CN101696680B - Reciprocating piston compressor - Google Patents
Reciprocating piston compressor Download PDFInfo
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- CN101696680B CN101696680B CN2009102337201A CN200910233720A CN101696680B CN 101696680 B CN101696680 B CN 101696680B CN 2009102337201 A CN2009102337201 A CN 2009102337201A CN 200910233720 A CN200910233720 A CN 200910233720A CN 101696680 B CN101696680 B CN 101696680B
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- flange
- stuffing box
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- 239000007789 gas Substances 0.000 claims abstract description 149
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 110
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 55
- 238000007789 sealing Methods 0.000 claims abstract description 46
- 239000000945 filler Substances 0.000 claims description 132
- 238000011084 recovery Methods 0.000 claims description 31
- 238000012856 packing Methods 0.000 claims description 25
- 230000010349 pulsation Effects 0.000 claims description 13
- 230000006837 decompression Effects 0.000 claims description 10
- 230000006835 compression Effects 0.000 description 14
- 238000007906 compression Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention relates to a reciprocating piston compressor, comprising a feed gas admission pipeline and a feed gas vent pipeline, a nitrogen admission pipeline, a leakage gas recovering pipeline, a motor and a mainframe, wherein a mainframe body is provided with a crank connected with the motor and at least one connecting rod, and the mainframe body is provided with a mid body, a connecting body and an air cylinder through at least one crosshead sliding rail outside; the connecting body is internally provided with N groups of stuffing and a flange, wherein N is not less than 7 and not more than 12; a piston rod penetrates through the mid body, the flange and the N groups of stuffing and then the two ends of the piston rod are connected with a piston and a crosshead in the air cylinder; a vent end of the feed gas admission pipeline is connected with an admission end of the feed gas vent pipeline, the nitrogen admission pipeline penetrates through a mid body cavity and is communicated with a nitrogen inlet of a nitrogen channel; the leaked gas recovering pipeline penetrates the mid body cavity and is communicated with a nitrogen outlet of a recovering channel; a sealing gas channel is arranged along an axial direction of the flange and a corresponding stuffing box of each group of stuffing between a third group of stuffing or a fourth group of stuffing counted from inside to outside and an outermost group of stuffing; a gas inlet of the channel is arranged on the outer lateral face of the flange, and the air outlet is arranged in the inner side of a corresponding step cavity in the third or the fourth stuffing box; and the sealing gas admission pipeline penetrates through the mid body cavity and is communicated with the gas inlet of the channel. The reciprocating piston compressor has better sealing performance.
Description
Technical field
The present invention relates to a kind of compressor, particularly relate to the reciprocating-piston compressor that a kind of sealability is preferable, can effectively stop unstrpped gas to leak.
Background technique
At present, domestic still do not have rare to compress, valuable, poisonous, the harmful unstrpped gas of suitable device, generally is to utilize air displacement, existing compressor that working pressure is suitable to substitute.
Existing reciprocating-piston compressor, comprise virgin gas admission line and virgin gas exhaust line, the nitrogen admission line, leak the gas recovery line, motor, main frame, on the fuselage of main frame bent axle is housed, the outer end of bent axle links to each other with motor, at least be provided with a connecting rod on the bent axle, fuselage is connected to a crosshead slideway outward at least, and fuselage all is provided with the middle body that links to each other successively by each crosshead slideway, connecting body, cylinder, the crosshead of joining with connecting rod is housed in the crosshead slideway, filler assembly is housed in the connecting body, piston is housed in the cylinder, the N group filler that joins successively inside and outside filler assembly comprises, flange, N is a natural number, and 5≤N≤9, every group of filler is by stuffing box, packing ring is formed, be provided with inboard little in the stuffing box vertically, the step cutting pattern cavity that the outside is big, packing ring is arranged at the outside of step cavity in the stuffing box, flange, that stuffing box of organizing filler of outermost end that reclines with flange has channel of nitrogen vertically, the suction port of channel of nitrogen is positioned on the outer side surface of flange, the air outlet is positioned at the inboard of the stuffing box step cavity of that group filler of outermost end that reclines with flange, flange, the stuffing box of that group filler of the outermost end that reclines with flange, from outer to inner the stuffing box of Shuo second group of filler has the recovery approach that leaks gas vertically, the suction port of recovery approach is positioned at the inboard of the stuffing box step cavity of second group of filler of number from outer to inner, the air outlet is positioned on the outer side surface of flange, piston rod runs through middle body, flange, behind the N group filler, the one end puts in the cylinder and joins with piston, its the other end puts in the crosshead slideway and joins with crosshead, the inlet end of the outlet side of virgin gas admission line and virgin gas exhaust line all joins with cylinder, intracoelomic cavity was communicated with the suction port of channel of nitrogen during the nitrogen admission line passed, and intracoelomic cavity was communicated with the air outlet of recovery approach during leakage gas recovery line was passed.
