out, gas pressure blower, such as coke-stove gas, and its operating point is usually
Low discharge and high pressure, while require constant discharge pressure in running.This kind of blower fan is mainly characterized by rotating speed height, and blower fan is close
Envelope property requires high, there is requirement of explosion proof.Such blower fan uses D series of blowers substantially at present, configuration welding impeller, casts casing,
Casing outlet angle determines according to existing mold, is constant, and blower fan cost is higher.Therefore the technical scheme mainly overcomes
The defects of traditional D series of blowers, on the premise of the reliable and stable operation of blower fan is ensured, blower fan is improved in the suitable of production scene
Answering property and operating efficiency.The defects of housing outlets angulation change is inconvenient, and deformation design is difficult, and cost is high be present in D series of blowers
On the premise of, improve the adaptability of gas pressure blower variable working condition and site layout project, reduce cost.
In another example Chinese patent (Application No. 02110416.6) discloses a kind of hot coal gas pressurized fans gas flow sealing dress
Put, including receded disk impeller in casing, casing, the reel that is fixed on disk center after receded disk impeller and is engaged with main shaft with
And the sealing group on casing on the outside of spindle hole, it is characterised in that the hub disk of described receded disk impeller and the faying face position of reel
Open up through hole.The technical scheme discloses opens up through hole on receded disk impeller reel, make impeller hub disk and casing back side panel it
Between space near main shaft penetrated with the negative pressuren zone at air inlet, impeller hub disk and casing back side panel when rotating impeller
Between region near main shaft form negative pressuren zone, coordinate the seal assembly on casing on the outside of spindle hole again in addition, it is ensured that wind
Coal gas does not leak machine in the process of running, while prevents outside air from entering blower fan, reaches the purpose of gas defence anti-explosion safety operation.
Then the seal assembly mentioned in the technical scheme mainly includes tubular overcoat, airtight and watertight padding in overcoat and is engaged with overcoat
Inner sleeve airtight and watertight padding being compressed between outer casing inner wall and main shaft forms, and discloses airtight and watertight padding and mainly use soft graphite
Sealing ring, cause sealing effectiveness to be not reaching to improvement, influence the explosion-proof effect of blower fan gas defence.
The gas compressor of domestic production at present frequently encounters gas leakage in application process and influences the safety of blower fan
Operation, while the design of blower fan is relative with manufacturing technology level backward, the performance of blower fan is not reached the set goal, so as to drop
The low service life and security of equipment.
The content of the invention
Added to overcome gas compressor present in prior art to frequently encounter gas of high flow rate in application process
During pressure, gas is leaked the problem of influence the safe operation of blower fan, and the invention provides a kind of gas compressor.
The technical solution adopted by the present invention is：A kind of gas compressor, including air inlet, casing, impeller, main shaft seal dress
Put, main shaft and bearing housing；Connecting flange faces are provided with front side of the casing, the air inlet, which is bolted, is arranged on connection method
Blue face, the main shaft are penetrated on rear side of the casing, are sealed between the main shaft and casing using the main shaft sealing device, described
Rear-end of spindle is fixed on the bearing housing by bearing, and its innovative point is：The main shaft sealing device includes seal, nitrogen
Hermetic seal chamber, several carbocyclic rings and packing；Each carbocyclic ring interval is uniformly sheathed on seal bottom side；The nitrogen-sealed chamber
For closed cavity type, seal middle part is arranged on and between several carbocyclic rings, packing is arranged on main shaft sealing device
Outermost, and connected in seal.
On this basis, the packing is rubber asbestos packing.
On this basis, the number of the carbocyclic ring is even number；Each carbocyclic ring uses split type structure, the carbocyclic ring by
Some slice, thin piece carbocyclic ring compositions, some slice, thin piece carbocyclic rings are fixedly linked to form circular carbocyclic ring from beginning to end successively.
On this basis, the sub- carbocyclic ring piece number is 3, per the shape and structure all same of slice, thin piece carbocyclic ring.
On this basis, it is fixed by positioning device between some slice, thin piece carbocyclic rings connected；The positioner includes
Locating piece and retaining spring；The locating piece is arranged among per two neighboring sub- carbocyclic ring, and carries out the fixation in centre position；Institute
Retaining spring connection is stated per two neighboring sub- carbocyclic ring.
