CN203785309U - Inverted type gas wave refrigerator consisting of various contact seals - Google Patents

Abstract

The utility model relates to an inverted type gas wave refrigerator consisting of various contact seals, and belongs to the technical field of pressure gas expansion and refrigeration. Through the adoption of the gas wave refrigerator, a mechanical seal with better seal performance is applied to a refrigeration machine, an internal flow type balanced type double-end-surface mechanical seal is used between a gas inlet pipe located on an upper machine body and a gas exhaust pipe on a main machine body, a long narrow type single-end-surface mechanical seal is arranged below a built-in type upper bearing box in an upper-part transition box seat, a thin ladder type single-end-surface mechanical seal is used above a built-in type lower bearing box in the middle of the main machine body, and cooling lubrication systems adopt combined structures, so that complexity, troubles and waste caused by repeat settings are reduced, and the reliable operation of bearings and a seal device is ensured. The mechanical seals have the advantages of good seal performance, small leakage amount, strong vibration resistance, long service life and the like, the defects of the internal leakage of the pressure gas and great influence on the heat insulation efficiency of the refrigerator are effectively overcome, and the refrigerating efficiency can be improved by more than 10%. The structure of the inverted type is simple, the inverted type gas wave refrigerator is conveniently disassembled and assembled, the labor intensity is reduced, and at the same time, great hidden dangers can also be reduced.

Description

Sealed the inverted air wave refrigerating device forming by multiple contact

technical field

The utility model relates to a kind of inverted air wave refrigerating device forming that sealed by multiple contact, belongs to pressed gas swell refrigeration technical field.

Background technology

Air wave refrigerating device (89213744.4), multi-stage gas wave refrigerator (96115022.X), the damping air wave refrigerating device (ZL200810011255.2) that liquidates, outer circulation dissipation air wave refrigerating device (ZL200810011257.1), single hose gas-wave refrigerator (ZL200620089437.8), mixed containing cavity heat dissipation gas wave refrigerating machine (201010107516.8) and axial-flow type are from Chinese patents such as supercharging gas wave refrigeration devices (ZL2013201009090.9), process of refrigerastion all belongs to one or many unsteadiness swell refrigeration, and the something in common that they have is exactly: be all rely on motor to drive or utilize the pressure differential of gas to drive gas distributor spin, with certain rotary speed, pressed gas is done to unsteadiness expansion work to the retention gas in the oscillating tube of each endcapped successively.Accelerate by nozzle expansion with the import supplied materials gas of pressure, by jet expansion ejection at a high speed, inject off and on successively in the vibration adopter of the many endcappeds that front radiation arranges, in managing under the effect of periodicity exciting, gas accepts to inject the pressure energy of gas, and pass through wave system--shock wave, the interaction of compressional wave and dilatational wave completes unsteadiness expansion acting and power conversion, after being converted into heat energy, pressure energy sheds by tube wall again, incident gas is because of the acting consumption self-energy that expands, and the adverse effect of eliminating reflected shock wave reduces temperature and realizes gas refrigeration.

Utilize pressed gas to carry out swell refrigeration, can obtain than using the lower low temperature of working medium circularly cooling.Above-mentioned various air wave refrigerating device all can be worked to more efficient under lower rotating speed.Difference is different on each self-structure, the mechanism reflecting also respectively has its some innovation.

Gas wave refrigeration technology, in the refrigeration occasion extensive use taking gas as medium, especially has practical value in natural petroleum gas field process field.The liquefaction that has been widely used at present lighter hydrocarbons recovery in oil gas, gas dehydration and liquefaction, mist separates, low temperature cold air-flow source and the fields such as low temperature cold source of the gas are provided for defence and military scientific research.That such refrigerating machine generally all has is simple in structure, manufacture and operating cost is low, save the energy, simple and convenient operation and maintenance, high reliability.Though the refrigerating efficiency of aforesaid various air wave refrigerating devices is all higher, can say and be able to far away the degree that reaches, still have very large improved efficiency space.

