CN104929907A - No-clearance structure of piston reciprocating compressor adopting L-shaped piston ring - Google Patents

No-clearance structure of piston reciprocating compressor adopting L-shaped piston ring Download PDF

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Publication number
CN104929907A
CN104929907A CN201510128620.8A CN201510128620A CN104929907A CN 104929907 A CN104929907 A CN 104929907A CN 201510128620 A CN201510128620 A CN 201510128620A CN 104929907 A CN104929907 A CN 104929907A
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China
Prior art keywords
piston
clearance
piston ring
type
reciprocating compressor
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CN201510128620.8A
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梁嘉麟
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Individual
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Priority to CN201510128620.8A priority Critical patent/CN104929907A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for 
    • B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/12—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same mounting or demounting piston rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
    • F04B39/0016—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons with valve arranged in the piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/04—Measures to avoid lubricant contaminating the pumped fluid
    • F04B39/041—Measures to avoid lubricant contaminating the pumped fluid sealing for a reciprocating rod
    • F04B39/042—Measures to avoid lubricant contaminating the pumped fluid sealing for a reciprocating rod sealing being provided on the piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1013—Adaptations or arrangements of distribution members the members being of the poppet valve type

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

The invention discloses a no-clearance structure of a piston reciprocating compressor adopting an L-shaped piston ring. The structure strives to instantly eliminate a clearance in a top space of a piston (5) and a clearance in intake and exhaust mechanisms; and an L-shaped nonmetal piston ring (K) without an end gap (F) or an L-shaped metal piston ring (K) with an end gap (F) is adopted to finally enable the piston (5), an exhaust valve plate (3), a conical intake valve block (4), a cylinder (6) and the piston ring (K) to form a no-clearance or quasi no-clearance instant contact state without any geometric space. Therefore, the piston reciprocating compressor appears with a new look, so that conditions are created for the piston exhaust amount and the working compression ratio to both reach or approach 100% or an infinite state, and the piston reciprocating compressor becomes an update product; and because of ultrahigh cost performance, the piston reciprocating compressor becomes the update product of most types of compressors.