On this basis, the part that the locating piece exposes among two neighboring sub- carbocyclic ring is fixed in seal.
On this basis, the locating piece is strip locating piece.
On this basis, the nitrogen-sealed chamber includes annular seal space on nitrogen, sealed under nitrogen chamber and sealing air flue, described
Annular seal space is closed cavate on nitrogen, is arranged on the upside of seal, and annular seal space is by sealing under air flue and nitrogen on the nitrogen
Annular seal space through connection；The sealed under nitrogen chamber is closed cavate, is arranged on seal bottom side, and be arranged on arbitrary neighborhood
Two carbocyclic rings between and it is parallel with it.
On this basis, it is additionally provided with stainless steel sleeve between the main shaft sealing device and main shaft.
On this basis, back blades is provided between the impeller and casing, gear air ring is additionally provided between air inlet and impeller.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) gas compressor of the invention, sealed between main shaft and casing using main shaft sealing device, gas compressor work
It is good to make performance, efficiency high, air-tightness is high, service life of fan length.Specifically, main shaft sealing device is close including seal, nitrogen
Seal chamber, several carbocyclic rings and packing；Each carbocyclic ring interval is uniformly sheathed on seal bottom side；Nitrogen-sealed chamber is closed die cavity
Formula, it is arranged on seal middle part and between several carbocyclic rings, packing is arranged on the outermost of main shaft sealing device, and in
Seal connects, and whole device is rational in infrastructure, and complete machine sealing property is superior, while the inflammable and explosive gas of energy safe transport big flow
Body, and coal gas is effectively ensured and does not leak, while prevent outside air from entering blower fan, it is really achieved the mesh of gas defence anti-explosion safety operation
's.
(2) gas compressor of the invention, is provided with stainless steel sleeve, main shaft can be avoided to give birth between main shaft sealing device and main shaft
After rust, carbocyclic ring contacts with main shaft produces larger abrasion, and so as to extend the service life of carbocyclic ring, design and installation is ingenious, and not shadow
The use of gas compressor is rung, is cut down expenses.
(3) gas compressor of the invention, is provided with back blades between impeller and casing, can the axial direction of active balance blower fan push away
Power, extend the service life of bearing.
(4) gas compressor of the invention, gear air ring is provided between air inlet and impeller, when can obviously reduce blower fan operating
Internal leakage, effectively improve the efficiency of blower fan.
(5) gas compressor of the invention, carbocyclic ring use split type structure, optimal, it is made up of, passes through three slice, thin piece carbocyclic rings
Locating piece fixed position, is connected by spring；Locating piece is fixed in seal by the present invention, it is ensured that the carbocyclic ring when blower fan operates
Main shaft will not be followed to rotate.
(6) gas compressor of the invention, main shaft sealing device middle part are provided with nitrogen-sealed chamber, during fan operation its
In be filled with the nitrogen of certain pressure, rubber asbestos packing_seal, the seal form of several combinations are set on the outside of main shaft sealing device
The main shaft seal of this gas of high flow rate pressuring machine is formd, has greatly reinforced the sealing property of gas compressor, is avoided because gas
Body leaks and influences the safe operation of blower fan.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of the present invention；
Fig. 2 is the structural representation of main shaft sealing device in the present invention；
Fig. 3 is the structural representation of carbocyclic ring in the present invention；
Fig. 4 is the schematic cross-section that the structure of carbocyclic ring in the present invention is splitted along center line.
Embodiment
Below in conjunction with drawings and examples, the present invention will be described in further detail.It is it should be appreciated that described herein
Specific embodiment only to explain the present invention, is not intended to limit the present invention.
An embodiment of the invention discloses a kind of gas compressor, as shown in Figure 1：Including air inlet 1, casing 3,
Impeller 4, main shaft sealing device 6, main shaft 7 and bearing housing 8；The front side of casing 3 is provided with connecting flange faces, and air inlet 1 is consolidated by bolt
Surely connecting flange faces are arranged on, impeller 4 is arranged in casing 3, and main shaft 7 penetrates the rear side of 3 inner impeller of casing 4, impeller 4 and main shaft 7
Between can be connected by flat key；Flat key connection can transmit moment of torsion and realize the radially fixed of impeller 4, while need to utilize master
Locking nut on axle 7 carries out the axial restraint of impeller 4.Sealed between main shaft 7 and casing 3 using main shaft sealing device 6, main shaft 7
Rear end is fixed on bearing housing 8 by bearing.Certainly, can be filled out between air inlet 1 and the front side connecting flange faces of fan casing 3
Bedding and padding are filled, bedding and padding can be compressed to 1~2mm and realize sealing, the material sealing of the filling bedding and padding of selection by air inlet 1 when installing
It is good, the sealing effectiveness the same with flange processing is played, flange can be reduced and thicken the cost brought with flange face overall processing；As
Preferably, bedding and padding can be selected as polytetrafluoroethylene (PTFE) bedding and padding, can also other plasticity good compound-material or polymeric material
Material.
