CN116857191A - Vapor screw compressor with non-contact sealing structure - Google Patents
Vapor screw compressor with non-contact sealing structure Download PDFInfo
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- CN116857191A CN116857191A CN202310520290.1A CN202310520290A CN116857191A CN 116857191 A CN116857191 A CN 116857191A CN 202310520290 A CN202310520290 A CN 202310520290A CN 116857191 A CN116857191 A CN 116857191A
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- rod
- end bearing
- rear end
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- 238000007789 sealing Methods 0.000 title claims abstract description 139
- 230000007246 mechanism Effects 0.000 claims abstract description 58
- 230000006835 compression Effects 0.000 claims abstract description 28
- 238000007906 compression Methods 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims description 30
- 238000005461 lubrication Methods 0.000 claims description 29
- 239000010865 sewage Substances 0.000 claims description 8
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 42
- 239000007788 liquid Substances 0.000 description 19
- 230000006698 induction Effects 0.000 description 15
- 239000010687 lubricating oil Substances 0.000 description 14
- 230000009471 action Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001360 synchronised effect Effects 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
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/02—Liquid sealing for high-vacuum pumps or for compressors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/025—Lubrication; Lubricant separation using a lubricant pump
Abstract
The invention discloses a vapor screw compressor with a non-contact sealing structure, and belongs to the technical field of compressors. The invention comprises a shell, wherein a front end bearing cover and a rear end bearing cover are respectively arranged at two ends of the shell, a master rod and a slave rod are arranged in the shell, one end of the front end bearing cover is connected with a front end cover, one end of the rear end bearing cover is connected with a rear end cover, an air suction pipe is arranged at the position, close to the rear end bearing cover, of the shell, a compression port is arranged at one end, close to the front end cover, of the bottom of the shell, a second ring sealing mechanism is arranged at one end, close to the air suction pipe, of the master rod and the slave rod, a first ring sealing mechanism is arranged at one end, close to the compression port, of the master rod, and when the screw compressor operates, the master rod rotates and synchronously rotates through a meshing belt rotor rod of a driving gear and a driven gear, the master rod and the slave rod mutually cooperate to suck gas with water vapor from the air suction pipe, and after compression, the gas vapor is sent out from the compression port, and meanwhile, the corrosion of the connecting mechanism and the transmission mechanism is avoided.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a water vapor screw compressor with a non-contact sealing structure.
Background
The screw type water vapor compressor belongs to a volume rotary compressor, has the advantages of a piston compressor and a turbine compressor, has stable performance, high reliability and large pressure ratio, does not have the oscillation problem of a centrifugal compressor, can reduce the pressure impact of a system, and can reduce the exhaust temperature after the compression through water spray temperature reduction and wet compression, thereby reducing the requirements and the cost of compressor equipment.
The problem is unavoidable defect that the terminal surface of revealing of two compression screw among this compressor, current vapor screw compressor in the market adopts carbocycle seal or dry gas seal's mode to seal more, carbocycle seal belongs to carbocycle seal and mostly belongs to floating ring seal gas throttling formula non-contact seal, it can't seal gas-liquid two-phase state, life is low, carbocycle seal life is usually only about a year, change needs dismouting complete machine, maintenance cost is higher, if there is compressed gas to get into sealing system, or use compressed air can make seal assembly oxidation corrosion serious so inefficacy.
Disclosure of Invention
The present invention is directed to a vapor screw compressor with a non-contact sealing structure, which solves the above-mentioned problems of the prior art.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a vapor screw compressor with non-contact seal structure, includes the casing, the both ends of casing are provided with front end bearing cap and rear end bearing cap respectively, be provided with the bearing in front end bearing cap and the rear end bearing cap, be provided with female pole and son pole in the casing, the one end of front end bearing cap is connected with the front end housing, the one end of rear end bearing cap is connected with the rear end housing, and the casing is close to rear end bearing cap department and is provided with the breathing pipe, and the casing bottom is close to the one end of front end cap and has offered the compression mouth, female pole and son pole's both ends are all installed on front end bearing cap and rear end bearing cap through the bearing rotation, and female pole and son pole are close to the one end of breathing pipe and are installed second ring seal mechanism, and female pole and son pole are close to the one end of compression mouth and are installed first ring seal mechanism, be connected with the outlet duct on the compression mouth, the inside heat pump mechanism that is provided with of outlet duct, first ring seal mechanism and second ring seal mechanism all adopt sealed form to prevent that gas-liquid two phase mixture from revealing, and when the screw compressor was operated, and female pole is rotatory simultaneously through the gear and driven gear and the heat pump of a pair of driven gear and the following the mutual pump of a pair of pinion are compressed gas pump and the heat pump, and the lubrication chamber are compressed from the first oil tank to the compression chamber to the lubrication chamber.