Description

Adopt the piston reciprocating compressor of L-type piston ring completely without clearance structure
Technical field
The present invention relates to the technology of piston reciprocating compressor, particularly relate to the technology completely without clearance structure adopting the piston reciprocating compressor of L-type piston ring.
Background technique
Great majority in the compressor kind of current appearance are all the conventional piston compressors by crank-driven, it has: manufacture simple, long service life, cannot Comprehensive Characteristics by comparison to other kind compressor of the less demanding grade of material, this has been unfailing main cause since its comes out.
Piston reciprocating compressor is the same with other compressors, and owing to being structurally subject to the puzzlement of insurmountable " clearance " problem, therefore its exhaust efficiency is or/and compression ratio is difficult to improve all the time.---such as: when compression ratio is close to " 10 ", its air displacement will be reduced to the degree losing its work meaning.
" clearance " in existing piston reciprocating compressor comprising: outer " clearance " that must exist with both exhausts mechanism between top and cylinder inner top and due to air-breathing of piston, and the clearance caused due to the existence of piston ring.
Patent CN1680717A discloses a kind of structural type of " without clearance " piston reciprocating compressor without piston ring.
In addition, JP8-9985B2 discloses a kind of without oily piston reciprocating compressor, this compressor have employed the piston ring that the polymer that comprises such as teflon (PTFE) or polyflon is made, but, in its structure, it is so inevitable that the end gap existence of this piston ring is appointed, and namely the tip-clearance of C type piston ring is appointed is so inevitable.
Summary of the invention
The object of the present invention:
Propose its work compression ratio a kind of can greatly amplitude rise (also likely making piston displacement reach 100%) have employed the structure of piston ring completely without clearance piston reciprocating compressor type that its cross section is L-type.
In order to realize foregoing invention object, intend adopting following technology:
On the basis of the prior art model structure that the present invention runs at piston reciprocating, then meet three organization establishes conditions of following a, b and c:
A. the top outer adapted of piston controls the taper Aspirating valves block that suction port opens and closes;
B. at least with the outside and top flush position of piston on be provided with the piston ring that its section is L-type and end-clearance-free;
C. piston is in forward compression exhaust stroke, finally can back down exhaust valve plate and go out cylinder, piston is in backward travel, when piston is for returning in cylinder completely, be about to, with the moment being blocked in outer exhaust valve plate by cylinder and being separated, piston, exhaust valve plate, taper Aspirating valves block will be formed, between piston ring and cylinder, form " completely without the clearance " contact condition not having geometric space;
Described nonmetal referring to can the oil resistant heatproof high molecule polymer material of deformation;
Described piston and rings carries out both again and flushes end co-ground after being combination to be assembled.
------described piston, in forward compression exhaust stroke, finally can back down the itinerary part that exhaust valve plate goes out cylinder and be less than 1/10 of the whole stroke stroke of piston.
The exhaust valve plate that------is described is the top being positioned at cylinder by the elastic device of spring one class.
Another type design proposal of the present invention, i.e. different being only of this another type design proposal and the nonmetallic piston ring of L-type end-clearance-free:
The piston ring of end gap (comprising: increase the inclination end gap of flow resistance and do not increase the vertical end gap of routine of flow resistance) metal is had to replace by adopting the L-type of different materials in nonmetallic for L-type end-clearance-free piston ring.
The temperature rise control method of the present invention under high compression ratio operating mode:
The water-cooling pattern as explosive motor is adopted to be solved.
Feature of the present invention:
One, due to the present invention adopt its section be L-type end-clearance-free as nonmetal and can the piston ring structure made of the soft macromolecule polymer material of oil resistant heatproof of deformation, this is just for allowing:
Piston ring can be installed easily (packing into bicycle rim like that as cycle casing) the Special annular groove on piston implements simple Positioning Creates condition;
Two, in view of high workload compression ratio required in common engineering is all limited or very limited, this as: if technically can build ten thousand layers of high buildings and large mansions, and in fact the high buildings and large mansions of people's demand are just enough the same close to hundred layers, and this is just for allowing:
Adopt nonmetallic macromolecular material actually as heat-resisting (not as good as metal) of piston ring with under the reality of endurance (there is problem of aging) deficiency, but, still can " secondary high workload compression ratio (and higher than or far above " 10 ") " Applicable scope in use create condition.
Although the air leakage three structures existing the metallic piston ring of " end gap " is limited and minimum, but still will restrict the soaring of compressor high workload compression ratio, but, due to the ubiquity of above-mentioned " two " money reason, again due to the special construction that present invention employs L-type metallic piston ring and coordinate with piston, the overwhelming majority eliminates unborn routine " clearance " space, and this is just for allowing:
Achieve complete machine of the present invention, although can not work under absolute " completely without clearance " state in theory, namely compression ratio is infinitely great, but, be also its work compression ratio can be made under the operating mode being far longer than " 10 " to carry out compression and exhaust work creates condition.---owing to there being the working life of end gap metallic piston ring (there is not the problems such as aging) can higher than the nonmetal piston ring of end-clearance-free, therefore, adopt the former practical significance or appreciable.
Accompanying drawing explanation
Fig. 1 illustrates the embodiment of the present invention in the driving high-power piston reciprocating compressor of horizontal crankshaft.
Fig. 2 illustrate in Fig. 1 type adopt L-type end-clearance-free nonmetal or have the piston ring of end gap metal to run with piston-advance (exhaust) time piston, valve and cylinder relative position.
Fig. 3 illustrate in Fig. 1 type adopt L-type end-clearance-free nonmetal or have the piston ring of end gap metal with piston retreat (air-breathing) run time piston, valve and cylinder relative position.
H: zone of high pressure; W: low pressure area; K: piston ring; F: the end gap of piston ring surface thereof (flow resistance of inclination end gap is greater than the flow resistance of non-inclined end gap---and it is more favourable that flow resistance is more greater than restriction gas leakage); N: the conventional piston ring of common rectangular cross section; P: the suction port of piston head; D: AC motor; 1: cylinder cap; 2: spring; 3: exhaust valve plate; 4: taper Aspirating valves block; 5: piston; 6: cylinder; 7: bent axle; 8: connecting rod; 9: body; 10: set screw.
Embodiment
Fig. 1 illustrates a kind of structure in general of crank-driven type piston reciprocating compressor " completely without clearance ", and it belongs to the most practical typical type of the large air displacement of horizontal low reciprocating frequence.
Fig. 2 illustrates piston 5 when compression exhaust stroke forward, carries the nonmetallic piston ring K of K type end-clearance-free F together, heads on the situation that exhaust valve plate 3 is advanced together in outside, the hole of cylinder 6, obviously:
A., before piston 5 contacts with exhaust valve plate 3, this has just defined the high pressure air cushion will alleviating piston 5 and the mutual collision dynamics of exhaust valve plate 3 therebetween in cylinder 6;
B. now mean: the pressurized gas be compressed into all are clamp-oned zone of high pressure H by piston 5;
