CN103423165B - Vertical totally-enclosed two-stage screw bolt refrigerant compressor - Google Patents
Vertical totally-enclosed two-stage screw bolt refrigerant compressor Download PDFInfo
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- CN103423165B CN103423165B CN201310375995.5A CN201310375995A CN103423165B CN 103423165 B CN103423165 B CN 103423165B CN 201310375995 A CN201310375995 A CN 201310375995A CN 103423165 B CN103423165 B CN 103423165B
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Abstract
The invention discloses a kind of vertical totally-enclosed two-stage screw bolt refrigerant compressor, provide that a kind of compact structure, boundary dimension are little, take up space little compressor.Comprise the oil leab of casing, body, the first end cap, the second end cap, high pressure stage male rotor, high pressure stage female rotor, low pressure stage male rotor, low pressure stage female rotor, compressible drive mechanism, oil separator, intermediate pressure mixing chamber and rotatable parts.Casing is enclosed construction, and body, the first end cap, the second end cap, high pressure stage male rotor, high pressure stage female rotor, low pressure stage male rotor, low pressure stage female rotor, compressible drive mechanism and oil separator are positioned at casing internal; Body two ends respectively with the first end cap and the second end cap releasable connection; The high pressure stage cylinder and low pressure stage cylinder that run through whole body is provided with in the axial direction in body.Compressor arrangement of the present invention is compact, easy for installation, boundary dimension is little, ride quality is high, smooth running, working stability.
Description
Technical field
The present invention relates to refrigeration technology field, particularly relate to a kind of vertical totally-enclosed two-stage screw bolt refrigerant compressor.
Background technique
In multiple industry and civilian refrigeration and cold storage applications such as aquatic products, crops and chemical industry, need low temperature environment in a lot of situation, Vapor Compression Refrigeration Cycle system is widely used.Capital equipment in Vapor Compression Refrigeration Cycle system is refrigeration compressor, and along with the application of numerical control machine tool, improving constantly of machining accuracy, the using scope of Spiral Lobe Refrigeration Compressor constantly increases.
Existing cryogenic freezing cold storage refrigeration system Spiral Lobe Refrigeration Compressor is mostly opening type, and high and low pressure stage compressor is single stage compressor combo or adopts single machine two-stage formula, and refrigerating capacity is comparatively large, boundary dimension is large.And, control easily small-sized cryogenic freezing cold storage refrigeration system flexible for use, be then difficult to choose suitable two-stage screw bolt refrigerant compressor.Therefore, urgently development is stablized, compact structure, boundary dimension are little, take up space little two-stage screw bolt refrigerant compressor.
Summary of the invention
The object of the invention is for existing technological deficiency, provide that a kind of compact structure, boundary dimension are little, take up space little vertical totally-enclosed two-stage screw bolt refrigerant compressor.
The technological scheme adopted for realizing object of the present invention is:
A kind of vertical totally-enclosed two-stage screw bolt refrigerant compressor, comprise the oil leab of casing, body, the first end cap, the second end cap, high pressure stage male rotor, high pressure stage female rotor, low pressure stage male rotor, low pressure stage female rotor, compressible drive mechanism, oil separator, intermediate pressure mixing chamber and rotatable parts, described casing is enclosed construction, and described body, the first end cap, the second end cap, high pressure stage male rotor, high pressure stage female rotor, low pressure stage male rotor, low pressure stage female rotor, compressible drive mechanism and oil separator are positioned at described casing internal, described body and described casing inner wall closely cooperate and fixedly mount, described body two ends respectively with described first end cap and the second end cap releasable connection, the high pressure stage cylinder and low pressure stage cylinder that run through whole body is provided with in the axial direction in described body, the described high pressure stage male rotor and high pressure stage female rotor that cooperatively interact are installed in described high pressure stage cylinder, the described low pressure stage male rotor and low pressure stage female rotor that cooperatively interact are installed in described low pressure stage cylinder, the position that described first cover internal is relative with described high pressure stage cylinder is high pressure stage exhaust cavity, the position that described first cover internal is relative with described low pressure stage cylinder is low pressure stage air aspiration cavity, the both sides of described high pressure stage exhaust cavity are respectively arranged with the high pressure stage relief opening that is communicated with described high pressure stage cylinder and the high pressure stage exhaust port for being connected with high pressure stage vent connection, described high pressure stage exhaust port is sealedly connected with described high pressure stage vent connection, described high pressure stage vent connection is connected with the pressurized gas import of described oil separator, described oil separator is sealedly connected with the high pressure stage outlet pipe through described casing, described high pressure stage outlet pipe is connected with described external condensation device, the both sides of described low pressure stage air aspiration cavity are respectively arranged with the low pressure stage intakeport and the low pressure stage suction port for being communicated with space in described casing that are communicated with described low pressure stage cylinder, the described casing side corresponding with institute low pressure stage suction port is provided with the low pressure stage air inlet tube be communicated with described casing internal, and described low pressure stage air inlet tube is connected with described external boiler, position relative with described high pressure stage cylinder on described second end cap is high pressure stage air aspiration cavity, position relative with described low pressure stage cylinder on described second end cap is low pressure stage exhaust cavity, the both sides of described high pressure stage air aspiration cavity are respectively arranged with the high pressure stage intakeport be communicated with described high pressure stage cylinder and the high pressure stage suction port be communicated with described intermediate pressure mixing chamber by high pressure stage air inlet tube, the both sides of described low pressure stage exhaust cavity are respectively arranged with the low pressure stage relief opening be communicated with described low pressure stage cylinder and the low pressure stage exhaust port be communicated with described intermediate pressure mixing chamber by low pressure stage vent connection, described casing is provided through the liquid-spraying pipe that described casing is communicated with described intermediate pressure mixing chamber, described compressible drive mechanism drives described low pressure stage male rotor and described high pressure stage male rotor to rotate along equidirectional, the center line of described body, high pressure stage male rotor, high pressure stage female rotor, low pressure stage male rotor and low pressure stage female rotor is Vertical direction, the radial side that described high pressure stage intakeport is thrown off mutually at the tooth of described high pressure stage male rotor and high pressure stage female rotor, the radial side that described high pressure stage relief opening is clogged mutually at the tooth of described high pressure stage male rotor and high pressure stage female rotor, the radial side that described low pressure stage intakeport is thrown off mutually at the tooth of described low pressure stage male rotor and low pressure stage female rotor, the radial side that described low pressure stage relief opening is clogged mutually at the tooth of described low pressure stage male rotor and low pressure stage female rotor.