Further, the first ring sealing mechanism and the second ring sealing mechanism comprise a sealing inner sleeve and a sealing outer sleeve, the sealing inner sleeve is sleeved on the master rod, the sealing outer sleeve is sleeved on the sealing inner sleeve, a plurality of circular rings are uniformly arranged on the outer side of the sealing inner sleeve and the inner ring of the sealing outer sleeve, the circular rings on the sealing inner sleeve and the circular rings on the sealing outer sleeve are sequentially staggered, gaps exist between the sealing inner sleeve and the sealing outer sleeve, a plurality of pairs of magnets arranged on the master rod and the slave rod rotate, one magnetic pole of each adjacent magnet facing outwards is sequentially staggered, magnetic force lines of the rotating magnets cut electromagnetic coils, induction current is generated in the electromagnetic coils, the induction current generates an induction magnetic field, the generation of the induction magnetic field is delayed than the magnetic field of the magnets, the induction magnetic field and the magnetic field of the magnets repel each other, namely, the driving ring floats outside the master rod and the slave rod under the influence of the magnets.
Further, three adapter rings are arranged on the outer side of the sealing outer sleeve in the first ring sealing mechanism, the three adapter rings are slidably arranged in the front end bearing cover, a circulation port, a drain port and an air inlet are sequentially formed in the direction from the machine shell to the front end bearing cover, and the circulation port, the drain port and the air inlet are all communicated with the inner ring of the sealing outer sleeve;
two adapter rings are arranged on the outer side of the sealing outer sleeve in the second ring sealing mechanism, a drain outlet and an air inlet are sequentially formed in the direction from the shell to the rear end bearing cover, the drain outlet and the air inlet are also communicated with the inner ring of the sealing outer sleeve, if the female rod and the secondary rod vibrate in the rotating process, the driving ring is still coaxial and concentric with the female rod and the secondary rod under the action of electromagnetic force, gaps between the sealing inner sleeve and the sealing outer sleeve are further kept uniform, the sealing inner sleeve and the sealing outer sleeve are prevented from being worn due to contact, the influence of shaft runout on the sealing gaps is reduced, the tightness of the sealing inner sleeve and the sealing outer sleeve on gas-liquid mixed gas is enhanced, and the adapter rings at the two ends are in sliding sealing with the front end bearing cover and the rear end bearing cover, so that leakage is avoided.
Further, a driving ring is installed at one end of the sealing jacket in the first ring sealing mechanism, which is close to the front end cover, a driving ring is installed at one end of the sealing jacket in the second ring sealing mechanism, which is close to the rear end cover, a plurality of pairs of electromagnetic coils are uniformly arranged in each driving ring, a plurality of pairs of magnets are installed at positions corresponding to the two driving rings on the master rod, when gas-liquid mixed gas passes through the end face of the compression opening, the gas leaks outwards from the connection position of the sealing jacket and the sealing jacket, the gas flows from the high-pressure end in the shell to the low-pressure end of the bearing, the flow speed is accelerated when the gas passes through the gap between the rings and the sealing jacket, the space is suddenly increased when the gas flows into the cavity between the two rings through the gap, the gas flow generates stronger vortex, the kinetic energy of the gas flow is converted into heat energy under the vortex effect, the temperature of the gas returns to the temperature before flowing into the gap from the temperature after flowing through the gap, the pressure in the two ring cavities is little, the gas flows into the gap between the next ring and then flows into the next ring cavity, the gas flows into the gap again, and repeatedly flows out of the cavity from the high pressure after the whole ring and the sealing cavity, and the pressure is reduced after the pressure flows from the ring to the gap repeatedly, and the pressure flows from the gap to the gap more than the gap is reduced, and the pressure leakage is reduced.
Further, the setting mode of the first ring seal mechanism and the second ring seal mechanism at two ends of the son rod is the same as the setting mode on the mother rod, the two sewage outlets are communicated with the atmosphere through pipelines, the circulating port is communicated with the air suction pipe through the pipelines, when leaked gas-liquid mixed gas flows through the circulating port, the leaked gas returns to the air suction pipe through the circulating port to be circularly compressed again, the leakage amount of the gas-liquid mixed gas is reduced, the second ring seal mechanism is arranged at one end of the air suction pipe, therefore, no high pressure leakage exists, the circulating port is not needed, and a small amount of gas which does not enter the circulating port flows out to the atmosphere through the sewage outlets.
