CN104214071B - Reciprocating plunger type gas compressor and method - Google Patents
Reciprocating plunger type gas compressor and method Download PDFInfo
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- CN104214071B CN104214071B CN201410454848.1A CN201410454848A CN104214071B CN 104214071 B CN104214071 B CN 104214071B CN 201410454848 A CN201410454848 A CN 201410454848A CN 104214071 B CN104214071 B CN 104214071B
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000003921 oil Substances 0.000 claims abstract description 229
- 238000007906 compression Methods 0.000 claims abstract description 26
- 230000006835 compression Effects 0.000 claims abstract description 23
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims description 15
- 230000033001 locomotion Effects 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 12
- 239000010727 cylinder oil Substances 0.000 claims description 11
- 238000005183 dynamical system Methods 0.000 claims description 10
- 230000000740 bleeding effect Effects 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000013022 venting Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 claims description 2
- 238000004781 supercooling Methods 0.000 claims 2
- 239000007788 liquid Substances 0.000 abstract description 4
- 230000003247 decreasing effect Effects 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 55
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- 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
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F04B27/12—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders having plural sets of cylinders or pistons
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
The invention relates to a compressor and a method, in particular to a reciprocating plunger type gas compressor and a method, which belong to the field of gas compression. The compressor which converts driving energy into hydraulic energy uses hydraulic oil to push a hydraulic piston, so that a plunger is driven to move up and down to compress gas, meanwhile, an air cylinder structure, the upper end and lower end of which are symmetric, is adopted, medium enters one air cylinder when compressed by another air cylinder, and consequently, not only is the energy of the sucked gas not wasted, but also the efficiency is high and energy is saved. The reciprocating plunger type gas compressor is particularly suitable for compressing medium-pressure and high-pressure gas or liquid with high suction pressure, moreover, because two-stage or multi-stage compression is adopted, the pressure of an oil pump can be decreased, the temperature of compressed medium can be decreased, and meanwhile, since hydraulic driving is adopted, noise is reduced effectively.
Description
Technical field
The present invention relates to a kind of compressor and method, belong to gas compression field and in particular to a kind of reciprocating plunger type gas
Gas compressor and method.
Background technology
At present, compressor of the prior art includes hydraulic compressor and the compression of toggle gas piston.
Toggle piston gas compressor, its manufacturing technology is ripe, and application is wider.But its amount of parts
Many, volume weight is all larger with floor space, consumable accessory is more, required motor power is big under identical operating mode, and operating cost is high；With
When, its suction and discharge scope is big compared with narrow, compression noise.Additionally, for the pressure of inspiration(Pi) adapting to its regulation, often needing gases at high pressure
It is compressed after step-down, waste the energy of compressed media again.
Hydraulic compressor piston is mainly I shape piston, and piston is contacted with cylinder barrel, by the sealing between piston and cylinder barrel
Circle sealing, so requirement to cylinder barrel is very high, it is necessary to assure cylinder barrel roughness and linearity；And, in long-term operation
Cheng Dangzhong, once impurity in cylinder will scratch cylinder barrel and sealing ring, leak air phenomenon at once；Further, since cylinder barrel
Difficulty of processing is big, and optional limited material, and hydraulic compressor is very high to requirements for gas quality, compressed gas limitednumber.
Content of the invention
The manufacturing cost that the present invention is mainly existing for solution prior art is big compared with high, compression noise, and operating power consumption is high
Problem, there is provided a kind of reciprocating plunger type gas compressor and method, this reciprocating plunger type gas compressor and method are neither unrestrained
Take the energy sucking gas itself and energy-efficient, noise is effectively reduced using hydraulic-driven simultaneously.
Further object of the present invention is limited by the running environment solving existing for prior art, and gas medium requires higher
Problem, there is provided a kind of reciprocating plunger type gas compressor and method, this reciprocating plunger type gas compressor and method adopt post
Plug piston, goes for various operating modes, and the requirement to compressed media is relatively low.