Described compressible drive mechanism is drive motor, and the stators and rotators of described drive motor is installed in described casing, and the rotor of described drive motor drives described low pressure stage male rotor.
The main back shaft of high pressure stage male rotor at described high pressure stage male rotor two ends and the auxiliary back shaft of high pressure stage male rotor are rotatably connected with described first end cap and the second end cap respectively, through described first end cap of the main back shaft of described high pressure stage male rotor, non-through described second end cap of the auxiliary back shaft of described high pressure stage male rotor; The main back shaft of high pressure stage female rotor at described high pressure stage female rotor two ends and the auxiliary back shaft of high pressure stage female rotor are rotatably connected with described first end cap and the second end cap respectively, non-through described first end cap of the main back shaft of described high pressure stage female rotor, non-through described second end cap of the auxiliary back shaft of described high pressure stage female rotor; The main back shaft of low pressure stage male rotor at described low pressure stage male rotor two ends and the auxiliary back shaft of low pressure stage male rotor are rotatably connected with described first end cap and the second end cap respectively, through described first end cap of the main back shaft of described low pressure stage male rotor, non-through described second end cap of the auxiliary back shaft of described low pressure stage male rotor; The main back shaft of low pressure stage female rotor at described low pressure stage female rotor two ends and the auxiliary back shaft of low pressure stage female rotor are rotatably connected with described first end cap and the second end cap respectively, non-through described first end cap of the main back shaft of described low pressure stage female rotor, non-through described second end cap of the auxiliary back shaft of described low pressure stage female rotor; The rotor compact siro spinning technology of the main back shaft of described low pressure stage male rotor and described drive motor, the main back shaft of described low pressure stage male rotor is connected with the main back shaft of described high pressure stage male rotor by driving mechanism, the rotor of described drive motor drives the main back shaft of described low pressure stage male rotor, and the main back shaft of described low pressure stage male rotor drives the main back shaft of described high pressure stage male rotor.
Driving mechanism between the main back shaft of the main back shaft of described low pressure stage male rotor and described high pressure stage male rotor comprises the first gear, second gear, 3rd gear and gear shaft, described first gear is installed on the main back shaft of described low pressure stage male rotor, described second gear is installed on described gear shaft, described 3rd gear is installed on the main back shaft of described high pressure stage male rotor, described compressible drive mechanism drives described low pressure stage male rotor to turn clockwise, by described driving mechanism, high pressure stage male rotor clockwise direction described in described 3rd gear driven rotates, the non-through outside being installed on described first end cap of described gear shaft.
Described casing is welded by the first casing and the second casing.
Described body is connected respectively by bolt with between described first end cap and the second end cap.
Described liquid-spraying pipe is connected with the fraction highly pressurized liquid throttling decompression tube come from condenser, the position corresponding with described low pressure stage relief opening is provided with low pressure stage exhaust gas temperature sensor, described low pressure stage exhaust gas temperature sensor is connected with refrigerant system controller, controls by described low pressure stage exhaust gas temperature sensor the Fluid Volume spurting into described intermediate pressure mixing chamber from described liquid-spraying pipe 1.
The oil leab of described rotatable parts comprises the oil leab of disalignment on the main back shaft of described low pressure stage male rotor, be arranged at lubricant oil low pressure stage first oil duct of the main back shaft of connection described low pressure stage female rotor that described first end covers and the main back shaft bearing hole of described low pressure stage male rotor, be arranged at lubricant oil high pressure stage first oil duct of the main back shaft of connection described high pressure stage female rotor that described first end covers and the main back shaft bearing hole of described high pressure stage male rotor, be arranged at lubricant oil low pressure stage second oil duct of the auxiliary back shaft of connection described low pressure stage female rotor on described second end cap and the auxiliary back shaft bearing hole of described low pressure stage male rotor, be arranged at lubricant oil high pressure stage second oil duct of the auxiliary back shaft of connection described high pressure stage female rotor on described second end cap and the auxiliary back shaft bearing hole of described high pressure stage male rotor, be communicated with described high pressure stage first oil duct and be communicated with ditch with first of low pressure stage first oil duct, be communicated with described lubricant oil low pressure stage first oil duct and be communicated with ditch with second of lubricant oil low pressure stage second oil duct, be communicated with the third connecting ditch of described lubricant oil high pressure stage first oil duct and lubricant oil high pressure stage second oil duct, described second is communicated with ditch runs through and is opened near the main back shaft of described low pressure stage female rotor and the auxiliary back shaft place of low pressure stage female rotor, described third connecting ditch runs through and is opened near the main back shaft of described high pressure stage female rotor and the auxiliary back shaft place of high pressure stage female rotor, described oil leab is communicated with described low pressure stage first oil duct.