As seen, filler assembly is sleeved on the piston rod, and the packing ring in the stuffing box of every group of filler cooperates with rod seal; Because of putting in the cylinder, piston rod joins with piston, so with respect to cylinder, filler is that interior, flange is outer position relation, and first group of filler of from-inner-to-outer number be near cylinder, the step cutting pattern cavity near a side of cylinder for inboard, be the outside away from the opposite side of cylinder; For the piston rod in the described compressor; be to utilize the filler assembly that can be complementary to seal with the Maximum operating pressure in the compresser cylinder; and the nitrogen that utilize to inject protected, in case unstrpped gas leaks in the fuselage (being crankcase) of main frame or in the atmosphere.
Connecting body, cylinder and corresponding connecting rod, crosshead, piston rod, the piston of described crosshead slideway, middle body, interior filling material assembly are formed a row compression system, the configuration direction of every row compression system can be vertical direction or substantially horizontal in the compressor, and the orientation of filler assembly is decided by the configuration direction of respective column compression system.In addition, the fixed component of main frame has fuselage, crosshead slideway, middle body, connecting body, cylinder, and the moving element of main frame has bent axle, connecting rod, crosshead, piston rod, piston.
During described compressor operating, be the nitrogen of 0.3～0.6Mpa from the suction port injection pressure of channel of nitrogen only by the nitrogen admission line, nitrogen will stop unstrpped gas to continue to reveal in crankcase along piston rod, part nitrogen enters the inboard of the interior step cavity of stuffing box of second group of filler of number from outer to inner, and mix with a small amount of unstrpped gas that leaks into this place along piston rod, mixed gas by recovery approach, leak the gas recovery line and drawn the unified discharging of compressor or reclaim after treatment.
Though described filler assembly can be brought into play certain gas seal effect; but still have a small amount of unstrpped gas inevitably will be along piston rod to the cylinder external leakage; cause the waste and the atmospheric pollution of this gas first; second along with the pressure of leakage unstrpped gas; variation of temperature; to on piston rod, produce irregular coating; destroyed the precision of piston rod; cause filler assembly to lose efficacy; compressor can only be by forced-stopping machine; this has a strong impact on the economic benefit of applying unit; simultaneously; some unstrpped gas (as nickel carbonyl gas) is leaked and will be caused the work-yard to be decomposed the toxic gas pollution that the back is produced, serious threat operator's personal safety and physical and mental health by this gas or its.
Summary of the invention
The technical problem to be solved in the present invention provides the reciprocating-piston compressor that a kind of sealability is preferable, can effectively stop unstrpped gas to leak.