When gas compressor operates, impeller 4 should be caused to be rotated with the rear side of casing 3 close to the space of main shaft 7 in impeller 4
When form the appropriate negative pressuren zone of pressure, ensure the operating intensity of impeller 4 again, as shown in Figure 1：It is provided between impeller 4 and casing 3
A pair of back blades 5, the axial thrust of blower fan can be balanced, extend the service life of bearing.Wherein, back blades 5 is provided with two, knot
Configuration shape is identical, and in non-standard T fonts, the both sides and spacing distance being separately mounted between impeller 4 and casing 3 also keep phase
Together, back blades 5 includes cross blade and vertical blade, and cross blade is fixed on the outside of impeller 4, and is close to the outer wall of impeller 4, vertically
Blade is fixedly mounted on inside impeller 4, is fixed with the inwall of impeller 4.
In order to ensure that impeller 4 has enough resistance to elevated temperatures and intensity, rigidity, manufacturing the material of impeller can select respectively
Kind high temperature resistant and the enough metals of intensity or nonmetallic or metal and nonmetallic composite, such as can be selected various heat-resisting
The materials such as steel, stainless steel or industrial ceramics.With reference to figure 1：Gear air ring 2 is additionally provided between air inlet 1 and impeller 4, wind can be reduced
Internal leakage when machine operates, improve the efficiency of blower fan.
As shown in Figure 2：In present embodiment, main shaft sealing device 6 includes seal 9, nitrogen-sealed chamber 10, several carbon
Ring 11 and packing 12；As preferable, the number of carbocyclic ring 11 is even number, and in the present embodiment, carbocyclic ring 11 is provided with 4, often
Individual carbocyclic ring 11, which is spaced, is uniformly sheathed on the bottom side of seal 9；Nitrogen-sealed chamber 10 is closed cavity type, is arranged among seal 9
Position and between 4 carbocyclic rings 11, realizes that carbocyclic ring 11 is provided separately with nitrogen-sealed chamber 10, and packing 12 is arranged on main shaft seal dress
6 outermost is put, and is connected in seal 9.As preferable, packing 12 is rubber asbestos packing, i.e. rubber asbestos packing is set
The outermost in main shaft sealing device 6 is put, and is connected in seal 9.In general, carbocyclic ring (namely graphite annulus), main shaft and wind
The sealing of casing body is mostly that multiple graphite are located on main shaft to carry out graphite grazing, also can between certain graphite annulus and graphite annulus
Grooved hole is opened up, nitrogen filling aperture is provided with slotted eye and butter filling aperture, butter is filled in graphite cuvette.Graphite annulus opens up graphite
Groove, on the one hand can reduce the sealing effectiveness of graphite annulus in itself, set nitrogen filling aperture in graphite cuvette in addition, be filled with nitrogen when
Wait, the risk for destroying this body structure of graphite annulus can be increased, easily cause and come off and damage, graphite annulus belongs to contact on main shaft
Sealing, while add and the ancillary methods such as butter are filled out in inflated with nitrogen and graphite cuvette, though the sealing of casing axle envelope can be improved with multistep
Performance, but security is not also high in other words for existing risk itself, therefore, the whole gas compressor device of present embodiment
Rational in infrastructure, by the sealing of main shaft sealing device, gas compressor overall sealing performance is superior, energy safe transport big flow
While flammable explosive gas, and coal gas can be effectively ensured and do not leak, while prevent outside air from entering blower fan, be really achieved anti-
The purpose of malicious anti-explosion safety operation.