The above-mentioned technical problem of the present invention is mainly addressed by following technical proposals：
A kind of reciprocating plunger type gas compressor, including：Host computer system, the control system being connected with host computer system and cooling
System, the dynamical system being connected with control system, described host computer system includes：Main frame cylinder, described main frame cylinder includes：Plunger,
One cylinder, oil cylinder, wherein：
One end of described first cylinder is connected with oil cylinder, and the other end is provided with the first cylinder contiguous block, and described plunger passes through oil
Enter in cylinder after cylinder, and form seal cavity A with described first cylinder contiguous block；
Described plunger be located at in-oil cylinder partly on be provided with oil cylinder piston, described oil cylinder is divided into by described oil cylinder piston
The oil pocket B and oil pocket C of lower two sealings；
First intake valve, first row air valve are provided with described seal cavity A, described oil pocket B and oil pocket C is respectively provided with
There is oil cylinder oil inlet mouth；
Described first intake valve is connected with the inlet end of compressor by control system；
Described oil pocket B is connected with control system respectively with the oil cylinder oil inlet mouth on oil pocket C；
Described first row air valve is connected with the exhaust end of compressor by cooling system.
Optimize, a kind of above-mentioned reciprocating plunger type gas compressor, also include the second cylinder, described second cylinder and the
What one cylinder was symmetrical is connected to the other end of oil cylinder, and described plunger is after one end of the second cylinder enters described second cylinder with the
On the two cylinder other ends second cylinder contiguous block formed seal cavity D, described seal cavity D is provided with the second intake valve and
Second row air valve, described second intake valve is connected with the inlet end of compressor by control system, and described second row air valve passes through
Cooling system is connected with the exhaust end of compressor.
Optimize, a kind of above-mentioned reciprocating plunger type gas compressor, described host computer system has more than one, formed multistage
Compressibility, wherein：
The oil cylinder oil inlet mouth of each host computer system described is connected with control system respectively；
First intake valve of the host computer systems at different levels in described host computer system, the second intake valve and upper level host computer system
First row air valve and second row air valve communicate；
First intake valve of first order host computer system, the second intake valve pass through the inlet end phase of control system and compressor
Logical；
The first row air valve of afterbody host computer system and second row air valve are connected with the exhaust end of compressor respectively.
Optimize, a kind of above-mentioned reciprocating plunger type gas compressor, described control system includes the first ball valve, commutation
Valve, wherein：Described one end of first ball valve is connected with the inlet end of compressor, the other end and the first intake valve and the second intake valve
Connect, one end of described reversal valve is connected with the oil cylinder oil inlet mouth on oil pocket B and oil pocket C respectively, the other end and dynamical system phase
Even.
Optimize, a kind of above-mentioned reciprocating plunger type gas compressor, described cooling system includes：Cooler, oil cooler,
One end of described cooler is connected with first row air valve and second row air valve, and the other end is connected with the exhaust end of compressor；Described
One end of oil cooler is connected with reversal valve, and the other end is connected with the oil sump in dynamical system.
Optimize, a kind of above-mentioned reciprocating plunger type gas compressor, described dynamical system includes：Oil cooler, accumulator,
Filter, oil pump, overflow valve and oil sump, wherein：After described oil pump and overflow valve are parallel with one another respectively with oil sump and filter
One end is connected, and the other end of described filter is connected with accumulator and reversal valve connects, and described reversal valve is connected with filter
One end be also connected with oil sump.
Optimize, a kind of above-mentioned reciprocating plunger type gas compressor, also include process system, described process system bag
Include：Safety valve, the second ball valve, check valve, described safety valve is connected with cooling system, one end of described second ball valve and cooling system
System is connected, and the other end is connected with compressor air-discharging end by check valve.
A kind of method carrying out gas compression using any one above-mentioned reciprocating plunger type gas compressor, including：
Oiling step：By control system to one of oil pocket B or oil pocket C oiling, thus push oil cylinder piston movement makes
Obtain one of seal cavity A or seal cavity D to be compressed；
Air inlet step：By in ambient atmos suction seal cavity A or seal cavity D；
Steps of exhausting：When the gas pressure in the seal cavity compressed reaches desirable pressure, gas is discharged；
Switch step：Control system is swung to, the oiling in another oil pocket, thus promoting oil cylinder piston counter motion, holds
Traveling jia bombardier is rapid.