Though air wave refrigerating device has high efficiency feature under the slow-speed of revolution in actual applications at present, but ubiquitous problem has in real-world operation use procedure: (1) is although rotating speed is lower, but machine efficiency is all larger with the impact of rotating speed and sealing property, its scope fluctuating is up and down all in 10% ~ 30% left and right; (2) under high pressure operating mode, often occur oscillation phenomenon, noise is also more serious simultaneously, and adopter fracture can make to vibrate when serious; (3) because machine intimate has many tumblers and seal, therefore generally comparatively complexity and dismounting are not too convenient for structure.In order to solve the problem of above-mentioned several respects, we have done deep research work.

The experimental results shows: the factor that affects Affect of Isentropic Efficiency of Gas Wave Refrigerator is a lot, includes: leakage rate, nozzle diameter shape and size, hermetically-sealed construction form and the size of machine rotational speed, pressure, pressure reduction, inlet temperature, expansion ratio, pipe range, caliber, treating capacity and medium, the structural design with liquid runnability, refrigeration machine etc.Wherein sealing to choose be the most key and vital, it both determined medium leakage rate number, more determining the height of machine refrigerating efficiency.Therefore just depending on, very important one of the performance quality of a rotary type refrigerating machine selects which kind of sealing.The main sealing that aforementioned various air wave refrigerating device adopts is more consistent, is all substantially to use non-contacting seal, and be labyrinth seal axially various or radially specifically.Why using labyrinth seal is all that this wherein must comprise rotary distributor---jet nozzle etc. because the basic structure of air wave refrigerating device necessarily includes synchronous operated parts on the axle of static body and rotation and axle thereof.Optimal result is made newly to enter machine but thoroughly completely cut off with the later gas that freezes without the gas of refrigeration by the correct use of Sealing Technology, does not mix completely.But realize such target and can be described as very difficult accomplishing.Because this only makes static pieces produce contact, be that the touching of axle and housing is gone up, and reality is so, axle just cannot normal rotation work.

The form of ordinary circumstance lower seal and kind are all a lot, and in engineering, conventional air shaft seal has labyrinth seal, floating-ring seal and mechanical seal.Wherein labyrinth seal leakage rate is large, and the more difficult control life-span of floating-ring seal is short and easily cause bearing and seal failure, and mechanical seal belongs to contact seal, though there is good seal performance, leakage rate is minimum, and resistance to vibration is strong, long service life, do not need frequent adjustment, the advantages such as friction power loss is little, but auxiliary facility complex structure, process and assemble difficulty is more, and cost is relatively high, implement difficulty really very large.

What the inner movable sealing of aforesaid various gas wave refrigeration machineries almost adopted bar none without exception is labyrinth seal, and this is mainly because labyrinth seal belongs to non-contacting seal, nothing friction and obstacle in use, easy realization simple in structure.For air wave refrigerating device, not only leakage rate is large in labyrinth seal in fact, and because air-flow is constantly by sealing backlash, throttling and expansion are constantly alternately being carried out, and this flowing that stagnation of the circulation of vital energy resistance produces will be caused very large vibration and noise, and then reaches the fracture of vibration adopter.Never the reason that uses mechanical seal is because applicable elements and institute that mechanical seal requires while using are restricted a lot, can cause structure comparatively complicated, is not easy to realize.

In order to prevent the gas blending before and after refrigeration and to leak, in refrigeration machine, many places are generally all provided with various forms of movable sealings and external seal, and this also makes this type of machine carrying compression capability have reduction in various degree.Mechanical seal can reasonable adaptation air wave refrigerating device production status, can ensure equipment long-life and stability and safety and turn round.And along with the development of natural gas gas production gathering-transferring technology, the processing of natural gas and produce the trend being just to high pressure development, needs the gases at high pressure swell refrigeration technical equipment of high efficient and reliable more badly and provides support.In order to solve above-mentioned these problems, our utility model seal by multiple contact the inverted air wave refrigerating device forming.