State technical problem in solving, reciprocating-piston compressor of the present invention comprises virgin gas admission line and virgin gas exhaust line, the nitrogen admission line, leak the gas recovery line, motor, main frame, on the fuselage of main frame bent axle is housed, the outer end of bent axle links to each other with motor, at least be provided with a connecting rod on the bent axle, fuselage is connected to a crosshead slideway outward at least, and fuselage all is provided with the middle body that links to each other successively by each crosshead slideway, connecting body, cylinder, the crosshead of joining with connecting rod is housed in the crosshead slideway, filler assembly is housed in the connecting body, piston is housed in the cylinder, the N group filler that joins successively inside and outside filler assembly comprises, flange, N is a natural number, and 7≤N≤12, every group of filler is by stuffing box, packing ring is formed, be provided with inboard little in the stuffing box vertically, the step cutting pattern cavity that the outside is big, packing ring is arranged at the outside of step cavity in the stuffing box, flange, that stuffing box of organizing filler of outermost end that reclines with flange has channel of nitrogen vertically, the suction port of channel of nitrogen is positioned on the outer side surface of flange, the air outlet is positioned at the inboard of the stuffing box step cavity of that group filler of outermost end that reclines with flange, flange, the stuffing box of that group filler of the outermost end that reclines with flange, from outer to inner the stuffing box of Shuo second group of filler has the recovery approach that leaks gas vertically, the suction port of recovery approach is positioned at the inboard of the stuffing box step cavity of second group of filler of number from outer to inner, the air outlet is positioned on the outer side surface of flange, piston rod runs through middle body, flange, behind the N group filler, the one end puts in the cylinder and joins with piston, its the other end puts in the crosshead slideway and joins with crosshead, the inlet end of the outlet side of virgin gas admission line and virgin gas exhaust line all joins with cylinder, intracoelomic cavity was communicated with the suction port of channel of nitrogen during the nitrogen admission line passed, intracoelomic cavity was communicated with the air outlet of recovery approach during leakage gas recovery line was passed, the corresponding stuffing box of every group of filler between the 3rd group of the from-inner-to-outer number or the 4th group of filler and that group filler of outermost end, flange has sealed gas passageway vertically, the suction port of sealed gas passageway is positioned on the outer side surface of flange, the air outlet is positioned at the inboard of corresponding stuffing box step cavity of the 3rd group or the 4th group filler of from-inner-to-outer number, and intracoelomic cavity was communicated with the suction port of sealed gas passageway during the sealing gas admission line passed.
For can concise description for the purpose of the problem, below reciprocating-piston compressor of the present invention be all abbreviated as this compressor.
During compressor operating, inject the nitrogen of certain pressure from the suction port of channel of nitrogen by the nitrogen admission line, nitrogen will enter the inboard (being the inboard that nitrogen will enter step cavity in the stuffing box of first group of filler of number from outer to inner) of step cavity in the stuffing box of that group filler of the outermost end that reclines with flange, and small amount of nitrogen can leak into from outer to inner the inboard of step cavity in the stuffing box of second group of filler of number along piston rod, meanwhile, by the suction port injection sealing gas of sealing gas admission line from sealed gas passageway, sealing gas is not for to influence the performance of unstrpped gas in the compresser cylinder and the gas of quality, and the suction pressure of sealing gas will exceed 5～10% than the working pressure of unstrpped gas in the compresser cylinder.Sealing gas enters the inboard of respective step cavity in the stuffing box of the 3rd group or the 4th group filler of from-inner-to-outer number, the unstrpped gas that leaks into step cavity inboard in the stuffing box of second group of filler of from-inner-to-outer number along piston rod in the cylinder is withstood, stop unstrpped gas to continue to leak, and allow sealing gas to enter cylinder along piston rod.In addition, the 3rd group of the from-inner-to-outer number or the 4th group of filler and from outer to inner each the group filler between second group of filler of number all be to be used for stoping sealing gas to leak along piston rod, a small amount of blanket gas is known from experience the inboard that leaks into step cavity in the stuffing box of second group of filler of number from outer to inner along piston rod, and mix with the nitrogen that leaks into this herein, mixed gas is drawn the unified discharging of compressor by recovery approach, leakage gas recovery line or is reclaimed after treatment.
After adopting above structure, filler assembly is sleeved on the piston rod, packing ring in the N group filler in the stuffing box of every group of filler cooperates with rod seal, filler assembly can be brought into play stronger gas seal effect, effectively stoped the leakage of unstrpped gas along piston rod, therefore, the sealability of this compressor is preferable.