Under the lubricant oil liquid level that the lower end of the oil exit pipe of described oil separator is goed deep in described casing.
Compared with prior art, the invention has the beneficial effects as follows:
1, vertical totally-enclosed two-stage screw bolt refrigerant compressor of the present invention, high pressure stage male rotor, high pressure stage female rotor, low pressure stage male rotor and low pressure stage female rotor are in a body, all component are enclosed in casing, after utilizing the fraction highly pressurized liquid throttling step-down of condenser, absorb the temperature that heat reduces low pressure exhaust further, compact structure, take up room little, boundary dimension is little, and refrigerating capacity is little, meets the use needs of low temperature test with small-sized cryogenic refrigerating system of scientific research aspect.
2, vertical totally-enclosed two-stage screw bolt refrigerant compressor of the present invention, the Fluid Volume spurting into intermediate pressure mixing chamber is controlled automatically by low pressure stage exhaust gas temperature sensor, and it is convenient to control, and uses flexibly.
3, vertical totally-enclosed two-stage screw bolt refrigerant compressor of the present invention is easy for installation, smooth running, working stability.
Accompanying drawing explanation
Figure 1 shows that the vertical totally-enclosed two-stage screw bolt refrigerant compressor F-F generalized section of the present invention;
Figure 2 shows that A-A sectional drawing;
Figure 3 shows that B-B sectional drawing;
Figure 4 shows that C-C sectional drawing;
Figure 5 shows that D-D sectional drawing;
Figure 6 shows that E-E sectional drawing.
In figure: 1. liquid-spraying pipe, 2. intermediate pressure mixing chamber, 3. the auxiliary back shaft of low pressure stage male rotor, 4. the second end cap, 5. the second casing, 6. body, 7. the first end cap, 8. gear shaft, 9. the main back shaft of high pressure stage male rotor, 10. the main back shaft of low pressure stage male rotor, 11. rotors, 12. motor stators, 13. oil exit pipes, 14. oil separators, 15. high pressure stage vent connections, the main back shaft of 16. low pressure stage female rotor, 17. first casings, 18. high pressure stage outlet pipes, 19. first clamping bolts, 20. low pressure stage female rotors, 21. second clamping bolts, the auxiliary back shaft of 22. low pressure stage female rotor, 23. high pressure stage air inlet tubes, 24. low pressure stage vent connections, 25. low pressure stage air inlet tubes, the auxiliary back shaft of 26. high pressure stage female rotor, the auxiliary back shaft of 27. high pressure stage male rotor, 28. high pressure stage female rotors, 29. high pressure stage male rotors, 30. oilholes, 31. low pressure stage male rotors, 32. high pressure stage cylinders, 33. low pressure stage cylinders, 34. body bolts hole, 35. high pressure stage oil ducts, 36. low pressure stage oil ducts, 37. high pressure stage exhaust ports, 38. low pressure stage suction ports, the main back shaft of 39. high pressure stage female rotor, 40. first end bonnet bolt holes, 41. high pressure stage relief openings, 42. first gears, 43. second gears, 44. the 3rd gears, 45 low pressure stage intakepories.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
The vertical totally-enclosed two-stage screw bolt refrigerant compressor schematic diagram of the present invention as shown in Figures 1 to 6, comprises the oil leab of casing, body 6, first end cap 7, second end cap 4, high pressure stage male rotor 29, high pressure stage female rotor 28, low pressure stage male rotor 31, low pressure stage female rotor 20, compressible drive mechanism, oil separator 14, intermediate pressure mixing chamber 2 and rotatable parts.Described casing is enclosed construction, and in the present embodiment, described casing is welded by the first casing 17 and the second casing 5.Described body 6, first end cap 7, second end cap 4, high pressure stage male rotor 29, high pressure stage female rotor 28, low pressure stage male rotor 31, low pressure stage female rotor 20, compressible drive mechanism and oil separator 14 are positioned at described casing internal, described body 6 and described casing inner wall closely cooperate and fixedly mount, described body 6 two ends respectively with described first end cap 7 and the second end cap 4 releasable connection, the high pressure stage cylinder 32 running through whole body and low pressure stage cylinder 33 is provided with in the axial direction in described body 6, the described high pressure stage male rotor 29 and high pressure stage female rotor 28 that cooperatively interact are installed in described high pressure stage cylinder 32, the described low pressure stage male rotor 31 and low pressure stage female rotor 20 that cooperatively interact are installed in described low pressure stage cylinder 33, the inner position relative with described high pressure stage cylinder 32 of described first end cap 7 is high pressure stage exhaust cavity, the inner position relative with described low pressure stage cylinder 33 of described first end cap 7 is low pressure stage air aspiration cavity, the both sides of described high pressure stage exhaust cavity are respectively arranged with the high pressure stage relief opening 41 that is communicated with described high pressure stage cylinder and the high pressure stage exhaust port 37 for being connected with high pressure stage vent connection 15, described high pressure stage exhaust port 37 has been welded to connect high pressure stage vent connection 15, described high pressure stage vent connection 15 is connected with the pressurized gas import of described oil separator 14, described oil separator 14 is sealedly