C. should guarantee in structural design: K type end-clearance-free F is nonmetal or have the piston ring K of end gap F metal all can not depart from the hole of (going out) cylinder, otherwise this piston ring K just again can not be carry by piston 5 and return to cylinder 6 inside; In addition, piston 5 goes out the itinerary part at cylinder 6 hole, can be controlled in about 1/10th or less of its effective travel length.---the itinerary part that this piston 5 goes out cylinder 6 hole is larger, the action time that high pressure gas participation driven plunger 5 in the H of zone of high pressure returns cylinder 6 is longer, namely can reduce the quantity that this piston 5 sucks the low-pressure gas that low pressure area W provides in suction stroke afterwards will reduce, affect total exhaust quantity of complete machine within the unit time afterwards.---the stroke length that this piston 5 goes out cylinder 6 hole determined by the length of its crankshaft-link rod.
Fig. 3 illustrates piston 5 state by the taper Aspirating valves block 4 inspiration low-pressure gas at its top when the suction stroke retreated.Obvious:
D. downflow type suction mechanism is structurally adopted to meet the model structure requirement of " completely without clearance " most.
E. when piston 5 is in the starting stage of backward travel, namely before the hole of the complete setback cylinder 6 of piston 5, first closed by the hole top of larger-diameter exhaust valve plate 3 by more small-bore cylinder 6, will be formed this moment:
Piston 5 (comprise the K type end-clearance-free F being positioned at its outer rim and top nonmetal or have the piston ring K of end gap F metal), taper Aspirating valves block 4, the state of " completely without the clearance " of moment between exhaust valve plate 3 and cylinder 6.At the moment, the inflation process (Here it is should " completely without clearance " key feature of causing) as residual high pressure gas in prior art would not be there is, directly allow piston 5 enter to have suction stroke stage of actual air-breathing meaning, until filled up in the space in cylinder 6 between piston 5 to exhaust valve plate 3 by the low-pressure gas of inspiration.
In sum, from structural principle of the present invention, when piston 5 is in suction stroke of the present invention but not yet carries out air-breathing, namely mainly under anticyclonic driving, the moment that the hole top of cylinder 6 closes by exhaust valve plate 3 is allowed: most critical will be formed: piston 5, exhaust valve plate 3, taper Aspirating valves block 4, between cylinder 6 and five of K type piston ring K, do not have " completely without clearance " instant contact state of geometric space.---make use of " completely without clearance " instant contact state this point, just can achieve " completely without clearance " type.
Its truncation surface is adopted to be the analysis of the beneficial effect of K type piston ring about " completely without clearance " type:
Because piston 5 and above-mentioned L-type piston ring K (it is dehisced towards the center of circle) are when pressurized gas, (this gradient direction be leave the center of circle and towards circumference) of being contacted in the mode mutually extruded by certain taper gradient, like this, in the middle of the process of piston 5 pressurized gas, just will inevitably increase by one towards the additional press component (variable and be directly proportional to by the pressure of pressurized gas) on cylinder 6 circumferential inner wall direction; When by the pressure of pressurized gas, namely when positive pressure reaches the highest, so, prevent the dynamics of leaking gas between the high pressure at piston 5 two ends and low pressure by the above-mentioned additional component of this piston ring also just to reach maximum (being very beneficial for realizing high compression ratio operating mode) thereupon; And in the priming stroke stage (when the pressure of gas is not high) of piston 5 pressurized gas, the above-mentioned extruding component towards circumferencial direction will not exist or very little.
Obvious: above-mentioned along with this is raised by the pressure of pressurized gas the process that its above-mentioned " the additional press component towards periphery " also increase thereupon, be extremely beneficial in formation high compression ratio.---Here it is under the major premise of " completely without clearance ", adopts the key point place of L-type piston ring.
About the high pressure temperature rise of high compression ratio type of the present invention and the problem of cooling heat dissipation:
High compression ratio or extra-high compression ratio type will inevitably face for the high temperature rise problem compressor, this can adopt general air cooling way to solve, also the water-cooling pattern as motor car engine (being carried out the operation of driven plunger by the blast of gasoline high temperature) can be adopted to solve (belonging to prior art category), more can adopt on railway and make in rail motor set
The existing method of very high-power cooling heat dissipation solved.---the present invention can design the high type of work compression ratio, but, most compression ratios required for service condition is limited, or even it is very limited, such as: the engineering of what the limited compression needed most in prior art become when adopting unit of the present invention compression, need the high temperature rise problem solved will be simply too much; But, even if employ " completely without clearance " of the present invention type, also the form compared to prior art with more high-grade twin-stage or multistage compression engineering can be adopted according to actual conditions.
Obviously, the piston reciprocating compressor of employing L-type piston ring K that proposes of the present invention in clearance structure, disclose the piston ring K being limited by and adopting two large classes of different assembly method constraint to utilize different materials to produce:
They are nonmetal piston ring K of end-clearance-free F and have the metallic piston ring K of end gap F.
The compressor complete machine that the piston 5 of the nonmetal piston ring K of adapted end-clearance-free F is formed, the structural principle of the compressor type that can reach formation " completely without clearance " in theory, but, because its work compression ratio is subject to the restriction of nonmetal macromolecular material resistance to heat, and there is easily aging possibility (affecting the life-span) under the high temperature conditions, therefore, the actual work compression ratio of this type can not accomplish infinitely-great degree, and its air displacement can under above-mentioned " material thermal resistance can restriction " prerequisite (below the highest permissive condition of its temperature rise) reach in theory with in fact 100% exhaust efficiency.
The compressor complete machine that adapted has the piston 5 of the metallic piston ring K of end gap F to form, in theory owing to existing " end gap " of gas leakage, therefore, just can not reach the degree of the structural principle of the compressor type of formation " completely without clearance " in theory, but, actual conditions due to its " end gap " can be accomplished extremely small (allowing " end gap " to be obliquely installed to increase its length increase to make its flow resistance), even not leak gas the degree of (spreadable life allowing this " end gap " gap be essentially " zero " is very long), therefore, its work compression ratio is to claim its degree reaching " accurate completely without clearance " in theory, in fact the degree close to " completely without clearance " can even be reached in other words, the saying that its exhaust degree is guarded should be to reach the exhaust efficiency being in close proximity to 100%.
---in view of high workload compression ratio required in common engineering is all limited or very limited, leave an infinitely great segment distance very large in addition, this as: if ten thousand layers of high buildings and large mansions technically can be built, and in fact the high buildings and large mansions of people's demand are just enough the same close to hundred layers, for this reason:
Prior art engineering demand is met with in fact can reaching easily in theory at it, such as, allow and existingly just must can meet the requirements of gas compression engineering magnitude by many levels (such as permitted multistage compression), just can be solved by single stage compression of the present invention with lifting easily.