Described main frame, motor are arranged on the underframe, the sealing gas reservoir vessel that is connected with the sealing gas admission line also is set on the underframe, sealing gas is not for to influence the performance of unstrpped gas in the compresser cylinder and the gas of quality, and the pressure of sealing gas will exceed 5～10% than the working pressure of unstrpped gas in the compresser cylinder; The suction port of the suction port of described channel of nitrogen, the air outlet of recovery approach, sealed gas passageway is triangularly arranged.
Described N group filler is stacked gradually and is formed by one group of decompression filler, one～two group of two way sealed master filler, one group of decompression filler, two～six groups of one-way sealing master fillers, two groups of pulsation stuffing box packing from-inner-to-outers.
Description of drawings
Fig. 1 is a plan view of the present invention;
Fig. 2 is the plan view of Fig. 1;
Fig. 3 is that the F of Fig. 2 is to view;
Fig. 4 is the structural representation of main frame among the present invention;
Fig. 5 is the H-H revolved sectional view of Fig. 4;
Fig. 6 is the worm's eye view of filler assembly among the present invention;
Fig. 7 is the I-I revolved sectional view of Fig. 6;
Fig. 8 is the J-J revolved sectional view of Fig. 6;
Fig. 9 is the fundamental diagram of filler assembly among the present invention.
Embodiment
The present invention is further detailed explanation below by mode of execution and accompanying drawing thereof:
Referring to Fig. 1-Fig. 9:
This compressor comprises virgin gas admission line A, virgin gas exhaust line B, sealing gas admission line C, nitrogen admission line D, leaks gas recovery line E, motor 73, main frame 7.
By two roller bearings bent axle 72 (not marking the piece number of described roller bearing in the accompanying drawing) is housed on the fuselage 71 of main frame 7, the outer end of bent axle 72 (being drive end) is by axle coaxial link to each other of coupling 721 with motor 73, two inclined-planes that are mutually an angle of 90 degrees of fuselage 71 upsides are provided with by arranging and two identical row compression systeies of structure before and after an angle of 90 degrees configuration mode, every row compression system comprises crosshead slideway 75, middle body 76, connecting body 77 (interior filling material assembly), cylinder 78 and corresponding connecting rod 74, crosshead 751, piston rod G, piston 781, two cylinders 78 are that cylinder diameter is identical, the single-acting cylinder that intake and exhaust pressure is identical, the bottom of cylinder 78 is a counter balance pocket 782, top is active chamber 783, counter balance pocket 782 has suction port, relief opening, active chamber 783 also has suction port, relief opening (does not mark described two suction ports in the accompanying drawing, the piece number of two relief openings), the relief opening of counter balance pocket 782, be connected to pipeline K between the suction port of active chamber 783.Like this, bent axle 72 is provided with two connecting rods 74, fuselage 71 is circumscribed with two crosshead slideways 75, and fuselage 71 all is provided with middle body 76, connecting body 77, the cylinder 78 (piece number of corresponding part is omitted in the accompanying drawings in that row compression system of rear side) that links to each other successively by each crosshead slideway 75.
Virgin gas admission line A comprises pipeline A1, A2, the A3 that is communicated with successively, virgin gas exhaust line B comprises pipeline B1, B2, the B3 that is communicated with successively, sealing gas admission line C comprises pipeline C1, the C2 that is communicated with successively, nitrogen admission line D comprises pipeline D1, the D2 that is communicated with successively, leaks gas recovery line E and comprises pipeline E1, the E2 that is communicated with successively.Pipeline A2, B2 are the common conduit in the two row compression system respective lines.
The concrete Placement of corresponding part and working principle specifically describe as follows in that row compression system of front side:
The crank pin of bent axle 72 is provided with connecting rod 74 (not marking the piece number of described crank pin in the accompanying drawing), fuselage 71 outer upsides are connected to crosshead slideway 75, and fuselage 71 is provided with middle body 76, connecting body 77, the cylinder 78 that tilts to link to each other successively from bottom to top by crosshead slideway 75, the crosshead 751 that the downside and connecting rod 74 the other ends join is housed in the crosshead slideway 75, be equipped with in the connecting body 77 and be used for the filler assembly of packed-piston bar G, to stop the unstrpped gas in the cylinder 78 to leak, piston 781 is housed in the cylinder 78 along piston rod G.