As preferable, as shown in Figure 3：Each carbocyclic ring 11 use split type structure, rather than routine is integrally formed formula,
Ensure that gas compressor has bigger resistance to compression tolerance.Specifically, the carbocyclic ring 11 is made up of some slice, thin piece carbocyclic rings 111, then
Some slice, thin piece carbocyclic rings 111 are fixedly linked to form circular carbocyclic ring successively from beginning to end.As more there is choosing, sub- 111 numbers of carbocyclic ring are choosing
Select 3, per the shape and structure all same of slice, thin piece carbocyclic ring 111, can be both sides with connection dentation and radius identical circular arc
Piece, or there is any cooperation to inlay concavo-convex and radius identical arc plate for both sides, achieve a fixed connection.
As preferable, as shown in Figure 3,4：Be fixed by positioning device phase between the adjacent sub- carbocyclic ring 11 of present embodiment
Even；Positioner includes locating piece 14 and retaining spring 15；Locating piece 14 is arranged among per two neighboring sub- carbocyclic ring 111, and
Carry out the fixation in centre position；Retaining spring 15 is connected per two neighboring sub- carbocyclic ring 111.As preferable, locating piece 14 is length
Bar shaped locating piece can also be trapezoidal shape locating piece；Locating piece can be soft, or hard, the locating piece of hard
Preferably aluminum alloy material；Retaining spring is elastomeric spring, and the coefficient of stiffiness is that 2.5~3.5N/cm is preferred.
As preferable, as shown in Figure 1,3：The part that locating piece 14 is higher by among two neighboring sub- carbocyclic ring 111 is fixed on
In seal 9, it is ensured that when blower fan operates, carbocyclic ring will not follow main shaft 7 to rotate.
As shown in Figure 1：Nitrogen-sealed chamber 10 includes annular seal space on nitrogen, sealed under nitrogen chamber and seals air flue, on nitrogen
Annular seal space is closed cavate, is arranged on the upside of seal, and annular seal space is by sealing air flue and sealed under nitrogen chamber on the nitrogen
Through connection；Sealed under nitrogen chamber is closed cavate, is arranged on seal bottom side, and is arranged on two carbocyclic rings of arbitrary neighborhood
Between and it is parallel with it.Nitrogen-sealed chamber is connected by sealing air flue, expands nitrogen-sealed intracavitary storage tolerance, sealing effectiveness
It is good.Certainly, the big I for opening up cavity is arbitrarily adjusted, and according to needed for actual production, determines that cavity opens up size.
As preferable, stainless steel sleeve 13 is additionally provided between main shaft sealing device 6 and main shaft 7, main shaft 7 can be avoided to get rusty
Afterwards, carbocyclic ring 11 contacts with main shaft 7 produces larger abrasion, so as to extend the service life of carbocyclic ring 11.
The preferred embodiments of the present invention have shown and described in described above, as previously described, it should be understood that the present invention is not office
Be limited to form disclosed herein, be not to be taken as the exclusion to other embodiment, and available for various other combinations, modification and
Environment, and can be changed in the scope of the invention is set forth herein by the technology or knowledge of above-mentioned teaching or association area
It is dynamic., then all should be appended by the present invention and the change and change that those skilled in the art are carried out do not depart from the spirit and scope of the present invention
In scope of the claims.
Claims (10)
1. a kind of gas compressor, including air inlet (1), casing (3), impeller (4), main shaft sealing device (6), main shaft (7) and
Bearing housing (8)；Connecting flange faces are provided with front side of the casing (3), the air inlet (1), which is bolted, is arranged on connection method
Blue face, the main shaft (7) are penetrated on rear side of the casing (3), and the main shaft seal is used between the main shaft (7) and casing (3)
Device (6) seals, and main shaft (7) rear end is fixed on the bearing housing (8) by bearing, it is characterised in that：The main shaft
Sealing device (6) includes seal (9), nitrogen-sealed chamber (10), several carbocyclic rings (11) and packing (12)；Each carbocyclic ring
(11) interval is uniformly sheathed on seal (9) bottom side；The nitrogen-sealed chamber (10) is closed cavity type, is arranged on seal
(9) middle part, positioned between several carbocyclic rings (11) and parallel with carbocyclic ring (11), packing (12) is arranged on master for its underpart
The outermost of shaft sealer (6), and connected in seal (9)；The carbocyclic ring (11) uses split type structure, the carbocyclic ring (11)
It is made up of some slice, thin piece carbocyclic rings (111), some slice, thin piece carbocyclic rings (111) are fixedly linked to form circular carbocyclic ring from beginning to end successively.