Optimize, the method for above-mentioned gas compression, described oiling step is：Hydraulic oil through oil pump, by oil sump successively
Enter one of straight-through entrance oil pocket B or oil pocket C of filter and reversal valve, promote cylinder piston motion, meanwhile, another
The oil of oil pocket then through the straight-through of reversal valve and oil cooler, returns to oil sump；
Described air inlet step is：Oil cylinder piston drives plunger motion so that un-compressed seal cavity volume increases, and opens
Open the intake valve of this cavity, gas, through the first ball valve, enters un-compressed sealing from the first intake valve or the second intake valve
Cavity；
Described steps of exhausting is：Cylinder piston motion drives plunger motion, the seal cavity smaller volume being compressed, gas
Pressure increases, and its intake valve is closed, when the gas pressure in the seal cavity compressed reaches the pressure of required compression, its
Air bleeding valve is opened, and gas is discharged through subcooler, second exhaust ball valve and check valve；
Described switch step is：When plunger motion is to top, reversal valve commutation is in and intersects the state communicating, and pressure oil will
Flow to previously not by the oil pocket of oiling, previously oil sump is returned to by the oil in the oil pocket of oiling, oil cylinder piston is in pressure oil simultaneously
The lower counter motion of effect, then executes air inlet step.
Therefore, the invention has the advantages that：
1st, more energy-conserving and environment-protective：Suck and exhaust pressure is wider, do not waste and suck the energy of gas itself and energy-efficient, especially
It is applied to the higher mesohigh gas of pressure of inspiration(Pi) or liquid compression, and it can be deployed in two-stage or multi-stage compression, oil can be reduced
The pressure of pump, the temperature of reduction compressed media, effectively reduce noise using hydraulic-driven simultaneously.
2nd, effective reduces cost：Due to adopting hydraulic-driven, therefore low cost of manufacture, operating cost is low.
3rd, can adapt to more multi-state：Using plunger type piston, go for various operating modes, relatively low to medium requirements,
Existing hydraulic piston engine can not meet this requirement, the shale gas of such as domestic present exploitation, coal bed gas etc..
4th, it is easy to later maintenance：Mix input supercharging because the unit is directed to various gas-liquid media, in therefore increasing, body is convenient
Later stage detachable maintaining.
5th, air-tightness is more preferable：Cylinder and oil cylinder are each located in single cylinder, and middle also have middle body to keep apart, even if therefore
Seal is damaged, and gas also will not infiltrate into hydraulic oil.
Brief description
Fig. 1 is the structure chart of the embodiment of the present invention 1.
Fig. 2 is the structure chart of the main frame cylinder of the embodiment of the present invention 1.
Fig. 3 is the structure chart of the embodiment of the present invention 2.
Specific embodiment
Below by embodiment, and combine accompanying drawing, technical scheme is described in further detail.In figure,
First ball valve 1, the first intake valve 2, the second intake valve 3, first row air valve 4, second row air valve 5, main frame cylinder 6, reversal valve 8, cold
But device 9, safety valve 10, the second ball valve 11, check valve 12, oil cooler 13, accumulator 14, filter 15, oil pump 16, overflow valve
17, oil sump 18, the first cylinder contiguous block 21, plunger 22, cylinder 23, cylinder barrel flange 24, cylinder intermediate mass 25, oil cylinder intermediate mass
26, oil cylinder piston sealing ring 27, oil cylinder piston 28, oil cylinder 29, long draw 30, short rod 31, the second cylinder contiguous block 32, venting
Hole 33, cylinder seal 34, cylinder seal 35, oil cylinder oil inlet mouth 36, the second cylinder 37.
Embodiment 1：
Referring to Fig. 1, a kind of reciprocating plunger type gas compressor, including：Host computer system, the control system being connected with host computer system
The dynamical system unite with cooling system, being connected with control system.