Further, the front end housing is stretched out to the one end of female pole, install small-size air pump on the front end housing, female pole and the coaxial setting of drive shaft of small-size air pump, the extraction opening and the atmosphere of small-size air pump link, the pressure gas port of small-size air pump is connected with two air inlets through the pipeline, female pole drives small-size air pump circular telegram work simultaneously, small-size air pump lets in pressure gas between sealed endotheca and the sealed overcoat through the air inlet for the leakage gas that does not discharge through the drain backward flow discharges, prevents to carry the gas of steam and enters into in first lubrication chamber and the second lubrication chamber, thereby prevents steam to the bearing, driving gear, driven gear and wet and corrosion, through setting up air inlet introduction pressure gas, make the whole follow drain discharge atmosphere of gas-liquid mixed gas that leaks, realized the compression to gas-liquid mixed gas, avoid steam to coupling mechanism and drive mechanism's corrosion simultaneously.
Further, the heat pump mechanism includes the hot box, the top of hot box is provided with the metal film, stores the air between hot box and the metal film, the casing outside is provided with the oil tank, be connected with the oil feed pipe between hot box and the oil tank, be provided with the check valve on the oil feed pipe, in the compressed gas heat rises after high-pressure gas is discharged from the compression mouth enters the outlet duct, make hot box heated, the air between hot box and the metal film is heated and expands, make the metal film upwards bulge, the attached elasticity of metal film, the metal film upwards pops up after the bulge reaches a certain extent, the pressure in the hot box reduces, the oil in the oil tank is inhaled in the hot box, cold lubricating oil makes hot box cooling, air contraction, the metal film contracts downwards, extrude lubricating oil from the extrusion.
Further, be first lubricated chamber between front end bearing cap and the front end housing, be the second lubricated chamber between rear end bearing cap and the rear end housing, install the driving gear on the female pole, install driven gear on the son pole, driving gear and driven gear all are located the second lubricated intracavity, driving gear and driven gear meshing transmission, be connected with the oil pipe on the oil tank, be provided with the check valve on the oil pipe that presses, the one end that presses the oil pipe is provided with two branch pipes, two the one end of branch pipe respectively with first lubricated chamber and the second lubricated chamber intercommunication, the oil return hole has been seted up to the bottom in first lubricated chamber and the second lubricated chamber, the oil return hole communicates with the oil tank through the pipeline, and lubricating oil drips into bearing, driving gear and driven gear through pressure oil pipe and branch pipe, and under constantly heated state, the metal film on the hot box repeatedly works and drips the lubrication to adapting unit and drive unit, and unnecessary lubricating oil flows back from the oil return to the oil tank, has realized the autonomous lubrication of mechanism, has improved the delivery efficiency of compressor, reduces the wearing and tearing between adapting unit and the conveying structure.
Compared with the prior art, the invention has the following beneficial effects:
1. the driving ring is regulated in a floating mode under the action of electromagnetic force through the rotation of the main rod and the auxiliary rod, if the main rod and the auxiliary rod vibrate in the rotation process, the driving ring is still coaxial and concentric with the main rod and the auxiliary rod under the action of the electromagnetic force, gaps between the sealing inner sleeve and the sealing outer sleeve are further kept symmetrical, abrasion caused by contact of the sealing inner sleeve and the sealing outer sleeve is avoided, the influence of shaft runout on the sealing gaps is reduced, and the tightness of the sealing inner sleeve and the sealing outer sleeve on gas-liquid mixed gas is enhanced.
2. The small air pump is utilized to introduce pressure gas between the sealing inner sleeve and the sealing outer sleeve through the air inlet, so that leakage gas which is not discharged through the drain outlet is discharged in a backflow mode, the gas carrying water vapor is prevented from entering the first lubrication cavity and the second lubrication cavity, the bearing, the driving gear and the driven gear are prevented from being corroded due to the fact that the water vapor is damped, the compression of gas-liquid mixed gas is achieved, and meanwhile the corrosion of the water vapor to the connecting mechanism and the transmission mechanism is avoided.