Summary of the invention

The purpose of this utility model will provide a kind of contact seal inversion type handstand shape air wave refrigerating device exactly, has the monomer unsteadiness swell refrigeration machinery of more stable higher refrigerating efficiency under slow-speed of revolution operating mode than existing air wave refrigerating device.

The technical solution that the utility model adopts is: a kind ofly seal by multiple contact the inverted air wave refrigerating device forming and comprise body shell, mainshaft mechanism, main shaft support device, mechanically-sealing apparatus, cooling system and lubricating system, described body shell is from top to bottom by top cover, top transition block, upper machine body, main body and shaft coupling bearing are fastened together successively, described mainshaft mechanism is to connect main shaft by inverted motor through magnet coupler, the lower end of main shaft is link, upper end is blind end, upper semiaxis is provided with one section of hollow shaft, main shaft is provided with the boss that supports swivel nozzle, swivel nozzle comprises the nozzle body and the cylindrical capping that are set on main shaft, and compress by the first round nut pressure cap, the lining that insert one thickness range is 10 ~ 80mm between main body and swivel nozzle, lining circumference is provided with the circular hole with the circumferential equal number of main body, described main shaft support device adopts in the embedded lower bearing housing in main body and is provided with in two clutch shaft bearings and the embedded top bearing housing in top transition block and is provided with second bearing, between blast pipe on air inlet pipe and the main body of described mechanically-sealing apparatus on upper machine body, adopt in-flow balanced type double mechanical seal, the embedded top bearing housing below that is arranged in top transition block is provided with long narrow formula end surface mechanical sealing, and the embedded lower bearing housing top that is positioned at embedding main body is provided with the single mechanical end face seal of thin ladder type formula, described cooling system is provided with at water vat cover base Inner the water vat cover that is positioned at mechanically-sealing apparatus periphery, and the cooling water channel of water vat cover is set at the corresponding site of described body shell, described lubricating system arranges the oil leab of described bearing and mechanical seal at the corresponding site of body shell.

Described body shell is provided with lateral openings, lateral openings on upper machine body connects air inlet pipe, lateral openings on main body connects blast pipe, the hollow shaft upper end of main shaft is provided with air admission hole, lower end is provided with the air flue communicating with swivel nozzle, the spout of swivel nozzle be arranged on lining and main body circumference on the position of 10-99 adopter pore corresponding, on main body, all adopter pores are all transitioned into circular port by rectangular opening by lining, each circular port connects the long vibration adopter of 4-12m.

Clutch shaft bearing in described embedded lower bearing housing and thin ladder type single mechanical end face seal share same metalworking coolant, adopt upper entering and lower leaving mode, in embedded lower bearing housing and thin ladder type single mechanical end face seal, a cover plate is set, and fastening with embedded lower bearing housing.

Adopt technique scheme, this air wave refrigerating device overall structure is vertical, main shaft and bearing bear mainly from axial force, side direction air inlet, side direction exhaust, and all can adopt single tube and multitube, the benefit of side direction inlet and outlet is to change bearing and changes dismounting internals and needn't employ connecting line, can save the trouble of a lot of dismounting lifts to move.Motor is inverted in body lower end, once the hidden danger that can thoroughly avoid motor shaft displacement easily to cause a serious accident; Upper end is without motor, dismounting machine, changes inner body and bearing and all carries out convenient through port above, avoided facing upward head and upwards strike the difficulty of dress bearing and inconvenient in the time that organism bottom is installed bearing.It is little that vertical structure has floor space, the advantage such as the force-bearing situation of main shaft is good, thus main shaft radial dimension is little compared with the horizontal type structure of identical production capacity, and then overall structure can diminish, lighter weight.The principle that the machine overall structure is considered is guaranteeing to realize on the basis of principle function, rational in infrastructure feasible, and mounting or dismounting are convenient.