connected with the high pressure stage outlet pipe 18 through described casing, described high pressure stage outlet pipe 18 is connected with described external condensation device, the both sides of described low pressure stage air aspiration cavity are respectively arranged with the low pressure stage intakeport 45 be communicated with described low pressure stage cylinder 33 and the low pressure stage suction port 38 be communicated with space in casing, the described casing side corresponding with institute low pressure stage suction port 38 is provided with the low pressure stage air inlet tube 25 be communicated with described casing internal, and described low pressure stage air inlet tube 25 is connected with described external boiler, on described second end cap 4, the position relative with described high pressure stage cylinder 32 is high pressure stage air aspiration cavity, on described second end cap 4, the position relative with described low pressure stage cylinder 33 is low pressure stage exhaust cavity, the both sides of described high pressure stage air aspiration cavity are respectively arranged with the high pressure stage intakeport be communicated with described high pressure stage cylinder 32 and the high pressure stage suction port be communicated with described intermediate pressure mixing chamber 2 by high pressure stage air inlet tube 23, the both sides of described low pressure stage exhaust cavity are respectively arranged with the low pressure stage relief opening be communicated with described low pressure stage cylinder 33 and the low pressure stage exhaust port be communicated with described intermediate pressure mixing chamber 2 by low pressure stage vent connection 24, described casing is provided through the liquid-spraying pipe 1 that described casing is communicated with described intermediate pressure mixing chamber, described compressible drive mechanism drives described low pressure stage male rotor 31 and described high pressure stage male rotor 29 to rotate along equidirectional, the center line of described body, high pressure stage male rotor, high pressure stage female rotor, low pressure stage male rotor and low pressure stage female rotor is Vertical direction.The radial side that described high pressure stage intakeport is thrown off with the tooth of high pressure stage female rotor 28 mutually at described high pressure stage male rotor 29, the radial side that described high pressure stage relief opening 41 is clogged with the tooth of high pressure stage female rotor 28 mutually at described high pressure stage male rotor 29; The radial side that described low pressure stage intakeport 45 is thrown off with the tooth of low pressure stage female rotor 20 mutually at described low pressure stage male rotor 31, the radial side that described low pressure stage relief opening is clogged with the tooth of low pressure stage female rotor 20 mutually at described low pressure stage male rotor 31.
In the present embodiment, described compressible drive mechanism is drive motor, and the stator 12 of described drive motor and rotor 11 are installed in described casing, and the rotor 11 of described drive motor drives described low pressure stage male rotor 31.
In the present embodiment, the mounting type of each rotor is: the main back shaft of high pressure stage male rotor 9 at described high pressure stage male rotor 29 two ends and the auxiliary back shaft of high pressure stage male rotor 27 are rotatably connected with described first end cap 7 and the second end cap 4 respectively, through described first end cap 7 of described high pressure stage male rotor main support 9 axle, non-through described second end cap 4 of the auxiliary back shaft of described high pressure stage male rotor 27; The main back shaft of high pressure stage female rotor 39 at described high pressure stage female rotor two ends and the auxiliary back shaft of high pressure stage female rotor 26 are rotatably connected with described first end cap 7 and the second end cap 4 respectively, non-through described first end cap 7 of the main back shaft of described high pressure stage female rotor 39, non-through described second end cap 4 of the auxiliary back shaft of described high pressure stage female rotor 26; The main back shaft of low pressure stage male rotor 10 at described low pressure stage male rotor 31 two ends and the auxiliary back shaft of low pressure stage male rotor 3 are rotatably connected with described first end cap 7 and the second end cap 4 respectively, through described first end cap 7 of the main back shaft of described low pressure stage male rotor 10, non-through described second end cap 4 of the auxiliary back shaft of described low pressure stage male rotor 3; The main back shaft of low pressure stage female rotor 16 at described low pressure stage female rotor 20 two ends and the auxiliary back shaft of low pressure stage female rotor 22 are rotatably connected with described first end cap 7 and the second end cap 4 respectively, non-through described first end cap 7 of the main back shaft of described low pressure stage female rotor 16, non-through described second end cap 4 of the auxiliary back shaft of described low pressure stage female rotor 22; Rotor 11 compact siro spinning technology of the main back shaft of described low pressure stage male rotor 10 and described drive motor, the main back shaft of described low pressure stage male rotor 10 is connected with the main back shaft 9 of described high pressure stage male rotor by driving mechanism, the rotor 11 of described drive motor drives the main back shaft 10 of described low pressure stage male rotor, and the main back shaft of described low pressure stage male rotor 10 drives the main back shaft 9 of described high pressure stage male rotor.