Host computer system includes main frame cylinder 6.As shown in Fig. 2 main frame cylinder 6 includes：Plunger 22, the first cylinder 23, the second cylinder
37th, oil cylinder 29, wherein：One end of first cylinder 23 is connected with oil cylinder 29, and the other end is provided with the first cylinder contiguous block 21, plunger 22
Enter in cylinder 23 through after oil cylinder 29, and form seal cavity A with the first cylinder contiguous block 21；Seal cavity A relative two
Side is respectively arranged with the first intake valve 2, first row air valve 4；What the second cylinder 37 was symmetrical with the first cylinder 23 is connected to oil cylinder 29
The other end, plunger 22 from one end of the second cylinder 37 enter the second cylinder 37 after with the second cylinder 37 other end the second gas
Cylinder contiguous block 32 forms seal cavity D；Second intake valve 3 and second exhaust are respectively arranged with the relative both sides of seal cavity D
Valve 5；First intake valve 2, the second intake valve 3 are connected with the inlet end of compressor by control system；First row air valve 4, second
Air bleeding valve 5 is connected with the exhaust end of compressor by cooling system；Plunger 22 be located at oil cylinder 29 in partly on be provided with oil cylinder
Piston 28, is provided with oil cylinder piston sealing ring 27, and oil cylinder 29 is divided into the oil pocket B of upper and lower two sealings by this oil cylinder piston 28
With oil pocket C；Oil pocket B with the oil cylinder oil inlet mouth 36 being connected with control system is respectively arranged with oil pocket C；In the first cylinder 23 and oil
It is provided with cylinder intermediate mass 25 and oil cylinder intermediate mass at the connecting portion of cylinder 29 connecting portion and the second cylinder 37 and oil cylinder 29
26, this cylinder intermediate mass 25 and oil cylinder intermediate mass 26 are fixed on the first cylinder 23 and the cylinder of the second cylinder 37 by long draw 30
On flange 24, in the cylinder between be provided with cylinder seal 34 on block 25, described oil cylinder intermediate mass 26 is provided with cylinder seal 35；Logical
Cross cylinder intermediate mass 25, oil cylinder 29 and cylinder are kept apart by oil cylinder intermediate mass 26, even if therefore seal is damaged, gas also will not
Infiltrate into hydraulic oil.
Dynamical system includes accumulator 14, filter 15, oil pump 16, overflow valve 17 and oil sump 18 and forms, oil pump 16 with overflow
After stream valve 17 parallel connection, one end is connected with oil sump 18, and the other end is connected with filter 15, the other end of filter 15 and accumulator 14
And the reversal valve 8 of control system connects.
Cooling system includes cooler 9 and oil cooler 13, the inlet end of cooler 9 and first row air valve 4, second row air valve
5 are connected, and outlet side is connected with the safety valve 10 of process system and the second ball valve 11, and oil cooler 13 one end connects reversal valve 8, another
End connects oil sump 18.
Process gas system includes safety valve 10, the second ball valve 11, check valve 12 and pipeline composition, safety valve 10 and the second ball
One end of valve 11 is connected with the cooler 9 of cooling system, and the other end is connected with compressor air-discharging end by check valve 12.
Control system includes the first ball valve 1, the first intake valve 2, the second intake valve 3, first row air valve 4, second row air valve 5
With reversal valve 8, the inlet end of the first ball valve 1 one termination compressor, other end is same with the first intake valve 2 and the second intake valve 3
When connect；First row air valve 4 and second row air valve 5 are connected with cooler 9 more simultaneously, the B of one end of reversal valve 8 and main frame cylinder 6
The oil cylinder oil inlet mouth 36 in chamber and C chamber connects, and the other end is connected with filter 15 and oil cooler 13 respectively；
Plunger 22, oil cylinder piston 28 forms tetra- chambeies of A, B, C, D after main frame cylinder 6 installation, and wherein, A, D are air cavity, B, C
For oil pocket.Hydraulic oil, through oil pump 16, sequentially enters state in filter 15 and straight-through Fig. 1 of reversal valve 8 by oil sump 18 and enters B
Chamber, promotes oil cylinder piston 28 to move downward, meanwhile, oil then state and the oil cooler 13 in straight-through Fig. 1 of reversal valve 8 in C chamber,
Return to oil sump 18.During oil cylinder piston 28 moves downward, A chamber volume can increase, and cavity pressure reduces, the first intake valve
2 unlatchings, gas, through the first ball valve 1, enters A chamber from the first intake valve 2, produces the intake process in A chamber.Meanwhile, D chamber volume contracting
Little, gas pressure increases, and the second intake valve 3 cuts out, and produces the compression process in D chamber, when the pressure in D chamber reaches second row air valve
When 5 pressure that can bear are the pressure of required compression, second row air valve 5 is opened, and gas is through subcooler 9, second row balloon
Valve 11 and check valve 12 are discharged in air accumulator, form the exhaust process in D chamber.
In the process, when D cavity pressure exceedes pressure at expulsion, now D cavity pressure=A cavity pressure-C cavity pressure+B chamber
Pressure.Because C chamber is communicated with oil sump, communicate with air, can disregard, and A chamber is gas inlet pressure.Therefore, D now
Cavity pressure is pressure at expulsion=oil pressure+admission pressure.It follows that the admission pressure of gas is bigger, required oil pressure is got over
Little, power demand is less.