3. The hot box is heated through compressed gas heat in the outlet pipe, air between the hot box and the metal film is heated and expanded, so that the metal film bulges upwards, the metal film is additionally elastic, the metal film bulges upwards after a certain degree, the pressure in the hot box is reduced, oil in the oil tank is sucked into the hot box, cold lubricating oil enables the hot box to cool down, the air contracts, the metal film contracts downwards, lubricating oil is extruded from the extrusion part, the connecting part and the transmission part are lubricated in a dripping way, the self-lubricating of the mechanism is realized, the carrying efficiency of the compressor is improved, and the abrasion between the connecting part and the transmission structure is reduced.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic view of the overall appearance structure of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic cross-sectional view of the structure of A-A of FIG. 2 in accordance with the present invention;
FIG. 4 is a schematic side elevational view of the present invention;
FIG. 5 is a schematic cross-sectional view of the structure B-B of FIG. 4 according to the present invention;
FIG. 6 is an enlarged partial schematic view of the area C of FIG. 5 in accordance with the present invention;
FIG. 7 is a schematic view of the seal housing of the present invention;
FIG. 8 is a schematic cross-sectional view of a seal housing of the present invention;
FIG. 9 is a schematic cross-sectional view of the drive ring of the present invention;
FIG. 10 is a schematic cross-sectional view of an outlet tube according to the present invention;
in the figure: 101. a housing; 102. a front end bearing cap; 103. a rear end bearing cap; 104. a front end cover; 105. a rear end cover; 2. an air suction pipe; 3. compressing the mouth; 5. a female rod; 6. a sub-rod; 7. sealing the inner sleeve; 8. sealing the outer sleeve; 9. a drive ring; 10. a magnet; 11. a bearing; 12. a drive gear; 13. a driven gear; 14. a small air pump; 15. a circulation port; 16. a sewage outlet; 17. an air inlet; 18. an electromagnetic coil; 19. an air outlet pipe; 20. a thermal box; 21. a metal film; 22. an oil inlet pipe; 23. and (5) oil pressing pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 10, the present invention provides the following technical solutions: a water vapor screw compressor with non-contact sealing structure comprises a casing 101, wherein a front end bearing cover 102 and a rear end bearing cover 103 are respectively arranged at two ends of the casing 101, bearings are arranged in the front end bearing cover 102 and the rear end bearing cover 103, a female rod 5 and a sub rod 6 are arranged in the casing 101, one end of the front end bearing cover 102 is connected with a front end cover 104, one end of the rear end bearing cover 103 is connected with a rear end cover 105, an air suction pipe 2 is arranged at the position, close to the rear end bearing cover 103, of the casing 101, a compression port 3 is arranged at one end, close to the front end cover 104, of the bottom of the casing 101, both ends of the female rod 5 and the sub rod 6 are rotatably arranged on the front end bearing cover 102 and the rear end bearing cover 103 through bearings 11, a second ring sealing mechanism is arranged at one ends, close to the air suction pipe 2, of the female rod 5 and the sub rod 6, the first ring seal mechanism is installed to the one end that female pole 5 and son pole 6 are close to compression mouth 3, be connected with outlet duct 19 on the compression mouth 3, the inside heat pump mechanism that is provided with of outlet duct 19, first ring seal mechanism and second ring seal mechanism all adopt labyrinth seal's form to prevent that gas-liquid two-phase mixture from revealing, when screw compressor operates, the synchronous rotation of son pole 6 is driven through the meshing of driving gear 12 and driven gear 13 when female pole 5 rotates, female pole 5 and son pole 6 mutually support and inhale the gas that has steam from breathing pipe 2, send out from compression mouth 3 after compressing, the gas is compressed the back temperature rise, the heat pump mechanism utilizes the heat of compressed gas to carry out the lubrication pump in the oil tank to first lubrication chamber and second lubrication chamber, drip the lubrication to bearing 11 and two gears.
The first ring sealing mechanism and the second ring sealing mechanism comprise a sealing inner sleeve 7 and a sealing outer sleeve 8, the sealing inner sleeve 7 is sleeved on the main rod 5, the sealing outer sleeve 8 is sleeved on the sealing inner sleeve 7, a plurality of circular rings are uniformly arranged on the outer side of the sealing inner sleeve 7 and the inner ring of the sealing outer sleeve 8, the circular rings on the sealing inner sleeve 7 and the circular rings on the sealing outer sleeve 8 are sequentially staggered, gaps exist between the sealing inner sleeve 7 and the sealing outer sleeve 8, a plurality of pairs of magnets 10 installed on the main rod 5 and the subsidiary rod 6 rotate, one magnetic pole of each adjacent magnet 10 facing outwards is sequentially staggered, magnetic force lines of the rotating magnets 10 cut electromagnetic coils 18, induction current is generated in the electromagnetic coils 18, the induction current generates an induction magnetic field, the generation of the induction magnetic field lags behind the magnetic field of the magnets 10, the magnetic fields of the induction magnetic fields and the magnets 10 repel each other, namely, the driving ring 9 floats outside the main rod 5 and the subsidiary rod 6 under the influence of the magnets 10, if the main rod 5 and the subsidiary rod 6 vibrate in the rotating process, the driving ring 9 still keeps concentric with the main rod 5 and the subsidiary rod 6 under the effect of electromagnetic force, the sealing ring 8 further enables the sealing inner sleeve 7 and the sealing outer sleeve 8 to be kept in the same axis, the gap between the sealing sleeve 8 and the sealing outer sleeve 8 is further balanced, the gap is prevented from being worn down, the sealing end covers 102 and the sealing end covers are sealed and the sealing end covers are sealed, and the sealing end covers are sealed and the sealing end covers are sealed.