The mechanical seal, main shaft and the nozzle that mediate for the ease of mounting or dismounting, housing is divided into two parts, main body and upper machine body, main body is in bottom.Consider easily for processing, main shaft also forms by two sections: one section is part hollow shaft and part solid shafting; Another section is solid shafting.Two sections of axles are by being rigidly connected.Gas at normal temperature enters hollow shaft by gas buffer chamber, then, by being contained in the jet nozzle (gas distributor) of the other end in hollow shaft, injects vibration adopter, completes the overall process of gas refrigeration.Hollow shaft is arranged on body stage casing, and near body two ends is solid shafting.Change for convenience the unique consumable accessory bearing of this machine, the two ends of main shaft are respectively provided with a built-in Embedded bearing block.

Because opening end and the nozzle diameter size of the nozzle of the air wave refrigerating device distant body of disembarking in centre position in machine are less, cause on body and to process by manual mode the square runner matching with jet hole and make a slip of the tongue and cross difficulty, therefore the machine arranges insert one ring bush between body and nozzle, to realize the transition between circumference hole.Because gas distributor-nozzle diameter is generally rectangle or square, and Kong Ze on adopter caliber and connected main body is circular, gas penetrates from rectangle or square hole, enter in circular pipe, will inevitably run into dead band Gu Bi, cause not the gas at normal temperature of refrigeration and the gas blending after swell refrigeration from returning pipe, to such an extent as to refrigerating efficiency reduces.Like this by installing a lining additional with transition gradually, the both sides of lining, the inside is square, outside is circular, can guarantee to emanate so not fully to be obstructed.

Known by the research to air wave refrigerating device: after import gas at normal temperature and outlet refrigeration, the blending of gas can significantly reduce the refrigerating efficiency of air wave refrigerating device.So the sealing quality of shaft part on the refrigerating efficiency impact of air wave refrigerating device greatly between inlet tube and outlet.Thereby the sealing in this region is absolutely necessary, and choosing of seal form is most important, if think farthest to improve the refrigerating efficiency of machine, wherein one of effective method is to select a kind of seal form effectively reliably the most.In order to ensure the stability of gas wave machine running, reduce vibration, select mechanical seal as its primary seal.The advantages such as mechanical seal belongs to contact seal, has good seal performance, and leakage rate is minimum, and long service life does not need frequent adjustment, and friction power loss is little, applied widely.

Be applied to applying working condition and the performance requirement of production for air wave refrigerating device, in the middle of main shaft, the sealing of shaft part adopts in-flow balanced type double mechanical seal as primary seal, introduces sealing liquid simultaneously gas medium is carried out to shutoff and friction lubricating.Zone line is the shaft part between inlet tube and outlet just, adopts Double End balanced mechanical seal, both can effectively regulate and balance axially loaded, can also stop mixing of normal temperature gas and the gas that freezes completely, significantly improves refrigerating efficiency.The support at main shaft two ends is respectively arranged with bearing and is provided with separately bearing block, also bearing side arranges respectively single mechanical end face seal therein, role is isolated to gas phase media and metalworking coolant, and sealing and bearing share same oil circuit, save the trouble of setting up respectively separately lubrication channel, simplified refrigeration machine lubrication and cooling system.Bearings at both ends block and middle mechanical seal and water vat block set all adopt built-in mosaic texture, have reduced and body coordinating everywhere, have improved device fabrication precision.

In mechanical seal, the friction of sealing surface and the stirring of sealing ring can constantly produce heat, cause the temperature of sealing device to improve constantly, and from energy balance viewpoint, the frictional heat of mechanical seal is numerically the friction power loss that equals sealing pair.And sealing pair is only limited in certain temperature range and could normally works, so in order to improve the temperature environment of mechanical seal work, the transfer of heat that must constantly mechanical sealing friction pairs be produced be walked.So the machine is provided with water vat cover outward so that it is carried out to cooling down at intermediate mechanical annular seal space, guarantees sealing effectiveness and the life-span of mechanical seal.