When plunger 22 moves to top, oil pressure can raise rapidly, and reversal valve 8 commutates after receiving signal, now reversal valve 8
It is in and intersect the state communicating.At this moment, pressure oil will flow to C chamber, and the oil in B chamber returns to oil sump 18, and oil cylinder piston 28 is in pressure
Move upwards in the presence of power oil, D chamber volume can increase, cavity pressure reduces, and the second intake valve 3 opens, gas is through first
Ball valve 1, enters D chamber from the second intake valve 3, produces the intake process in D chamber.Meanwhile, A chamber smaller volume, gas pressure increases, the
One intake valve 2 cuts out, when the pressure in A chamber reaches the i.e. pressure of required compression of pressure that first row air valve 4 is born, first
Air bleeding valve 4 is opened, and gas is discharged in air accumulator through subcooler 9, the second ball valve 11 and check valve 12, forms the exhaust in A chamber
Journey.
In the process, when A cavity pressure exceedes pressure at expulsion, now A cavity pressure=D cavity pressure-B cavity pressure+C chamber
Pressure.Because B chamber is communicated with oil sump, communicate with air, can disregard, and A chamber is gas inlet pressure.Therefore, A now
Cavity pressure is pressure at expulsion=oil pressure+admission pressure.It follows that the admission pressure of gas is bigger, required oil pressure is got over
Little, power demand is less.
When plunger 22 moves to top, oil pressure can raise rapidly, and reversal valve 8 commutates after receiving signal, now reversal valve 8
It is in and intersect the state communicating.At this moment, pressure oil will flow to B chamber, and the oil in C chamber returns to oil sump 18, and oil cylinder piston 28 is in pressure
Move downward in the presence of power oil, A chamber volume can increase, cavity pressure reduces, and the second intake valve 3 opens, gas is through first
Ball valve 1, enters A chamber from the second intake valve 3, produces the intake process in A chamber.Meanwhile, D chamber smaller volume, gas pressure increases, the
One intake valve 2 cuts out, when the pressure in D chamber reaches the i.e. pressure of required compression of pressure that first row air valve 4 is born, first
Air bleeding valve 4 is opened, and gas is discharged in air accumulator through subcooler 9, the second ball valve 11 and check valve 12, forms the exhaust in D chamber
Journey.
Embodiment 2：
Fig. 3 is second embodiment of the present invention.It is to use two stages of compression, increased a main frame cylinder 6,
The oil cylinder oil inlet mouth 36 of two host computer systems is connected with control system respectively；First air inlet in second host computer system
Valve 2, the second intake valve 3 are communicated with the first row air valve 4 of upper level host computer system and second row air valve 5；First host computer system
The first intake valve 2, the second intake valve 3 communicated with the inlet end of compressor by control system；The of second host computer system
One air bleeding valve 4 and second row air valve 5 are connected with the exhaust end of compressor respectively.
One stage of compression is changed into two stages of compression by the present embodiment, so can reduce the pressure ratio of gas, to compression process more
Favorably.Certainly three-level or more can also be increased to, the pressure of so required oil pump is just relatively reduced, works advantageously, but
The cost of product can increase；Meanwhile, if discharge capacity to be increased is it is only necessary to increase the number of cylinders of every one-level.
Meanwhile, in the present embodiment, dynamical system has been changed to a hydraulic workstation, will concentrate all hydraulic element
It is installed together, thus reducing volume.
This patent is to promote hydraulic piston thus driving plunger upward and downward that gas is compressed with hydraulic oil, upper and lower two
Hold as symmetrical cylinder, when compressed media above, enter medium below, below compressed media when, enter medium above, middle is liquid
Cylinder pressure, is separated by piston.
In the present invention, main consumable accessory is cylinder seal, seals for convenience of changing, cylinder intermediate mass 25 oil cylinder intermediate mass 26
For separate in order to not need when dismantling cylinder to dismantle oil cylinder, design than before improves a lot；
It is connected on cylinder by short rod 31 respectively in the first cylinder contiguous block 21 and the second cylinder contiguous block 32,
One cylinder 23 and the second cylinder 37 are located at and are provided with venting on cylinder intermediate mass 25 and the cylinder wall of oil cylinder intermediate mass 26 abutted surface
Hole 33, this air vent 33 plays protection cylinder seal effect, and when cylinder seal 34 damages, medium flows out from air vent 33, prevents
Damage cylinder seal 35.