Three adapter rings are arranged on the outer side of a sealing sleeve 8 in a first ring sealing mechanism and are slidably arranged in a front end bearing cover 102, a circulation port 15, a drain port 16 and an air inlet 17 are sequentially arranged on the three adapter rings in the direction from a machine shell 101 to the front end bearing cover 102, the circulation port 15, the drain port 16 and the air inlet 17 are communicated with the inner ring of the sealing sleeve 8, two adapter rings are arranged on the outer side of the sealing sleeve 8 in a second ring sealing mechanism, the drain port 16 and the air inlet 17 are sequentially arranged on the two adapter rings in the direction from the machine shell 101 to a rear end bearing cover 103, the drain port 16 and the air inlet 17 are also communicated with the inner ring of the sealing sleeve 8, a driving ring 9 is arranged at one end, close to the rear end cover 105, of the sealing sleeve 8 in the first ring sealing mechanism, a plurality of pairs of electromagnetic coils 18 are also arranged in the interior of the driving rings 9, a plurality of pairs of magnets 10 are arranged at positions, corresponding to the two driving rings 9, on a parent rod 5,
when the gas-liquid mixture passes through the end face of the compression port 3, the gas leaks outwards from the connection position of the sealing inner sleeve 7 and the sealing outer sleeve 8, the gas flows from the high-pressure end in the casing 101 to the low-pressure end of the bearing 11, the flow speed is accelerated when the gas passes through the gap between the circular rings and the sealing outer sleeve 8, the space is suddenly increased when the gas flows into the cavity between the two circular rings from the gap, the gas flow generates stronger vortex, the kinetic energy of the gas is converted into heat energy under the action of the vortex, the temperature of the gas rises from the temperature when the gas flows through the gap to the temperature before flowing into the gap, the pressure in the two circular ring cavities is little, the gas flows from the cavity into the gap between the next circular ring and the sealing inner sleeve 7, flows out from the whole sealing after repeated continuously, the pressure of the gas flows from the gap once when the gas flows through the gap between the circular ring cavity is reduced from one small, and the pressure of the gas flowing through one tooth is reduced more when the gas flows down to the downstream, and the effect of sealing and leakage reduction is achieved by utilizing the phenomenon.
The first ring seal mechanism at two ends of the son rod 6 and the second ring seal mechanism are arranged in the same mode as the mother rod 5, the two sewage outlets 16 are communicated with the atmosphere through pipelines, the circulation outlet 15 is communicated with the air suction pipe 2 through the pipelines, one end of the mother rod 5 extends out of the front end cover 104, the small air pump 14 is installed on the front end cover 104, the mother rod 5 is coaxially arranged with the driving shaft of the small air pump 14, the air suction opening of the small air pump 14 is connected with the atmosphere, the pressure air opening of the small air pump 14 is connected with the two air inlets 17 through the pipelines, when leaked gas-liquid mixed gas flows through the circulation outlet 15, the leaked gas returns to the air suction pipe 2 through the circulation outlet 15 and is circularly compressed again, the leakage amount of the gas-liquid mixed gas is reduced, the second ring seal mechanism is arranged at one end of the air suction pipe 2, therefore, the circulation outlet 15 is not needed, a small amount of gas which does not enter the circulation outlet 15 flows out into the atmosphere through the sewage outlet 16, the mother rod 5 drives the small air pump 14 to be electrified, the small air pump 14 is electrified, the pressure gas is led into the outer sleeve 7 through the air inlet 17, the air inlet 17 is connected with the outer sleeve 7, the leaked gas is prevented from entering the air inlet 16 through the seal mechanism, the air inlet 16 is prevented from being leaked through the air inlet 16, the air inlet is prevented from being leaked, and the water vapor is prevented from being leaked, and the air is completely, the air is leaked through the air-mixed gas is prevented from being leaked, and the air is leaked through the air pump is directly through the air pump 12.