Filler assembly comprises 12 groups of fillers 3, flange 1, and they are by positioning and fixing successively inside and outside two stud bolts 2 and the corresponding fasteners.
Described 12 groups of fillers 3 are stacked gradually and are formed by one group of decompression filler 31, two groups of two way sealed master fillers 32, one group of decompression filler 33, six groups of one-way sealing master fillers 34, two groups of pulsation stuffing box packing 35 from-inner-to-outers.Every group of filler formed by stuffing box, packing ring, is provided with the step cutting pattern cavity that the inboard is little, the outside is big in the stuffing box vertically, and packing ring is arranged at the outside (not marking the piece number of described step cavity, packing ring in the accompanying drawing) of step cavity in the stuffing box.The concrete filler of respective sets number is the prior art part in described 12 groups of fillers 3, and equal buyable.
The stuffing box 351 of the stuffing box 351 of flange 1, that group pulsation stuffing box packing 35 of outermost end of reclining with flange 1 (i.e. the stuffing box of that group filler of outermost end that reclines with flange 1), second group of pulsation stuffing box packing 35 of number from outer to inner (promptly from outer to inner the stuffing box of second group of filler of number) has the recovery approach 4 that leaks gas vertically, and inboard, air outlet 12 that the suction port of recovery approach 4 is positioned at described second group of stuffing box 351 (promptly from outer to inner the stuffing box of second group of filler of number) step cavity are positioned on the outer side surface of flange 1.
The stuffing box 351 of flange 1, that group pulsation stuffing box packing 35 of outermost end of reclining with flange 1 (i.e. the stuffing box of that group filler of outermost end that reclines with flange 1) has channel of nitrogen 6 vertically, the inboard of the suction port 13 of channel of nitrogen 6 is positioned on the outer side surface of flange 1, the air outlet is positioned at described stuffing box 351 (i.e. the stuffing box of that group filler of outermost end that reclines with flange 1) step cavity.
The stuffing box 351 of 341,2 groups of pulsation of stuffing box stuffing box packing 35 of the stuffing box 331 of decompression filler 33, six groups of one-way sealing master fillers 34 (be the from-inner-to-outer number the 4th group of filler and outermost end that organize the corresponding stuffing box of every group of filler between filler), flange 1 has sealed gas passageway 5 vertically, the inboard that the suction port 11 of sealed gas passageway 5 is positioned on the outer side surface of flange 1, the air outlet is positioned at described stuffing box 331 (being the stuffing box of the 4th group of filler of from-inner-to-outer number) step cavity.
The suction port 11 of the suction port 13 of channel of nitrogen 6, the air outlet 12 of recovery approach 4, sealed gas passageway 5 is triangularly arranged.
After piston rod G ran through middle body 76,1,12 groups of fillers 3 of flange, its upper end puts in the cylinder 78 and piston 781 joins, its lower end puts in the crosshead slideway 75 and the upsides of crosshead 751 join.Like this, filler assembly is sleeved on the piston rod G, and packing ring and piston rod G in 12 groups of fillers 3 in the stuffing box of every group of filler are sealed and matched, the close cylinder 78 of decompression filler 31 (being first group of filler of from-inner-to-outer number).Because of the configuration direction of two row compression systeies in this compressor is a true dip direction, so the orientation of two filler assembly user modes is a true dip direction.