Specific embodiment described herein is only explanation for example to present invention spirit.The affiliated technology of the present invention is led
The technical staff in domain can be made various modifications or supplement or replaced using similar mode to described specific embodiment
Generation, but the spirit of the present invention can not be deviateed or surmount scope defined in appended claims.
Although more employing the first ball valve 1 herein, the first intake valve 2, the second intake valve 3, first row air valve 4, the
Two air bleeding valves 5, main frame cylinder 6, reversal valve 8, cooler 9, safety valve 10, the second ball valve 11, check valve 12, oil cooler 13, energy storage
Device 14, filter 15, oil pump 16, overflow valve 17, oil sump 18, the first cylinder contiguous block 21, plunger 22, cylinder 23, cylinder barrel flange
24, cylinder intermediate mass 25, oil cylinder intermediate mass 26, oil cylinder piston sealing ring 27, oil cylinder piston 28, oil cylinder 29, long draw 30, short draws
Bar 31, the second cylinder contiguous block 32, air vent 33, cylinder seal 34, cylinder seal 35, oil cylinder oil inlet mouth 36, the second cylinder 37
Deng term, but it is not precluded from the possibility using other terms.Using these terms, it is to more easily describe and explain this
The essence of invention；It is all contrary with spirit of the present invention for being construed as any additional restriction.
Claims (3)
1. a kind of reciprocating plunger type gas compressor, including：Host computer system, the control system being connected with host computer system and cooling system
System, the dynamical system being connected with control system, the process gas system that is connected with cooling system it is characterised in that
Host computer system includes main frame cylinder (6), and main frame cylinder (6) includes：Plunger (22), the first cylinder (23), the second cylinder (37), oil
Cylinder (29), wherein：One end of first cylinder (23) is connected with oil cylinder (29), and the other end is provided with the first cylinder contiguous block (21), post
Plug (22) enters in the first cylinder (23) afterwards through oil cylinder (29), and forms seal cavity A with the first cylinder contiguous block (21)；Close
The relative both sides of envelope cavity A are respectively arranged with the first intake valve (2), first row air valve (4)；Second cylinder (37) and the first cylinder
(23) the symmetrical other end being connected to oil cylinder (29), plunger (22) enters the second cylinder (37) from one end of the second cylinder (37)
Form seal cavity D with the second cylinder contiguous block (32) on the second cylinder (37) other end afterwards；The relative both sides of seal cavity D
On be respectively arranged with the second intake valve (3) and second row air valve (5)；First intake valve (2), the second intake valve (3) pass through to control
System is connected with the inlet end of compressor；First row air valve (4), second row air valve (5) pass through the row of cooling system and compressor
Gas end connects；Plunger (22) be located at oil cylinder (29) in partly on be provided with oil cylinder piston (28), be provided with oil cylinder piston
Sealing ring (27), oil cylinder (29) is divided into the oil pocket B and oil pocket C of upper and lower two sealings by this oil cylinder piston (28)；Oil pocket B and oil pocket
The oil cylinder oil inlet mouth (36) being connected with control system is respectively arranged with C；In the first cylinder (23) and oil cylinder (29) connecting portion
And second cylinder (37) and oil cylinder (29) connecting portion at be provided with cylinder intermediate mass (25) and oil cylinder intermediate mass (26), should
Cylinder intermediate mass (25) and oil cylinder intermediate mass (26) are fixed on the first cylinder (23) and the second cylinder (37) by long draw (30)
Cylinder flange (24) on, in the cylinder between cylinder seal (34), described oil cylinder intermediate mass (26) setting are provided with block (25)
There is cylinder seal (35)；By cylinder intermediate mass (25), oil cylinder intermediate mass (26), oil cylinder (29) and cylinder are kept apart, be therefore
Make seal damaged, gas also will not infiltrate into hydraulic oil；
Dynamical system includes accumulator (14), filter (15), oil pump (16), overflow valve (17) and oil sump (18), oil pump (16)
With overflow valve (17) parallel connection after one end be connected with oil sump (18), the other end is connected with filter (15), filter (15) another
The reversal valve (8) of end and accumulator (14) and control system connects；
Cooling system includes cooler (9) and oil cooler (13), the inlet end of cooler (9) and first row air valve (4), second row