2. gas compressor according to claim 1, it is characterised in that：The packing (12) is rubber asbestos packing.
3. gas compressor according to claim 1, it is characterised in that：The number of the carbocyclic ring (11) is even number.
4. gas compressor according to claim 3, it is characterised in that：Sub- carbocyclic ring (111) the piece number is 3, every
The shape and structure all same of sub- carbocyclic ring (111).
5. gas compressor according to claim 3, it is characterised in that：Pass through between some slice, thin piece carbocyclic rings (111)
Positioner is fixedly linked；The positioner includes locating piece (14) and retaining spring (15)；The locating piece (14) is set
Among per two neighboring sub- carbocyclic ring (111), and carry out the fixation in centre position；Retaining spring (15) connection is per adjacent two
Individual sub- carbocyclic ring (111).
6. gas compressor according to claim 5, it is characterised in that：The locating piece (14) is higher by two neighboring sub- carbon
Part among ring (111) is fixed in seal (9).
7. the gas compressor according to claim 5 or 6, it is characterised in that：The locating piece (14) positions for strip
Block.
8. gas compressor according to claim 1, it is characterised in that：The nitrogen-sealed chamber (10) includes close on nitrogen
Chamber, sealed under nitrogen chamber and sealing air flue are sealed, annular seal space is closed cavate on the nitrogen, is arranged on the upside of seal (9),
Annular seal space is by sealing air flue and sealed under nitrogen chamber through connection on the nitrogen；The sealed under nitrogen chamber is closed chamber
Formula, it is arranged on seal (9) bottom side.
9. gas compressor according to claim 1, it is characterised in that：The main shaft sealing device (6) and main shaft (7) it
Between be additionally provided with stainless steel sleeve (13).
10. gas compressor according to claim 1, it is characterised in that：It is provided between the impeller (4) and casing (3)
Back blades (5), gear air ring (2) is additionally provided between air inlet (1) and impeller (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510995381.6A CN105604963B (en) | 2015-12-24 | 2015-12-24 | A kind of gas compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510995381.6A CN105604963B (en) | 2015-12-24 | 2015-12-24 | A kind of gas compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105604963A CN105604963A (en) | 2016-05-25 |
| CN105604963B true CN105604963B (en) | 2018-01-16 |
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ID=55985191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510995381.6A Active CN105604963B (en) | 2015-12-24 | 2015-12-24 | A kind of gas compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105604963B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN108980349B (en) * | 2018-09-20 | 2024-02-06 | 重庆通用工业(集团)有限责任公司 | Composite seal for centrifugal fan |
| CN109356880B (en) * | 2018-12-10 | 2024-04-02 | 济南风机厂有限责任公司 | Shaft seal and fan |
| CN110454432B (en) * | 2019-09-20 | 2024-09-10 | 重庆通用工业(集团)有限责任公司 | Combined shaft end seal |
| CN110681498A (en) * | 2019-09-30 | 2020-01-14 | 南京中船绿洲机器有限公司 | Explosion-proof type decanter centrifuge based on carbocycle is sealed |
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| CN201771841U (en) * | 2010-07-16 | 2011-03-23 | 上海德惠特种风机有限公司 | Shaft seal structure of blower |
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| CN202789590U (en) * | 2012-07-26 | 2013-03-13 | 山东省章丘鼓风机股份有限公司 | Novel centrifugal blower applicable to delivering special gases |
| CN203500102U (en) * | 2013-10-22 | 2014-03-26 | 浙江义乌星耀风机有限公司 | Anti-leakage structure of gas axial flow fan |
| CN204532949U (en) * | 2015-04-21 | 2015-08-05 | 浙江聚英风机工业有限公司 | A kind of carbon ring seal centrifugal blower |
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Address after: 226000, No. 666, Zhong Xiu Dong Lu, Jiangsu, Nantong Patentee after: Jintongling Technology Group Co.,Ltd. Address before: 226000, No. 666, Zhong Xiu Dong Lu, Jiangsu, Nantong Patentee before: JIANGSU JINTONGLING FLUID MACHINERY TECHNOLOGY Co.,Ltd. |
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