The outlet side of virgin gas admission line A (being pipeline A3 opening end) is communicated with the suction port of counter balance pocket 782, the inlet end of virgin gas exhaust line B (being pipeline B1 opening end) is communicated with the relief opening of active chamber 783, and unstrpped gas enters active chamber 783 through virgin gas admission line A, counter balance pocket 782, pipeline K.During piercing into, pipeline C2 among the sealing gas admission line C is communicated with the suction port 11 of sealed gas passageway 5 in the inner chamber of body 76, during piercing into, pipeline D2 among the nitrogen admission line D is communicated with the suction port 13 of channel of nitrogen 6 in the inner chamber of body 76, during piercing into, pipeline E1 among the leakage gas recovery line E is communicated with the air outlet 12 of recovery approach 4 in the inner chamber of body 76, for the purpose of energy concise description problem, the related pipe body that is in separately in middle body 76 inner chambers for pipeline C2, pipeline D2, pipeline E1 is omitted.
The self structure of fuselage 71, bent axle 72, connecting rod 74, crosshead slideway 75, crosshead 751, connecting body 77, cylinder 78, piston rod G, piston 781 is same as the prior art, and the mutual Placement of fuselage 71, bent axle 72, connecting rod 74, crosshead slideway 75, crosshead 751, middle body 76, connecting body 77, cylinder 78, piston rod G, piston 781 is same as the prior art.
Bent axle 72 is by crank pin drive link 74 and crosshead 751 on it, rotatablely moving of motor 73 become the linear reciprocating motion of crosshead 751 in crosshead slideway 75, driving piston 781 by piston rod G again does reciprocating linear motion in cylinder 78, thereby impel the swept volume in the cylinder 78 ascending, descending again, the variation that goes round and begins again allows this compressor is continuously realized expanding, the function of air-breathing, compression, exhaust.
During this compressor operating, the nitrogen of certain pressure injects in the filler assembly from the suction port 13 of channel of nitrogen 6 by nitrogen admission line D among the nitrogen storage container Q2, nitrogen will enter from outer to inner the inboard of the interior step cavity of stuffing box 351 (i.e. the stuffing box of that group filler of outermost end that reclines with flange 1) of first group of pulsation stuffing box packing 35 of number, and small amount of nitrogen can leak into the inboard of the interior step cavity of stuffing box 351 (i.e. the stuffing box of second group of filler from outer to inner counting) of second group of pulsation stuffing box packing 35 of number from outer to inner along piston rod G, meanwhile, the sealing gas of certain pressure injects in the filler assembly from the suction port 11 of sealed gas passageway 5 by sealing gas admission line C among the sealing gas reservoir vessel Q3, and the suction pressure of sealing gas will exceed 5～10% than the working pressure of unstrpped gas in the compresser cylinder 78.Sealing gas enters the inboard of the interior step cavity of stuffing box 331 (being the stuffing box of the 4th group of filler of from-inner-to-outer number) of decompression filler 33, the unstrpped gas that leaks into stuffing box 321 (being the stuffing box of second group of filler of from-inner-to-outer number) the interior step cavity inboard of first group of two way sealed master filler 32 of from-inner-to-outer number along piston rod G in the cylinder 78 is withstood, stop unstrpped gas to continue to leak (unstrpped gas that is about to leak along piston rod G in the cylinder 78 stoped before described stuffing box 321), and allow sealing gas to enter cylinder 78 along piston rod G.In addition, decompression filler 33, six groups of one-way sealing master fillers 34, each group filler between the stuffing box packing 35 of second group of number pulsation from outer to inner (be the 4th group of filler of from-inner-to-outer number with second group of filler of number from outer to inner between each organize filler) all be to be used for stoping sealing gas to leak along piston rod G, a small amount of blanket gas is known from experience the inboard that leaks into the interior step cavity of stuffing box 351 (i.e. the stuffing box of second group of filler from outer to inner counting) of second group of pulsation stuffing box packing 35 of number from outer to inner along piston rod G, and mix with the nitrogen that leaks into this herein, mixed gas is by recovery approach 4, air outlet 12, leakage gas recovery line E is drawn the compressor unification and is discharged among the leakage gas reservoir vessel Q1.
As seen, entering from outer to inner, the effect of the nitrogen of the stuffing box 351 interior step cavity inboards of first group of pulsation stuffing box packing 35 of number is: the inboard that above-mentioned a small amount of sealing gas is stoped step cavity in the stuffing box 351 of second group of pulsation stuffing box packing 35 of number from outer to inner.