Cutting oil plays a part lubricated, cooling and shutoff medium to mechanical seal, and bearing is played to lubrication and cooling effect, so must, to oil piping system matched cooling system, reduce the temperature of lubricating oil.And at the lower support device place of main shaft because the hot temperature of the low temperature outlet recycle oil near machine just in time can guarantee that bearing is not subject to the impact of jet expansion low temperature.

In order to ensure in actual production, the uniformity of maintenance cycle, also adopts mechanical seal to the sealing between main shaft two ends air inlet/outlet and bearing simultaneously.This two places mechanical seal of axle two ends and close bearing share respectively lubricant passage way system and cooling system.The complexity that greatly reduces oil supply system and cooling system, has reduced production cost.

All adopt built-in mosaic texture form to coordinate with body near the bearing block at machine two ends and middle water vat cover base, this segmentation that has reduced body coordinates the Accumulated deviation causing more, disassembling, assembling and replacing bearing is convenient, and parts installing/dismounting all can complete from top to bottom, reduces labor intensity.Interior edge seat all adopts hexagon socket head cap screw fastening, saves space; And establish top wire hole, be convenient to dismounting.

Occur owing to often having inflammable and explosive situation in production process, the leakage of gas usually easily causes the accident.So in the connection place of gas wave refrigeration arbor and motor, adopt magnetic shaft coupling to connect.Magnetic shaft coupling utilizes the effect in magnetic field, not by contact, the thin-walled that sees through magnetic circuit working clearance and separation sleeve transmits power and moment of torsion, thereby cancel the sealing device in traditional machine driving, variation is sealed into static seal, preferably resolve the dielectric leakage problem of motor and axle connection place, realized the motor-driven sealing completely of high pressure occasion.For fear of refrigeration arbor play, cause the inside and outside magnet rotor collision of magnetic shaft coupling, friction, cause the accident, motor is arranged on refrigeration machine lower end.

The beneficial effect that the utility model can reach is:

1, by the enforcement of this contact type sealing structure of mechanical seal, effectively overcome the interior leakage of pressed gas and had a strong impact on the disadvantage of the adiabatic isentropic efficiency of refrigeration machine, can improve refrigerating efficiency more than at least 10%.

2, use problem and the equilibrium problem of the contact seal of the large appearance of axial force under hyperbar can be to a certain degree regulated, the service life of bearing and machine can be significantly improved.

3, by replace the labyrinth seal that belongs to non-contacting seal with this contact seal of mechanical seal, saved machine intimate radially with axial dimensional space, reduced cooperation and the processing link of many places, the accuracy of manufacture improves.

4, motor is inverted in machine lower end, causes a serious accident once can avoid occurring motor shaft displacement; Be that between the rotary electric machine outer magnetic cylinder of drive and static middle spacer sleeve, directly contact friction is on fire.

5, install, dismantle by original changing into all and completing downwards from top inwards by both sides, simplify the structure and install, can greatly reduce labor intensity and workload.

6, the bearing in upper and lower two end supports bearing block and single mechanical end face seal, because position relationship is very near, can share respectively a set of lubricating and cooling system, have save the oil circuit water route of complicated repetition.While having solved running, shake violent and the large difficult problem of noise simultaneously, effectively avoid and the fine large problem that has solved adopter fracture.

Brief description of the drawings

Fig. 1 is the structure chart that is sealed the inverted air wave refrigerating device forming by multiple contact.