Driving mechanism between the main back shaft of described low pressure stage male rotor 10 and the main back shaft 9 of described high pressure stage male rotor comprises the first gear 42, second gear 43, 3rd gear 44 and gear shaft 8, described first gear 42 is installed on the main back shaft 10 of described low pressure stage male rotor, described second gear 43 is installed on described gear shaft 8, described 3rd gear 44 is installed on the main back shaft 9 of described high pressure stage male rotor, described compressible drive mechanism drives described low pressure stage male rotor 31 to turn clockwise, by described driving mechanism, described 3rd gear 44 drives described high pressure stage male rotor 29 clockwise direction to rotate, the non-through outside being installed on described first end cap 7 of described gear shaft 8.
Described body is connected respectively by bolt with between described first end cap 7 and the second end cap 4.First end cap 7 is provided with multiple first end bonnet bolt hole 40, the bolt hole corresponding with first end bonnet bolt hole 40 is provided with in the side that body 6 is relative with the first end cap, first end cap 7 is connected by the first clamping bolt 19 with between body 6, the side that body 6 is relative with the second end cap is provided with multiple body bolt hole 34, second end cap 4 is provided with the bolt hole corresponding with multiple body bolt hole 34, and the second end cap 4 is connected by the second clamping bolt 21 with body 6.
Described liquid-spraying pipe 1 is connected with the fraction highly pressurized liquid throttling decompression tube come from condenser, the position corresponding with described low pressure stage relief opening is provided with low pressure stage exhaust gas temperature sensor, described low pressure stage exhaust gas temperature sensor is connected with refrigerant system controller, controls by described low pressure stage exhaust gas temperature sensor the Fluid Volume spurting into described intermediate pressure mixing chamber 2 from described liquid-spraying pipe 1.
The oil leab of described rotatable parts comprises the oil leab 30 of disalignment on the main back shaft 10 of described low pressure stage male rotor, be arranged at lubricant oil low pressure stage first oil duct 36 of the main back shaft of connection described low pressure stage female rotor 16 on described first end cap 7 and described low pressure stage male rotor main back shaft 10 bearing hole, be arranged at lubricant oil high pressure stage first oil duct 35 of the main back shaft of connection described high pressure stage female rotor 39 on described first end cap 7 and described high pressure stage male rotor main back shaft 9 bearing hole, be arranged at lubricant oil low pressure stage second oil duct of the auxiliary back shaft of connection described low pressure stage female rotor 22 on described second end cap 4 and described low pressure stage male rotor auxiliary back shaft 3 bearing hole, be arranged at lubricant oil high pressure stage second oil duct of the auxiliary back shaft of connection described high pressure stage female rotor 26 on described second end cap 4 and described high pressure stage male rotor auxiliary back shaft 27 bearing hole, be communicated with described high pressure stage first oil duct 35 and be communicated with ditch 46 with first of low pressure stage first oil duct 36, be communicated with described lubricant oil low pressure stage first oil duct 36 and be communicated with ditch 47 with second of lubricant oil low pressure stage second oil duct, be communicated with the third connecting ditch of described lubricant oil high pressure stage first oil duct and lubricant oil high pressure stage second oil duct, described second is communicated with ditch 47 runs through and is opened near the main back shaft of described low pressure stage female rotor and the auxiliary back shaft place of low pressure stage female rotor, described third connecting ditch runs through and is opened near the main back shaft of described high pressure stage female rotor and the auxiliary back shaft place of high pressure stage female rotor, described oil leab 30 is communicated with described low pressure stage first oil duct.
In the process that the main back shaft 10 of low pressure stage male rotor rotates, due to the effect of centrifugal force, lubricant oil enters oil leab 30, by other oil ducts of the oil leab of the rotatable parts of connection, and the part surface that lubrication operates mutually.
Under the lubricant oil liquid level that the lower end of the oil exit pipe 13 of described oil separator 14 is goed deep in described casing.
During assembling, first low pressure stage air inlet tube 25 is inserted the respective aperture position of the first casing 17, and be welded to connect, rotor 11, motor stator 12 are put into the first casing 17 location and fixed, the oil separator 14 having welded oil exit pipe 13, high pressure stage vent connection 15 and high pressure stage outlet pipe 18 is put into the first casing 17 location to fix, high pressure stage outlet pipe 18 passes the first casing 17 and welds with the first casing 17, high pressure stage cylinder 32 is put into after high pressure stage female rotor 28 and high pressure stage male rotor 29 being worked good, low pressure stage cylinder 33 is put into after low pressure stage female rotor 20 and low pressure stage male rotor 31 being worked good, second end cap 4 is aimed at body 6, middle placement sealing gasket, the auxiliary back shaft of low pressure stage female rotor 22, the auxiliary back shaft of low pressure stage male rotor 3, the auxiliary back shaft of high pressure stage female rotor 26 and the auxiliary back shaft of high pressure stage male rotor 27 are coordinated with corresponding bearing hole respectively, and is fixed through the second bolt of cover hole by the second clamping bolt 21, first end cap 7 is aimed at body 6, middle placement sealing gasket, the main back shaft of low pressure stage male rotor 10 and the main back shaft of high pressure stage male rotor 9 is made to pass the corresponding bearing hole of the first end cap 7, the main back shaft of low pressure stage female rotor 16 and the main back shaft 39 of high pressure stage female rotor coordinate with bearing hole simultaneously, fixed through first end bonnet bolt hole 40 by the first clamping bolt 19, the corresponding bearing hole of gear shaft 8 to the first end cap 7 is coordinated, main to first gear 42 and low pressure stage male rotor back shaft 10 is coordinated installation, and the second gear 43 coordinates with gear shaft 8 to be installed, and the 3rd gear 44 coordinates with the main back shaft 9 of high pressure stage male rotor to be installed, the main back shaft 10 of low pressure stage male rotor above-mentioned mounted entirety stretched out vertically inserts rotor 11, is welded by the high pressure stage exhaust port 37 of the first end cap 7 with high pressure stage vent connection 15, liquid-spraying pipe 1 will have been welded, the intermediate pressure mixing chamber 2 of high pressure stage air inlet tube 23 and low pressure stage vent connection 24, again the high pressure stage suction port on high pressure stage air inlet tube 23 and the second end cap 4 is welded to connect, low pressure stage exhaust port on low pressure stage vent connection 24 and the second end cap 4 is welded to connect, the lubricant oil calculated is filled with in first casing 17, second casing 5 is aimed at the first casing 17, make liquid-spraying pipe 1 through the corresponding hole of the second casing 5 and weld, weld the second casing 5 and the first casing 17, so far, vertical totally-enclosed two-stage screw bolt refrigerant compressor has been assembled.