The heat pump mechanism comprises a heat box 20, a metal film 21 is arranged at the top of the heat box 20, air is stored between the heat box 20 and the metal film 21, an oil tank is arranged outside a casing 101, an oil inlet pipe 22 is connected between the heat box 20 and the oil tank, a one-way valve is arranged on the oil inlet pipe 22, a first lubrication cavity is arranged between a front end bearing cover 102 and a front end cover 104, a second lubrication cavity is arranged between a rear end bearing cover 103 and a rear end cover 105, a driving gear 12 is arranged on a master rod 5, a driven gear 13 is arranged on a sub rod 6, the driving gear 12 and the driven gear 13 are both positioned in the second lubrication cavity, the driving gear 12 and the driven gear 13 are in meshed transmission, an oil pressing pipe 23 is connected on the oil tank, a one-way valve is arranged on the oil pressing pipe 23, one ends of the two branch pipes are respectively communicated with the first lubrication cavity and the second lubrication cavity, oil return holes are arranged at the bottoms of the first lubrication cavity and the second lubrication cavity, the oil return hole is communicated with the oil tank through a pipeline, high-pressure gas is discharged from the compression port 3 and enters the air outlet pipe 19, the heat of the compressed gas is increased, the hot box 20 is heated, air between the hot box 20 and the metal film 21 is heated and expanded, the metal film 21 is upwards bulged, the metal film 21 is additionally elastic, the metal film 21 is upwards sprung after being bulged to a certain extent, the pressure in the hot box 20 is reduced, oil in the oil tank is sucked into the hot box 20, cold lubricating oil cools the hot box 20, the air is contracted, the metal film 21 is contracted downwards, the lubricating oil is extruded, the lubricating oil is dripped onto the bearing 11, the driving gear 12 and the driven gear 13 through the oil pipe 23 and the branch pipe, the metal film 21 on the hot box 20 repeatedly works to drip and lubricate a connecting part and a transmission part under the continuously heated state, and redundant lubricating oil flows back to the oil tank from the oil return hole, the self-lubricating of the mechanism is realized, the carrying efficiency of the compressor is improved, and the abrasion between the connecting part and the conveying structure is reduced.
The working principle of the invention is as follows: when the screw compressor operates, the master rod 5 rotates and drives the sub rod 6 to synchronously rotate through the meshing of the driving gear 12 and the driven gear 13, the master rod 5 and the sub rod 6 are mutually matched to suck vapor from the air suction pipe 2, the vapor is sent out from the compression port 3 after being compressed, a plurality of pairs of magnets 10 arranged on the master rod 5 and the sub rod 6 rotate, one magnetic pole of each adjacent magnet 10 outwards is sequentially staggered, magnetic lines of force of the rotating magnets 10 cut the electromagnetic coil 18, so that induction current is generated in the electromagnetic coil 18, the induction current generates an induction magnetic field, the generation of the induction magnetic field is lagging behind the magnetic field of the magnets 10, the induction magnetic field and the magnetic field of the magnets 10 mutually repel each other, namely, the driving ring 9 floats outside the master rod 5 and the sub rod 6 under the influence of the magnets 10, if the master rod 5 and the sub rod 6 vibrate in the rotating process, the driving ring 9 is still kept coaxial with the master rod 5 and the sub rod 6 under the effect of electromagnetic force, further the clearance between the sealing sleeve 7 and the sealing sleeve 8 is kept balanced, the sealing sleeve 7 is prevented from contacting the sealing sleeve 8, the impact of the jumping shaft on the clearance between the sealing sleeve 7 and the sealing sleeve 8 is reduced, the sealing sleeve end 103 and the sealing end of the sealing sleeve is prevented from being worn down, and the sealing end cover 102 is prevented from being worn down, and the sealing end seal end cover is sealed.
When the gas-liquid mixture passes through the end face of the compression port 3, the gas leaks outwards from the connection position of the sealing inner sleeve 7 and the sealing outer sleeve 8, the gas flows from the high-pressure end in the casing 101 to the low-pressure end of the bearing 11, the flow speed is accelerated when the gas passes through the gap between the circular rings and the sealing outer sleeve 8, the space is suddenly increased when the gas flows into the cavity between the two circular rings from the gap, the gas flow generates stronger vortex, the kinetic energy of the gas is converted into heat energy under the action of the vortex, the temperature of the gas rises from the temperature when the gas flows through the gap to the temperature before flowing into the gap, the pressure in the two circular ring cavities is little, the gas flows from the cavity into the gap between the next circular ring and the sealing inner sleeve 7, flows out from the whole sealing after repeated continuously, the pressure of the gas flows from the gap once when the gas flows through the gap between the circular ring cavity is reduced from one small, and the pressure of the gas flowing through one tooth is reduced more when the gas flows down to the downstream, and the effect of sealing and leakage reduction is achieved by utilizing the phenomenon.