In figure: 1, motor, 2, outer magnetic cylinder, 3, shaft coupling bearing, 4, interior magnetic cylinder, 5, main shaft, 5a, boss, 5b, hollow shaft, 6, clutch shaft bearing, 7, embedded lower bearing housing, 8, swivel nozzle, 9, lining, 10, main body, 11, water vat cover base, 12, in-flow balanced type double mechanical seal, 13, hexagon socket head cap screw, 14, water vat cover, 15, intubate, 16, articulation, 17, the capping of water vat cover, 18, O-ring seals, 19, upper machine body, 20, top transition block, 21, long narrow formula single mechanical end face seal, 22, embedded top bearing housing, 23, hexagon socket head cap screw, 24, the second bearing, 25, the second round nut pressure cap, 26, top cover, 27, O-ring seals, 28, articulation, 29, air inlet pipe, 30, O-ring seals, 31, blast pipe, 32, the first round nut pressure cap, 33, vibration adopter, 34, cover plate, 35, thin ladder type single mechanical end face seal, 36, tubular distance piece, 37, clamp nut, 38, middle spacer sleeve.

Detailed description of the invention

Below in conjunction with accompanying drawing, embodiment of the present utility model is done to further detailed description.

Fig. 1 shows the structure chart that is sealed the inverted air wave refrigerating device forming by multiple contact.In figure, seal by multiple contact the housing that the inverted air wave refrigerating device forming comprises the machine being made up of main body 10, upper machine body 19, top transition block 20, top cover 26 and shaft coupling bearing 3 etc., in machine, be provided with the mainshaft mechanism that driven rotary nozzle 8 rotates, bracing or strutting arrangement, mechanically-sealing apparatus and the cooling and lubricating system of main shaft.Body is from top to bottom by top cover 26, top transition block 20, upper machine body 19, main body 10, together with shaft coupling bearing 3 is fixedly connected sequentially with motor 1, mainshaft mechanism is to connect main shaft 5 by inverted motor 1 through magnet coupler, on main shaft 5, rely on a boss plane in order to fixedly mount swivel nozzle 8, because motor is in bottom, therefore the bottom of main shaft 5 is link, upper end is blind end, and upper semiaxis is made as hollow shaft part, because the position of air inlet and the exhaust outlet of emanating is all in this section, one lining 9 is set in the periphery of nozzle location, i.e. insert one lining 9 between main body 10 and swivel nozzle 8, its thickness is between 10 ~ 80mm.On lining 9 circumference, be processed with the pore with main body 10 circumferential same quantity.Because gas distributor nozzle diameter mostly generally is rectangle or square, and hole on adopter caliber and body is all circular, gas penetrates from swivel nozzle 8 rectangles or square hole, enter in circular pipe, will inevitably run into dead band Gu Bi, cause not the gas at normal temperature of refrigeration and the gas blending after swell refrigeration from returning pipe, to cause refrigerating efficiency to reduce.The inner ring of this lining 9 and outer shroud two sides hole shape are different, and the inside is square, and outside is circular, and centre is transition gradually.Can protect to emanate like this and fully and not be stopped.

The lining 9 that on main body 10 circumference, all adopter pores install additional by inside is all transitioned into circle by rectangle, is so-called " old name for the Arabian countries in the Middle East ground circle " shape, and the interface shape matching with vibration adopter 33 top connection bodies, and can weld or detachable connector is connected; The length of vibration adopter 33 is generally chosen between 4 ~ 12 meters, and caliber and pipe range are to determine according to the speed of the size for the treatment of capacity and air-flow.

The bracing or strutting arrangement of main shaft 5 is arranged in the clutch shaft bearing 6 of the embedded lower bearing housing 7 that embeds main body 10 and is arranged in the second bearing 24 of the embedded top bearing housing 22 of top transition block 20, air inlet and exhaust outlet all adopt lateral openings, the air inlet mouth of pipe 29 perforate from upper machine body 19 connects, pressed gas thus import is processed in hollow main shaft 5 in the middle of entering into, from the top down, enter in the swivel nozzle 8 being arranged on main shaft 5, gas through swivel nozzle 8 and lining 9 respectively jet enter into and within peripheral one week, be connected with along main body 10 after the interior reciprocating and expansion work of 10 ~ 99 vibration adopters 33, outer defeated through being located at blast pipe 31 on main body 10.Air inlet pipe and blast pipe are all made as 1-4, and are lateral openings.