Concrete Placement and working principle in that row compression system of rear side between the corresponding part repeat no more.
After adopting above structure, filler assembly can be brought into play stronger gas seal effect, has effectively stoped the leakage of unstrpped gas along piston rod G, and therefore, the sealability of this compressor is preferable.
Above-described only is one embodiment of the present invention.Should be pointed out that for the person of ordinary skill of the art outside the prerequisite that does not break away from the principle of the invention, can also make some modification and improvement, these also should be considered as belonging to protection scope of the present invention.Such as:
Guaranteeing that N is a natural number, and outside the precondition of 7≤N≤12, some groups of fillers also can be counted the filler from-inner-to-outer by the different respective sets of form and stack gradually and form.
Usually, when the virgin gas Maximum operating pressure in the compresser cylinder was between 10～21Mpa, two way sealed master's filler 32 adopted two groups, and one-way sealing master filler 34 adopts six groups, and it is constant that remaining respective sets is counted filler; When the virgin gas Maximum operating pressure in the compresser cylinder was lower than 10Mpa, two way sealed master's filler 32 adopted one group, and one-way sealing master filler 34 adopts two～five groups, and it is constant that remaining respective sets is counted filler.
Also can be provided with row or the above compression system of two row on the fuselage of main frame; Virgin gas admission line, virgin gas exhaust line, nitrogen admission line, sealing gas admission line also can be controlled by gas control cabinet and interior corresponding control valve thereof.
In addition, corresponding stuffing box, the flange of every group of filler between that group filler of the 3rd group of filler of from-inner-to-outer number and outermost end also can have sealed gas passageway vertically, the inboard that the suction port of sealed gas passageway is positioned on the outer side surface of flange, the air outlet is positioned at described the 3rd group of stuffing box step cavity.
Moreover, the orientation of filler assembly user mode also can change along with the configuration direction of respective column compression system in the compressor, such as: the configuration direction of respective column compression system is a substantially horizontal in the compressor, and then the orientation of filler assembly user mode also becomes substantially horizontal thereupon.
Claims (3)
1. reciprocating-piston compressor, comprise virgin gas admission line and virgin gas exhaust line, the nitrogen admission line, leak the gas recovery line, motor, main frame, on the fuselage of main frame bent axle is housed, the outer end of bent axle links to each other with motor, at least be provided with a connecting rod on the bent axle, fuselage is connected to a crosshead slideway outward at least, and fuselage all is provided with the middle body that links to each other successively by each crosshead slideway, connecting body, cylinder, the crosshead of joining with connecting rod is housed in the crosshead slideway, filler assembly is housed in the connecting body, piston is housed in the cylinder, the N group filler that joins successively inside and outside filler assembly comprises, flange, N is a natural number, and 7≤N≤12, every group of filler is by stuffing box, packing ring is formed, be provided with inboard little in the stuffing box vertically, the step cutting pattern cavity that the outside is big, packing ring is arranged at the outside of step cavity in the stuffing box, set N group filler, step cavity in each stuffing box, in flange near a side of cylinder is, set N group filler, step cavity in each stuffing box, outside flange away from a side of cylinder is, flange, that stuffing box of organizing filler of outermost end that reclines with flange has channel of nitrogen vertically, the suction port of channel of nitrogen is positioned on the outer side surface of flange, the air outlet is positioned at the inboard of the stuffing box step cavity of that group filler of outermost end that reclines with flange, flange, the stuffing box of that group filler of the outermost end that reclines with flange, from outer to inner the stuffing box of Shuo second group of filler has the recovery approach that leaks gas vertically, the suction port of recovery approach is positioned at the inboard of the stuffing box step cavity of second group of filler of number from outer to inner, the air outlet is positioned on the outer side surface of flange, piston rod runs through middle body, flange, behind the N group filler, the one end puts in the cylinder and joins with piston, its the other end puts in the crosshead slideway and joins with crosshead, the inlet end of the outlet side of virgin gas admission line and virgin gas exhaust line all joins with cylinder, intracoelomic cavity was communicated with the suction port of channel of nitrogen during the nitrogen admission line passed, intracoelomic cavity was communicated with the air outlet of recovery approach during leakage gas recovery line was passed, it is characterized in that: the corresponding stuffing box of every group of filler between the 3rd group of the from-inner-to-outer number or the 4th group of filler and that group filler of outermost end, flange has sealed gas passageway vertically, the suction port of sealed gas passageway is positioned on the outer side surface of flange, the air outlet is positioned at the inboard of corresponding stuffing box step cavity of the 3rd group or the 4th group filler of from-inner-to-outer number, and intracoelomic cavity was communicated with the suction port of sealed gas passageway during the sealing gas admission line passed.