During use, low pressure stage air inlet tube 25 is connected with vaporizer, high pressure stage outlet pipe 18 is connected with condenser, the refrigerant vapor of the low-temp low-pressure that vaporizer comes, the space in casing is entered through low pressure stage air inlet tube 25, after motor is cooled, low pressure stage suction port 38 on the first end cap 7, low pressure stage air aspiration cavity and low pressure stage intakeport, enter by the first end cap 7, second end cap 4, low pressure stage female rotor 20, inter-tooth volume space between low pressure stage male rotor 31 and low pressure stage cylinder 33, after compression pressure raises, low pressure stage relief opening on the second end cap 4, low pressure stage exhaust cavity and low pressure stage vent connection 24 enter intermediate pressure mixing chamber 2, the fraction highly pressurised liquid attracted from condenser enters intermediate pressure mixing chamber 2 through liquid-spraying pipe 1 after reducing pressure by regulating flow sprays, spurt into the liquid heat absorption evaporation in fluid, be vented with the low pressure stage of low pressure stage vent connection 24 and mix, through high pressure stage air inlet tube 23, high pressure stage air aspiration cavity on second end cap 4 and high pressure stage intakeport, enter by the first end cap 7, second end cap 4, high pressure stage female rotor 28, inter-tooth volume space between high pressure stage male rotor 29 and high pressure stage cylinder 32, after compression pressure raises, high pressure stage relief opening on the first end cap 7, high pressure stage exhaust cavity and high pressure stage vent connection 15 enter oil separator 14, isolated pressurized gas through high pressure stage outlet pipe 18 discharged to condenser, the isolated lubricant oil of oil separator 14 enters in the lubricating oil bath of the first casing 17 bottom through oil exit pipe 13, lubricant oil in lubricating oil bath is through the oilhole 30 of the bias of the main back shaft 10 of low pressure stage male rotor, under the influence of centrifugal force, oil leab 30 through the main back shaft 10 of low pressure stage male rotor enters low pressure stage first oil duct, enter in the oil groove in the first end cap 7 and the second end cap 4 again, the part surface that lubrication operates mutually.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. a vertical totally-enclosed two-stage screw bolt refrigerant compressor, it is characterized in that, comprise the oil leab of casing, body (6), the first end cap (7), the second end cap (4), high pressure stage male rotor (29), high pressure stage female rotor (28), low pressure stage male rotor (31), low pressure stage female rotor (20), compressible drive mechanism, oil separator (14), intermediate pressure mixing chamber (2) and rotatable parts, described casing is enclosed construction, described body (6), the first end cap (7), the second end cap (4), high pressure stage male rotor (29), high pressure stage female rotor (28), low pressure stage male rotor (31), low pressure stage female rotor (20), compressible drive mechanism and oil separator (14) are positioned at described casing internal, described body (6) and described casing inner wall closely cooperate and fixedly mount, described body (6) two ends respectively with described first end cap (7) and the second end cap (4) releasable connection, the high pressure stage cylinder (32) and low pressure stage cylinder (33) that run through whole body is provided with in the axial direction in described body (6), the described high pressure stage male rotor (29) and high pressure stage female rotor (28) that cooperatively interact are installed in described high pressure stage cylinder (32), the described low pressure stage male rotor (31) and low pressure stage female rotor (20) that cooperatively interact are installed in described low pressure stage cylinder (33), the inner position relative with described high pressure stage cylinder (32) of described first end cap (7) is high pressure stage exhaust cavity, the inner position relative with described low pressure stage cylinder (33) of described first end cap (7) is low pressure stage air aspiration cavity, the both sides of described high pressure stage exhaust cavity are respectively arranged with the high pressure stage relief opening (41) that is communicated with described high pressure stage cylinder and the high pressure stage exhaust port (37) for being connected with high pressure stage vent connection (15), described high pressure stage exhaust port (37) is sealedly connected with described high pressure stage vent connection (15), described high pressure stage vent connection (15) is connected with the pressurized gas import of described oil separator (14), described oil separator (14) is sealedly connected with the high pressure stage outlet pipe (18) through described casing, described high pressure stage outlet pipe (18) is connected with external condensation device, the both sides of described low pressure stage air aspiration cavity are respectively arranged with the low pressure stage intakeport (45) and the low pressure stage suction port (38) for being communicated with space in described casing that are communicated with described low pressure stage cylinder (33), the described casing side corresponding with institute's low pressure stage suction port (38) is provided with the low pressure stage air inlet tube (25) be communicated with described casing internal, and described low pressure stage air inlet tube (25) is connected with external boiler, the upper position relative with described high pressure stage cylinder (32) of described second end cap (4) is high pressure stage air aspiration cavity, the upper position relative with described low pressure stage cylinder (33) of described second end cap (4) is low pressure stage exhaust cavity, the both sides of described high pressure stage air aspiration cavity are