Air valve (5) is connected, and outlet side is connected with the safety valve (10) of process gas system and the second ball valve (11), and oil cooler (13) one end is even
Connect reversal valve (8), the other end connects oil sump (18)；
Process gas system includes safety valve (10), the second ball valve (11), check valve (12) and pipeline, safety valve (10) and the second ball
One end of valve (11) is connected with the cooler (9) of cooling system, and the other end is connected with compressor air-discharging end by check valve (12)；
Control system includes the first ball valve (1), the first intake valve (2), the second intake valve (3), first row air valve (4), second row
Air valve (5) and reversal valve (8), the first ball valve (1) terminates the inlet end of compressor, other end and the first intake valve (2) and
Second intake valve (3) is simultaneously connected with；First row air valve (4) and second row air valve (5) are connected with cooler (9) more simultaneously, commutation
One end of valve (8) is connected with the oil cylinder oil inlet mouth (36) of the oil pocket B and oil pocket C of main frame cylinder (6), the other end respectively with filter
(15) connect with oil cooler (13)；
Plunger (22), oil cylinder piston (28) forms seal cavity A, oil pocket B, oil pocket C, seal cavity D after main frame cylinder (6) installation
Four chambeies, wherein, seal cavity A, seal cavity D are air cavity, and oil pocket B, oil pocket C are oil pocket；Transport downwards in oil cylinder piston (28)
In dynamic process, seal cavity A chamber volume can increase, and cavity pressure reduces, and the first intake valve (2) is opened, and gas is through first
Ball valve (1), enters seal cavity A from the first intake valve (2), produces the intake process of seal cavity A；Meanwhile, seal cavity D is held
Amass and reduce, gas pressure increases, the second intake valve (3) cuts out, produce the compression process of seal cavity D, when in seal cavity D
Pressure reach the pressure that second row air valve (5) can bear i.e. the pressure of required compression when, second row air valve (5) is opened, gas
It is discharged in air accumulator through subcooler (9), the second ball valve (11) and check valve (12), form the exhaust process of seal cavity D；?
During this, when in seal cavity D, pressure exceedes pressure at expulsion, now seal cavity D pressure=seal cavity A pressure-oil
Chamber C pressure+oil pocket B pressure；Because oil pocket C is communicated with oil sump, communicate with air, oil pocket C pressure is ignored, and annular seal space
Body A is gas inlet pressure；Therefore, seal cavity D pressure now is pressure at expulsion=oil pressure+admission pressure；Thus may be used
Know, the admission pressure of gas is bigger, required oil pressure is less, and power demand is less；
When plunger (22) moves to bottom, oil pressure can raise rapidly, and reversal valve (8) commutates after receiving signal, now reversal valve
(8) it is in and intersect the state communicating；At this moment, pressure oil will flow to oil pocket C, and the oil in oil pocket B returns to oil sump (18), and oil cylinder is lived
Plug (28) moves in the presence of pressure oil upwards, and seal cavity D volume can increase, and cavity pressure reduces, the second intake valve (3)
Open, gas, through the first ball valve (1), enters seal cavity D from the second intake valve (3), produces the air inlet of seal cavity D
Journey；Meanwhile, seal cavity A smaller volume, gas pressure increases, and the first intake valve (2) cuts out, when the pressure in seal cavity A
Reach the pressure that first row air valve (4) born i.e. the pressure of required compression when, first row air valve (4) is opened, and gas is through supercooling
But device (9), the second ball valve (11) and check valve (12) are discharged in air accumulator, form the exhaust process of seal cavity A；
In the process, when in seal cavity A, pressure exceedes pressure at expulsion, now seal cavity A pressure=seal cavity D pressure
Power-oil pocket B pressure+oil pocket C pressure；Because oil pocket B is communicated with oil sump, communicate with air, oil pocket B pressure is ignored, and
Seal cavity A is gas inlet pressure；Therefore, seal cavity A pressure now is pressure at expulsion=oil pressure+admission pressure；
It follows that the admission pressure of gas is bigger, required oil pressure is less, and power demand is less；
When plunger (22) moves to top, oil pressure can raise rapidly, and reversal valve (8) commutates after receiving signal, now reversal valve
(8) it is in and intersect the state communicating；At this moment, pressure oil will flow to oil pocket B, and the oil in oil pocket C returns to oil sump (18), and oil cylinder is lived
Plug (28) moves downward in the presence of pressure oil, and seal cavity A volume can increase, and cavity pressure reduces, the first intake valve (2)