There is a flat surface the outside middle part of main shaft 5, is used for relying on location fixing swivel nozzle 8.The top of this platform is hollow shaft part, and below it until end is solid.Main shaft 5 is provided with the interior magnetic cylinder 4 that connects by key, clutch shaft bearing 6, by the fastening swivel nozzle 8 of the first round nut pressure cap 32 with the second fastening bearing 24 of the second round nut pressure cap 25, be provided with three kinds of multi-form mechanical seals in main shaft 5 upper, middle and lower positions in addition.

Swivel nozzle 8 is one of critical components of air wave refrigerating device, and the nozzle of the machine is made up of two parts: a part is the nozzle body that is processed with inner flow passage; The tubular capping of another part, they are to be set on main shaft, compress by round nut.Between capping and nozzle, axle, with seal with O ring, prevent gas leakage.The quantity of nozzle diameter is relevant with gas flow with dimensioned area, and quantity is respectively one, two, three, four, six, eight.

Primary seal between blast pipe 31 on air inlet pipe 29 and main body 10 on upper machine body 19 adopts the mechanical seal in contact seal, considers that the pressure reduction surrounding medium environment large and present position between air inlet and exhaust piper is chosen in-flow balanced type double mechanical seal 12 to stop the high pressure gas leakage of inlet end to the low-pressure end at blast pipe place.The use of in-flow balanced type double mechanical seal 12 must supporting cooling and lubricating system, and on it, Double End place stationary ring and rotating ring two must pass into cooling-lubricant to friction pair, is the position of through dynamic and static ring friction pair.Contraposition perforate on main body 10 and water vat cover base 11, then assemble intubate 15 in hole, make cooling fluid adopt bottom in and top out (d-h) mode.The liquid-through hole that top friction pair is corresponding is holed from upper machine body 19, adopt bottom in and top out (g-c) mode, except directly washing away cooling friction pair, outside frictional heat is taken away, also need to around mechanical seal, set up the cooler environment of a low temperature, to extend the service life of sealing, by reducing the transmission conduction of heat, also can further improve the refrigerating efficiency of refrigeration machine like this.Above water vat cover 14, be provided with in addition the capping 17 of water vat cover, installation O-ring seals 18 it on, then by upper machine body 19 by its compression.The stop pin that is respectively in-flow balanced type double mechanical seal 12 two ends in the inside of water vat cover base 11 and upper machine body 19 is provided with locating slot, and purposes is anti-rotation and spacing.

Single mechanical end face seal is set respectively being arranged in one end that the upper and lower two place's bracing or strutting arrangements of main shaft 5 be positioned at the embedded top bearing housing 22 of top transition block 20 and embed the embedded lower bearing housing 7 of main body 10, to cut off mixing between upper and lower two place's bracing or strutting arrangement place gas phase medias and the required lubricating oil of bearing.

Drive the b hole on top transition block 20 and take over the import for lubricating fluid, it is the sealing friction pair to single mechanical end face seal 21 just, not only play the lubrication friction secondary mirror face that washes away, take away the effect of heat, the lubricating oil entering also can give the second bearing 24 lubricated simultaneously, adopt bottom in and top out (b-a) mode, side direction opening-nozzle from top cover 26, makes lubricating oil get back to fuel tank to recycle.

The clutch shaft bearing 6 and the thin ladder type single mechanical end face seal 35 that are positioned at embedded lower bearing housing 7 also share same metalworking coolant, adopt upper entering and lower leaving (f-e) mode.On embedded lower bearing housing 7 and thin ladder type single mechanical end face seal 35, a cover plate 34 is set, and fastening with embedded lower bearing housing 7, play spacing anti-rotation and certain sealing function.