respectively arranged with the high pressure stage intakeport be communicated with described high pressure stage cylinder (32) and the high pressure stage suction port be communicated with described intermediate pressure mixing chamber (2) by high pressure stage air inlet tube (23), the both sides of described low pressure stage exhaust cavity are respectively arranged with the low pressure stage relief opening be communicated with described low pressure stage cylinder (33) and the low pressure stage exhaust port be communicated with described intermediate pressure mixing chamber (2) by low pressure stage vent connection (24), described casing is provided through the liquid-spraying pipe (1) that described casing is communicated with described intermediate pressure mixing chamber, described compressible drive mechanism drives described low pressure stage male rotor (31) and described high pressure stage male rotor (29) to rotate along equidirectional, the center line of described body, high pressure stage male rotor, high pressure stage female rotor, low pressure stage male rotor and low pressure stage female rotor is Vertical direction, the radial side that described high pressure stage intakeport is thrown off with the tooth of high pressure stage female rotor (28) mutually described high pressure stage male rotor (29), the radial side that described high pressure stage relief opening (41) is clogged with the tooth of high pressure stage female rotor (28) mutually described high pressure stage male rotor (29), the radial side that described low pressure stage intakeport (45) is thrown off with the tooth of low pressure stage female rotor (20) mutually described low pressure stage male rotor (31), the radial side that described low pressure stage relief opening is clogged with the tooth of low pressure stage female rotor (20) mutually described low pressure stage male rotor (31).
2. vertical totally-enclosed two-stage screw bolt refrigerant compressor according to claim 1, it is characterized in that, described compressible drive mechanism is drive motor, stator (12) and the rotor (11) of described drive motor are installed in described casing, and the rotor (11) of described drive motor drives described low pressure stage male rotor (31).
3. vertical totally-enclosed two-stage screw bolt refrigerant compressor according to claim 2, it is characterized in that, the main back shaft of high pressure stage male rotor (9) at described high pressure stage male rotor (29) two ends and the auxiliary back shaft of high pressure stage male rotor (27) are rotatably connected with described first end cap (7) and the second end cap (4) respectively, through described first end cap (7) of the main back shaft of described high pressure stage male rotor (9), non-through described second end cap (4) of the auxiliary back shaft of described high pressure stage male rotor (27); The main back shaft of high pressure stage female rotor (39) at described high pressure stage female rotor two ends and the auxiliary back shaft of high pressure stage female rotor (26) are rotatably connected with described first end cap (7) and the second end cap (4) respectively, non-through described first end cap (7) of the main back shaft of described high pressure stage female rotor (39), non-through described second end cap (4) of the auxiliary back shaft of described high pressure stage female rotor (26); The main back shaft of low pressure stage male rotor (10) at described low pressure stage male rotor (31) two ends and the auxiliary back shaft of low pressure stage male rotor (3) are rotatably connected with described first end cap (7) and the second end cap (4) respectively, through described first end cap (7) of the main back shaft of described low pressure stage male rotor (10), non-through described second end cap (4) of the auxiliary back shaft of described low pressure stage male rotor (3); The main back shaft of low pressure stage female rotor (16) at described low pressure stage female rotor (20) two ends and the auxiliary back shaft of low pressure stage female rotor (22) are rotatably connected with described first end cap (7) and the second end cap (4) respectively, non-through described first end cap (7) of the main back shaft of described low pressure stage female rotor (16), non-through described second end cap (4) of the auxiliary back shaft of described low pressure stage female rotor (22); Rotor (11) compact siro spinning technology of the main back shaft of described low pressure stage male rotor (10) and described drive motor, the main back shaft of described low pressure stage male rotor (10) is connected with the main back shaft of described high pressure stage male rotor (9) by driving mechanism, the rotor (11) of described drive motor drives the main back shaft of described low pressure stage male rotor (10), and the main back shaft of described low pressure stage male rotor (10) drives the main back shaft of described high pressure stage male rotor (9).
4. vertical totally-enclosed two-stage screw bolt refrigerant compressor according to claim 3, it is characterized in that, driving mechanism between the main back shaft (9) of the main back shaft of described low pressure stage male rotor (10) and described high pressure stage male rotor comprises the first gear (42), second gear (43), 3rd gear (44) and gear shaft (8), described first gear (42) is installed on the main back shaft (10) of described low pressure stage male rotor, described second gear (43) is installed on described gear shaft (8), described 3rd gear (44) is installed on the main back shaft (9) of described high pressure stage male rotor, described compressible drive mechanism drives described low pressure stage male rotor (31) to turn clockwise, by described driving mechanism, described 3rd gear (44) drives described high pressure stage male rotor (29) clockwise direction to rotate, the non-through outside being installed on described first end cap (7) of described gear shaft (8).