When the leaked gas-liquid mixed gas flows through the circulation port 15, the leaked gas returns to the gas suction pipe 2 through the circulation port 15 and is circularly compressed again, so that the leakage amount of the gas-liquid mixed gas is reduced, the second ring sealing mechanism is arranged at one end of the gas suction pipe 2, no high-pressure leakage exists, the circulation port 15 is not needed, a small amount of gas which does not enter the circulation port 15 flows out to the atmosphere through the drain port 16, the female rod 5 drives the small air pump 14 to be electrified, the small air pump 14 enables the pressure gas to be introduced between the sealing inner sleeve 7 and the sealing outer sleeve 8 through the air inlet 17, the leaked gas which is not discharged through the drain port 16 is discharged in a backflow mode, the gas carrying water vapor is prevented from entering the first lubrication cavity and the second lubrication cavity, the water vapor is prevented from being corroded due to the fact that the bearing 11, the driving gear 12 and the driven gear 13 are wetted, the pressure gas is introduced through the arrangement of the air inlet 17, the leaked gas-liquid mixed gas is completely discharged from the drain port 16 to the atmosphere, the compression of the gas-liquid mixed gas is realized, and the corrosion of the connecting mechanism and the transmission mechanism is avoided.
The high-pressure gas is discharged from the compression port 3 and then enters the gas outlet pipe 19, the heat of the compressed gas is increased, the hot box 20 is heated, the air between the hot box 20 and the metal film 21 is heated and expanded, the metal film 21 is upwards bulged, the metal film 21 is additionally elastic, the metal film 21 is upwards sprung after being bulged to a certain extent, the pressure in the hot box 20 is reduced, the oil in the oil tank is sucked into the hot box 20, the cold lubricating oil cools the hot box 20, the air contracts, the metal film 21 contracts downwards, the lubricating oil is extruded out, the lubricating oil is dripped onto the bearing 11, the driving gear 12 and the driven gear 13 through the oil pipe 23 and the branch pipe, the metal film 21 on the hot box 20 repeatedly works to drip and lubricate the connecting part and the driving part under the continuously heated state, redundant lubricating oil flows back into the oil tank from the oil return hole, the autonomous lubrication of the mechanism is realized, the carrying efficiency of the compressor is improved, and the abrasion between the connecting part and the conveying structure is reduced.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a vapor screw compressor with non-contact seal structure, includes casing (101), the both ends of casing (101) are provided with front end bearing cap (102) and rear end bearing cap (103) respectively, be provided with the bearing in front end bearing cap (102) and rear end bearing cap (103), be provided with female pole (5) and son pole (6) in casing (101), the one end of front end bearing cap (102) is connected with front end housing (104), the one end of rear end bearing cap (103) is connected with rear end housing (105), and casing (101) are close to rear end bearing cap (103) department and are provided with breathing pipe (2), and compression mouth (3) have been seted up to the one end that casing (101) bottom is close to front end housing (104), its characterized in that: the utility model discloses a solar energy heat pump device, including female pole (5) and son pole (6), bearing (11) are rotated through both ends of installing on front end bearing cap (102) and rear end bearing cap (103), and second ring seal mechanism is installed near the one end of breathing pipe (2) to female pole (5) and son pole (6), and first ring seal mechanism is installed near the one end of compression mouth (3) to female pole (5) and son pole (6), be connected with outlet duct (19) on compression mouth (3), outlet duct (19) inside is provided with heat pump mechanism.
2. A water vapor screw compressor having a non-contact seal structure as set forth in claim 1 wherein: the first ring sealing mechanism and the second ring sealing mechanism comprise a sealing inner sleeve (7) and a sealing outer sleeve (8), the sealing inner sleeve (7) is sleeved on the female rod (5), the sealing outer sleeve (8) is sleeved on the sealing inner sleeve (7), a plurality of circular rings are uniformly arranged on the outer side of the sealing inner sleeve (7) and the inner ring of the sealing outer sleeve (8), the circular rings on the sealing inner sleeve (7) and the circular rings on the sealing outer sleeve (8) are sequentially staggered, and a gap exists between the sealing inner sleeve (7) and the sealing outer sleeve (8).