Air wave refrigerating device is guaranteeing to realize aspect overall structure on the basis of production function, mainly considers rational in infrastructure feasible.Mounting or dismounting are all carried out from top to bottom, have avoided the inconvenience of striking bearing in the time that organism bottom is installed bearing.When installation, first outside body, axle and nozzle are assembled together, then, on main body, bearing block, bearing and seal below nozzle are laid successively and fixed, then axle is struck from top to bottom; Knock behind position, successively parts are assembled in order, the black box on top is then installed.The order of tearing open with dress reversed in order: after the parts above nozzle have been torn open, strike from lower to upper axle, strike after pine, then tear the parts below nozzle open.Gas wave machine mounting or dismounting are convenient, and can ensure matching requirements.

Claims (3)

1. one kind is sealed the inverted air wave refrigerating device forming by multiple contact, comprise body shell, mainshaft mechanism, main shaft support device, mechanically-sealing apparatus, cooling system and lubricating system, it is characterized in that: described body shell is from top to bottom by top cover (26), top transition block (20), upper machine body (19), main body (10) and shaft coupling bearing (3) are fastened together successively, described mainshaft mechanism is to connect main shaft (5) by inverted motor (1) through magnet coupler, the lower end of main shaft (5) is link, upper end is blind end and is provided with hank knotting suspension ring hole, upper semiaxis is provided with one section of hollow shaft (5b), main shaft (5) is provided with the boss (5a) that supports swivel nozzle (8), swivel nozzle (8) comprises the nozzle body and the cylindrical capping that are set on main shaft (5), and compress by the first round nut pressure cap (32), the lining (9) that the wide scope of insert one thickness is 10 ~ 80mm between main body (10) and swivel nozzle (8), lining (9) circumference is provided with and circumferentially equal number and two circular holes that strict centering size is same of main body (10), described main shaft support device adopts in the embedded lower bearing housing (7) in main body (10) and is provided with in two clutch shaft bearings (6) and the embedded top bearing housing (22) in top transition block (20) and is provided with second bearing (24), described mechanically-sealing apparatus is positioned between the blast pipe (31) on air inlet pipe (29) and the main body (10) on upper machine body (19), adopt in-flow balanced type double mechanical seal (12), embedded top bearing housing (22) below that is arranged in top transition block (20) is provided with long narrow formula single mechanical end face seal (21), and embedded lower bearing housing (7) top that is positioned at embedding main body (10) is provided with thin ladder type single mechanical end face seal (35), described cooling system overlaps base (11) Inner at water vat and is provided with the water vat cover (14) that is positioned at mechanically-sealing apparatus periphery, and the cooling water channel of water vat cover (14) is set at the corresponding site of described body shell, described lubricating system arranges the oil leab of described bearing and mechanical seal at the corresponding site of body shell.

2. the inverted air wave refrigerating device forming that sealed by multiple contact according to claim 1, it is characterized in that: described body shell is provided with lateral openings, lateral openings on upper machine body (19) connects air inlet pipe (29), lateral openings on main body (10) connects blast pipe (31), and the magnitude setting of air inlet pipe (29) and blast pipe (31) is 1 ~ 4; Hollow shaft (5b) upper end of main shaft (5) is provided with air admission hole (j), the quantity of air admission hole is 2 ~ 8, lower end is provided with the air flue communicating with swivel nozzle (8), the nozzle exit area of swivel nozzle (8) be arranged on lining (9) and main body (10) circumference on the position of 10-99 adopter pore corresponding, the upper all adopter pores of main body (10) are all transitioned into rectangular opening by circular port by lining (9), and in main body (10) outer rim, each circular port connects the long vibration adopter (33) of 4-12m.

3. the inverted air wave refrigerating device forming that sealed by multiple contact according to claim 1, it is characterized in that: the clutch shaft bearing (6) in described embedded lower bearing housing (7) and thin ladder type single mechanical end face seal (35) share same metalworking coolant, adopt upper entering and lower leaving mode, in embedded lower bearing housing (7) and thin ladder type single mechanical end face seal (35), a cover plate (34) is set, and fastening with embedded lower bearing housing (7).