Claims (5)

1. adopt the piston reciprocating compressor of L-type piston ring completely without a clearance structure, on the basis of the prior art model structure back and forth run at piston (5), three organization establishes conditions of satisfied following a, b and c again on its structure and material:
A. the top outer adapted of piston (5) controls the taper Aspirating valves block (4) that suction port (P) opens and closes;
B. at least with the outside and top flush position of piston (5) on be provided with its section and be L-type and the piston ring of end-clearance-free (K);
C. piston (5) is in forward compression exhaust stroke, finally can back down exhaust valve plate (3) and go out cylinder (6), piston (5) is in backward travel, when piston (5) is for returning in cylinder (6) completely, be about to, with the moment being blocked in outer exhaust valve plate (3) by cylinder (6) and being separated, piston (5), exhaust valve plate (3), taper Aspirating valves block (4) will be formed, between piston ring (K) and cylinder (6) five, form " completely without the clearance " contact condition not having geometric space;
Described nonmetal referring to can the oil resistant heatproof high molecule polymer material of deformation;
Flush both described piston (5) carries out after being combination to be assembled with piston ring (K) again and hold co-ground.
2. employing L-type piston ring according to claim 1 piston reciprocating compressor completely without clearance structure, described piston (5), in forward compression exhaust stroke, finally can back down the itinerary part that exhaust valve plate (3) goes out cylinder (6) and be less than 1/10 of the whole stroke stroke of piston (5).
3. employing L-type piston ring according to claim 1 piston reciprocating compressor completely without clearance structure, described exhaust valve plate (3) is the top being positioned at cylinder (6) by the elastic device of spring (2) class.
4. adopt the another type design proposal completely without clearance structure of the piston reciprocating compressor of L-type piston ring, i.e. different being only of this another type design proposal and L-type end-clearance-free (F) nonmetallic piston ring (K):
The L-type piston ring (K) of end gap (F) metal is had to replace by adopting the L-type of different materials in L-type end-clearance-free (F) nonmetallic piston ring (K).
5. the piston reciprocating compressor of the nonmetal piston ring of employing L-type according to claim 1 or 4 completely without clearance structure in the temperature rise control method of compressor under high compression ratio operating mode:
The water-cooling pattern as explosive motor is adopted to be solved.
CN201510128620.8A 2014-03-18 2015-03-15 No-clearance structure of piston reciprocating compressor adopting L-shaped piston ring Pending CN104929907A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510128620.8A CN104929907A (en) 2014-03-18 2015-03-15 No-clearance structure of piston reciprocating compressor adopting L-shaped piston ring