3. A water vapor screw compressor having a non-contact sealing structure as set forth in claim 2 wherein: three adapter rings are arranged on the outer side of the sealing outer sleeve (8) in the first ring sealing mechanism and are slidably mounted in the front end bearing cover (102), a circulation port (15), a sewage outlet (16) and an air inlet (17) are sequentially formed in the direction from the machine shell (101) to the front end bearing cover (102), and the circulation port (15), the sewage outlet (16) and the air inlet (17) are communicated with the inner ring of the sealing outer sleeve (8);
two adapter rings are arranged on the outer side of the sealing outer sleeve (8) in the second ring sealing mechanism, a drain outlet (16) and an air inlet (17) are sequentially formed in the direction from the machine shell (101) to the rear end bearing cover (103), and the drain outlet (16) and the air inlet (17) are also communicated with the inner ring of the sealing outer sleeve (8).
4. A water vapor screw compressor having a non-contact seal structure as set forth in claim 3 wherein: one end of a sealing jacket (8) in the first ring sealing mechanism, which is close to a front end cover (104), is provided with a driving ring (9), one end of the sealing jacket (8) in the second ring sealing mechanism, which is close to a rear end cover (105), is also provided with the driving ring (9), a plurality of pairs of electromagnetic coils (18) are uniformly arranged in each driving ring (9), and a plurality of pairs of magnets (10) are arranged at positions corresponding to the two driving rings (9) on the master rod (5).
5. A water vapor screw compressor having a non-contact seal structure as set forth in claim 4 wherein: the first ring sealing mechanism and the second ring sealing mechanism at two ends of the secondary rod (6) are arranged in the same mode as the primary rod (5), the two sewage outlets (16) are communicated with the atmosphere through pipelines, and the circulating port (15) is communicated with the air suction pipe (2) through the pipelines.
6. A water vapor screw compressor having a non-contact seal structure as set forth in claim 5 wherein: the one end of female pole (5) stretches out front end housing (104), install small-size air pump (14) on front end housing (104), female pole (5) and the coaxial setting of drive shaft of small-size air pump (14), the extraction opening and the atmosphere of small-size air pump (14) link, and the pressure gas port of small-size air pump (14) is connected with two air inlets (17) through the pipeline.
7. A water vapor screw compressor having a non-contact seal structure as set forth in claim 1 wherein: the heat pump mechanism comprises a heat box (20), a metal film (21) is arranged at the top of the heat box (20), air is stored between the heat box (20) and the metal film (21), an oil tank is arranged outside the machine shell (101), an oil inlet pipe (22) is connected between the heat box (20) and the oil tank, and a one-way valve is arranged on the oil inlet pipe (22).
8. A water vapor screw compressor having a non-contact seal structure as set forth in claim 7 wherein: the novel oil return device is characterized in that a first lubrication cavity is formed between the front end bearing cover (102) and the front end cover (104), a second lubrication cavity is formed between the rear end bearing cover (103) and the rear end cover (105), a driving gear (12) is arranged on the main rod (5), a driven gear (13) is arranged on the sub rod (6), the driving gear (12) and the driven gear (13) are both located in the second lubrication cavity, the driving gear (12) and the driven gear (13) are in meshed transmission, an oil pipe (23) is connected to the oil tank, a one-way valve is arranged on the oil pipe (23), two branch pipes are arranged at one ends of the two branch pipes and are respectively communicated with the first lubrication cavity and the second lubrication cavity, and oil return holes are formed in the bottoms of the first lubrication cavity and the second lubrication cavity and are communicated with the oil tank through pipelines.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310520290.1A CN116857191B (en) | 2023-05-10 | 2023-05-10 | Vapor screw compressor with non-contact sealing structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310520290.1A CN116857191B (en) | 2023-05-10 | 2023-05-10 | Vapor screw compressor with non-contact sealing structure |
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| CN116857191A true CN116857191A (en) | 2023-10-10 |
| CN116857191B CN116857191B (en) | 2024-03-19 |
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| CN115823262A (en) * | 2022-12-15 | 2023-03-21 | 浙江博亚精密机械有限公司 | Piston ring sealing structure of vacuum pump |
| CN218882514U (en) * | 2022-11-14 | 2023-04-18 | 丹东隆强科技有限责任公司 | Screw steam compressor |
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| DE102005015212A1 (en) * | 2005-04-02 | 2006-10-05 | Leybold Vacuum Gmbh | Shaft sealing for e.g. rotary screw pump, has seal gap connected with locking gas chamber, and discharge opening connected with gas chamber and suction chamber, where seal gap is arranged between inner and outer sealing rings |
| JP4365443B1 (en) * | 2008-07-29 | 2009-11-18 | 株式会社神戸製鋼所 | Oil-free screw compressor |
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|---|---|
| CN116857191B (en) | 2024-03-19 |
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