5. vertical totally-enclosed two-stage screw bolt refrigerant compressor according to any one of claim 1 to 4, is characterized in that, described casing is welded by the first casing and the second casing.
6. vertical totally-enclosed two-stage screw bolt refrigerant compressor according to claim 5, is characterized in that, described body is connected respectively by bolt with between described first end cap and the second end cap.
7. vertical totally-enclosed two-stage screw bolt refrigerant compressor according to claim 6, it is characterized in that, described liquid-spraying pipe (1) is connected with the fraction highly pressurized liquid throttling decompression tube come from condenser, the position corresponding with described low pressure stage relief opening is provided with low pressure stage exhaust gas temperature sensor, described low pressure stage exhaust gas temperature sensor is connected with refrigerant system controller, controls by described low pressure stage exhaust gas temperature sensor the Fluid Volume spurting into described intermediate pressure mixing chamber from described liquid-spraying pipe (1).
8. vertical totally-enclosed two-stage screw bolt refrigerant compressor according to claim 7, it is characterized in that, the oil leab of described rotatable parts comprises the oil leab (30) of the upper disalignment of the main back shaft of described low pressure stage male rotor (10), be arranged at lubricant oil low pressure stage first oil duct (36) of the main back shaft of connection described low pressure stage female rotor (16) on described first end cap (7) and described low pressure stage male rotor main back shaft (10) bearing hole, be arranged at lubricant oil high pressure stage first oil duct (35) of the main back shaft of connection described high pressure stage female rotor (39) on described first end cap (7) and described high pressure stage male rotor main back shaft (9) bearing hole, be arranged at lubricant oil low pressure stage second oil duct of the auxiliary back shaft of connection described low pressure stage female rotor (22) on described second end cap (4) and described low pressure stage male rotor auxiliary back shaft (3) bearing hole, be arranged at lubricant oil high pressure stage second oil duct of the auxiliary back shaft of connection described high pressure stage female rotor (26) on described second end cap (4) and described high pressure stage male rotor auxiliary back shaft (27) bearing hole, be communicated with described high pressure stage first oil duct (35) and be communicated with ditch (46) with first of low pressure stage first oil duct (36), be communicated with described lubricant oil low pressure stage first oil duct (36) and be communicated with ditch (47) with second of lubricant oil low pressure stage second oil duct, be communicated with the third connecting ditch of described lubricant oil high pressure stage first oil duct and lubricant oil high pressure stage second oil duct, described second is communicated with ditch (47) runs through and is opened near the main back shaft of described low pressure stage female rotor and the auxiliary back shaft place of low pressure stage female rotor, described third connecting ditch runs through and is opened near the main back shaft of described high pressure stage female rotor and the auxiliary back shaft place of high pressure stage female rotor, described oil leab (30) is communicated with described low pressure stage first oil duct.
9. vertical totally-enclosed two-stage screw bolt refrigerant compressor according to claim 8, is characterized in that, under the lubricant oil liquid level that the lower end of the oil exit pipe (13) of described oil separator (14) is goed deep in described casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310375995.5A CN103423165B (en) | 2013-08-26 | 2013-08-26 | Vertical totally-enclosed two-stage screw bolt refrigerant compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310375995.5A CN103423165B (en) | 2013-08-26 | 2013-08-26 | Vertical totally-enclosed two-stage screw bolt refrigerant compressor |
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| Publication Number | Publication Date |
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| CN103423165A CN103423165A (en) | 2013-12-04 |
| CN103423165B true CN103423165B (en) | 2015-08-12 |
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| CN201310375995.5A Expired - Fee Related CN103423165B (en) | 2013-08-26 | 2013-08-26 | Vertical totally-enclosed two-stage screw bolt refrigerant compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104454533B (en) * | 2014-12-10 | 2017-11-17 | 福建雪人股份有限公司 | A kind of semi-enclosed single machine two-stage screw bolt compressor |
| CN108443146A (en) * | 2018-05-24 | 2018-08-24 | 上海维尔泰克螺杆机械有限公司 | A kind of two-stage helical-lobe compressor of band grade room machine mixer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS528082Y2 (en) * | 1972-03-21 | 1977-02-21 | ||
| JP3342615B2 (en) * | 1995-08-31 | 2002-11-11 | 北越工業株式会社 | Oil-cooled screw double compressor |
| JPH0972289A (en) * | 1995-09-06 | 1997-03-18 | Hokuetsu Kogyo Co Ltd | Screw two-stage compressor |
| JP3551758B2 (en) * | 1998-04-17 | 2004-08-11 | 株式会社日立製作所 | Oiled two-stage screw compressor |
| JP4185598B2 (en) * | 1998-10-02 | 2008-11-26 | 株式会社日立産機システム | Oil-cooled screw compressor |
| JP4089037B2 (en) * | 1998-10-06 | 2008-05-21 | 株式会社日立製作所 | Oil-cooled two-stage screw compressor |
| WO2003102422A1 (en) * | 2002-06-03 | 2003-12-11 | Coltec Industries Inc. | Two-stage rotary screw fluid compressor |
| JP2009002253A (en) * | 2007-06-22 | 2009-01-08 | Nabtesco Corp | Screw vacuum pump and its control method |
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