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN2014101054653 2014-03-18
CN201410105465 2014-03-18
CN201510128620.8A CN104929907A (en) 2014-03-18 2015-03-15 No-clearance structure of piston reciprocating compressor adopting L-shaped piston ring

Publications (1)

Publication Number Publication Date
CN104929907A true CN104929907A (en) 2015-09-23

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ID=53551460

Family Applications (18)

Application Number Title Priority Date Filing Date
CN201510109868.XA Pending CN104791219A (en) 2014-03-18 2015-03-08 Completely clearance-free structure of piston reciprocating compressor adopting L-shaped end-clearance-free non-metal piston ring
CN201510109924.XA Pending CN104786037A (en) 2014-03-18 2015-03-08 Embedding method for end-gap-free L-shaped nonmetal piston ring and piston and none-clearance structure forming compressor
CN201510109870.7A Pending CN104929900A (en) 2014-03-18 2015-03-08 Method for forming full-clearance-free compressor structure through end-clearance-free V-shaped nonmetal piston ring
CN201510109921.6A Pending CN104763611A (en) 2014-03-18 2015-03-08 Method for forming all-clearance-free compressor structures through non-end-clearance semi-V-shaped nonmetal piston rings
CN201510109923.5A Pending CN104832399A (en) 2014-03-18 2015-03-08 Method for forming fully clearance-free structure compressor by use of end-gap-free L-type non-metallic piston ring
CN201510109867.5A Pending CN104847625A (en) 2014-03-18 2015-03-08 Completely-clearance-free structure with V-shaped end-clearance-free nonmetal piston ring for piston reciprocating compressor
CN201510109922.0A Pending CN104924268A (en) 2014-03-18 2015-03-08 Mounting method adopting end-clearance-free half-V-shaped nonmetal piston ring and full-clearance-free type compressor structure adopting end-clearance-free half-V-shaped nonmetal piston ring
CN201510109866.0A Pending CN104847624A (en) 2014-03-18 2015-03-08 Completely-clearance-free structure with V-shaped end-clearance-free nonmetal piston ring for piston reciprocating compressor
CN201510109869.4A Pending CN104786194A (en) 2014-03-18 2015-03-08 Installation method of end-clearance-free V-shaped non-metal piston ring and completely clearance-free type compressor structure using piston ring
CN201510122732.2A Pending CN104929901A (en) 2014-03-18 2015-03-14 Play-free structure of piston reciprocating compressor employing semi-V piston ring
CN202210119520.9A Pending CN114992090A (en) 2014-03-18 2015-03-14 Structure of L-shaped piston ring with end gap
CN201510122734.1A Pending CN104929903A (en) 2014-03-18 2015-03-14 No-clearance structure of piston reciprocating compressor adopting V-shaped piston ring
CN201510122735.6A Pending CN104929904A (en) 2014-03-18 2015-03-14 Method for forming full-clearance-free piston reciprocating compressor through half-V-shaped piston ring
CN201510122350.XA Pending CN106150972A (en) 2014-03-18 2015-03-14 L-type piston ring is utilized to constitute the method completely without clearance piston reciprocating compressor
CN201510122733.7A Pending CN104929902A (en) 2014-03-18 2015-03-14 Method for forming completely non-clearance piston reciprocating type compressor by utilizing V-shaped piston rings
CN201510128620.8A Pending CN104929907A (en) 2014-03-18 2015-03-15 No-clearance structure of piston reciprocating compressor adopting L-shaped piston ring
CN201510125302.6A Pending CN104929906A (en) 2014-03-18 2015-03-16 Method for forming full-clearance-free structure piston reciprocating compressor through special-shaped piston ring
CN201510125301.1A Pending CN104929905A (en) 2014-03-18 2015-03-16 Piston reciprocating compressor full-clearance-free structure formed through special-shaped piston ring