2. reciprocating-piston compressor according to claim 1, it is characterized in that: described main frame, motor are arranged on the underframe, the sealing gas reservoir vessel that is connected with the sealing gas admission line also is set on the underframe, sealing gas is not for to influence the performance of unstrpped gas in the compresser cylinder and the gas of quality, and the pressure of sealing gas will exceed 5～10% than the working pressure of unstrpped gas in the compresser cylinder; The suction port of the suction port of described channel of nitrogen, the air outlet of recovery approach, sealed gas passageway is triangularly arranged.
3. reciprocating-piston compressor according to claim 1 and 2 is characterized in that: described N group filler is stacked gradually and is formed by one group of decompression filler, one～two group of two way sealed master filler, one group of decompression filler, two～six groups of one-way sealing master fillers, two groups of pulsation stuffing box packing from-inner-to-outers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102337201A CN101696680B (en) | 2009-10-23 | 2009-10-23 | Reciprocating piston compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102337201A CN101696680B (en) | 2009-10-23 | 2009-10-23 | Reciprocating piston compressor |
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| Publication Number | Publication Date |
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| CN101696680A CN101696680A (en) | 2010-04-21 |
| CN101696680B true CN101696680B (en) | 2011-11-23 |
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| CN2009102337201A Expired - Fee Related CN101696680B (en) | 2009-10-23 | 2009-10-23 | Reciprocating piston compressor |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806472A (en) * | 2014-01-24 | 2015-07-29 | 上海华林工业气体有限公司 | Horizontal CO compressor filler midbody discharge device |
| CN104454450A (en) * | 2014-11-26 | 2015-03-25 | 柳州凯通机械有限公司 | Packing device of chloroethylene gas compressor |
| CN104454449A (en) * | 2014-11-26 | 2015-03-25 | 柳州凯通机械有限公司 | Chloroethylene gas compressor |
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|---|---|---|---|---|
| CN201043606Y (en) * | 2007-04-24 | 2008-04-02 | 神华煤制油研究中心有限公司 | Packing seal structure for high-pressure gas |
| CN201074579Y (en) * | 2007-08-14 | 2008-06-18 | 南京压缩机股份有限公司 | Seal structure for piston type compressor |
| CN201165959Y (en) * | 2007-08-28 | 2008-12-17 | 柳州柳二空机械股份有限公司 | Reciprocating compressor stuffing components with cooling oil ways |
| CN201526429U (en) * | 2009-10-23 | 2010-07-14 | 王万军 | Reciprocating piston compressor |
-
2009
- 2009-10-23 CN CN2009102337201A patent/CN101696680B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201043606Y (en) * | 2007-04-24 | 2008-04-02 | 神华煤制油研究中心有限公司 | Packing seal structure for high-pressure gas |
| CN201074579Y (en) * | 2007-08-14 | 2008-06-18 | 南京压缩机股份有限公司 | Seal structure for piston type compressor |
| CN201165959Y (en) * | 2007-08-28 | 2008-12-17 | 柳州柳二空机械股份有限公司 | Reciprocating compressor stuffing components with cooling oil ways |
| CN201526429U (en) * | 2009-10-23 | 2010-07-14 | 王万军 | Reciprocating piston compressor |
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| CN101696680A (en) | 2010-04-21 |
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