Open, gas, through the first ball valve (1), enters seal cavity A from the first intake valve (2), produces the air inlet of seal cavity A
Journey；Meanwhile, seal cavity D smaller volume, gas pressure increases, and the second intake valve (3) cuts out, when the pressure in seal cavity D
Reach the pressure that second row air valve (5) born i.e. the pressure of required compression when, second row air valve (5) is opened, and gas is through supercooling
But device (9), the second ball valve (11) and check valve (12) are discharged in air accumulator, form the exhaust process of seal cavity D；
For convenience of change sealing, cylinder intermediate mass (25), oil cylinder intermediate mass (26) be separate in order to dismounting cylinder when
Do not need to dismantle oil cylinder；
First cylinder contiguous block (21) and the second cylinder contiguous block (32) are connected on cylinder by short rod (31) respectively, the
One cylinder (23) and the second cylinder (37) are located at and set on cylinder intermediate mass (25) and the cylinder wall of oil cylinder intermediate mass (26) abutted surface
It is equipped with air vent (33), this air vent (33) plays protection cylinder seal effect, and when cylinder seal (34) damages, medium is from venting
Hole (33) is flowed out, and prevents from damaging cylinder seal (35)；
Dynamical system is a hydraulic workstation, will install concentratedly together all hydraulic element, thus reducing volume；
Promote oil cylinder piston thus driving plunger upward and downward that gas is compressed using hydraulic oil, upper and lower ends are symmetrical
Cylinder, when compressed media above, enters medium below, when compressing below, enters medium above, and middle is oil cylinder, is lived by oil cylinder
Plug separates.
2. a kind of method carrying out gas compression using the reciprocating plunger type gas compressor described in claim 1, its feature exists
In, including：
Oiling step：By control system to one of oil pocket B or oil pocket C oiling, thus push oil cylinder piston movement make close
Envelope one of cavity A or seal cavity D are compressed；
Air inlet step：By in ambient atmos suction seal cavity A or seal cavity D；
Steps of exhausting：When the gas pressure in the seal cavity compressed reaches desirable pressure, gas is discharged；
Switch step：Control system is swung to, the oiling in another oil pocket, thus promoting oil cylinder piston counter motion, execute into
Jia bombardier is rapid.
3. gas compression according to claim 2 method it is characterised in that
Described oiling step is：Hydraulic oil, through oil pump (16), sequentially enters filter (15) and reversal valve (8) by oil sump (18)
Enter one of oil pocket B or oil pocket C, promote oil cylinder piston (28) motion, meanwhile, the oil of another oil pocket is then through reversal valve
(8) enter oil cooler (13), return to oil sump (18)；
Described air inlet step is：Oil cylinder piston (28) band fortune plunger (22) motion is so that un-compressed seal cavity volume increases
Greatly, open the intake valve of this seal cavity, gas through the first ball valve (1), from the first intake valve (2) or the second intake valve (3)
Enter un-compressed seal cavity；
Described steps of exhausting is：Oil cylinder piston (28) motion band fortune plunger (22) motion, the seal cavity smaller volume being compressed,
Gas pressure increases, and its intake valve is closed, when the gas pressure in the seal cavity compressed reaches the pressure of required compression
When, its air bleeding valve is opened, and gas is discharged through subcooler (9), the second ball valve (11) and check valve (12)；
Described switch step is：When plunger (22) moves to bottom or moves to top, reversal valve (8) commutation is in what intersection communicated
State, pressure oil will flow to previously not by the oil pocket of oiling, is previously returned to oil sump (18) by the oil in the oil pocket of oiling simultaneously, oil
Cylinder piston (28) counter motion in the presence of pressure oil, then executes air inlet step.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410454848.1A CN104214071B (en) | 2014-09-09 | 2014-09-09 | Reciprocating plunger type gas compressor and method |
| PCT/CN2015/080751 WO2016037500A1 (en) | 2014-09-09 | 2015-06-04 | Reciprocating plunger-type gas compressor and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410454848.1A CN104214071B (en) | 2014-09-09 | 2014-09-09 | Reciprocating plunger type gas compressor and method |
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| CN104214071B true CN104214071B (en) | 2017-02-15 |
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| WO (1) | WO2016037500A1 (en) |
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| CN104214071A (en) | 2014-12-17 |
| WO2016037500A1 (en) | 2016-03-17 |
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