Family Applications Before (15)

Application Number Title Priority Date Filing Date
CN201510109868.XA Pending CN104791219A (en) 2014-03-18 2015-03-08 Completely clearance-free structure of piston reciprocating compressor adopting L-shaped end-clearance-free non-metal piston ring
CN201510109924.XA Pending CN104786037A (en) 2014-03-18 2015-03-08 Embedding method for end-gap-free L-shaped nonmetal piston ring and piston and none-clearance structure forming compressor
CN201510109870.7A Pending CN104929900A (en) 2014-03-18 2015-03-08 Method for forming full-clearance-free compressor structure through end-clearance-free V-shaped nonmetal piston ring
CN201510109921.6A Pending CN104763611A (en) 2014-03-18 2015-03-08 Method for forming all-clearance-free compressor structures through non-end-clearance semi-V-shaped nonmetal piston rings
CN201510109923.5A Pending CN104832399A (en) 2014-03-18 2015-03-08 Method for forming fully clearance-free structure compressor by use of end-gap-free L-type non-metallic piston ring
CN201510109867.5A Pending CN104847625A (en) 2014-03-18 2015-03-08 Completely-clearance-free structure with V-shaped end-clearance-free nonmetal piston ring for piston reciprocating compressor
CN201510109922.0A Pending CN104924268A (en) 2014-03-18 2015-03-08 Mounting method adopting end-clearance-free half-V-shaped nonmetal piston ring and full-clearance-free type compressor structure adopting end-clearance-free half-V-shaped nonmetal piston ring
CN201510109866.0A Pending CN104847624A (en) 2014-03-18 2015-03-08 Completely-clearance-free structure with V-shaped end-clearance-free nonmetal piston ring for piston reciprocating compressor
CN201510109869.4A Pending CN104786194A (en) 2014-03-18 2015-03-08 Installation method of end-clearance-free V-shaped non-metal piston ring and completely clearance-free type compressor structure using piston ring
CN201510122732.2A Pending CN104929901A (en) 2014-03-18 2015-03-14 Play-free structure of piston reciprocating compressor employing semi-V piston ring
CN202210119520.9A Pending CN114992090A (en) 2014-03-18 2015-03-14 Structure of L-shaped piston ring with end gap
CN201510122734.1A Pending CN104929903A (en) 2014-03-18 2015-03-14 No-clearance structure of piston reciprocating compressor adopting V-shaped piston ring
CN201510122735.6A Pending CN104929904A (en) 2014-03-18 2015-03-14 Method for forming full-clearance-free piston reciprocating compressor through half-V-shaped piston ring
CN201510122350.XA Pending CN106150972A (en) 2014-03-18 2015-03-14 L-type piston ring is utilized to constitute the method completely without clearance piston reciprocating compressor
CN201510122733.7A Pending CN104929902A (en) 2014-03-18 2015-03-14 Method for forming completely non-clearance piston reciprocating type compressor by utilizing V-shaped piston rings

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CN201510125301.1A Pending CN104929905A (en) 2014-03-18 2015-03-16 Piston reciprocating compressor full-clearance-free structure formed through special-shaped piston ring

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CN104929905A (en) 2015-09-23
CN104791219A (en) 2015-07-22
CN104786194A (en) 2015-07-22
CN104924268A (en) 2015-09-23
CN104929904A (en) 2015-09-23
CN104929901A (en) 2015-09-23
CN114992090A (en) 2022-09-02
CN104847624A (en) 2015-08-19
CN104929906A (en) 2015-09-23
CN104929902A (en) 2015-09-23
CN104929903A (en) 2015-09-23
CN106150972A (en) 2016-11-23
CN104763611A (en) 2015-07-08
CN104832399A (en) 2015-08-12

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