CN100394025C - High pressure stage lubricating method of reciprocating compressor - Google Patents
High pressure stage lubricating method of reciprocating compressor Download PDFInfo
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- CN100394025C CN100394025C CNB2007100172756A CN200710017275A CN100394025C CN 100394025 C CN100394025 C CN 100394025C CN B2007100172756 A CNB2007100172756 A CN B2007100172756A CN 200710017275 A CN200710017275 A CN 200710017275A CN 100394025 C CN100394025 C CN 100394025C
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Abstract
The invention discloses a lubricant method at high pressure stage, used in recipocal compressor, comprising that: arranging middle cooler between low pressure stage and high pressure stage and connecting them; mounting adsorption valve and exhaust valve on the cylinder cover of high pressure stage cylinder; arranging guide groove that rotates the gas on the air inlet channel from adsorption valve to the cylinder; when gas and lubricant mixture flow through the low pressure stage compression and middle cooler, part of lubricant will be guided back to the low pressure stage and another part will be carried by gas to enter into high pressure stage; when the adsorption valve of high pressure stage is opened via pressure difference and the gas lubricant enters into cylinder via the adsorption valve, the gas will first flow in guide groove, and since the guide groove has rotation, the mixture of gas and lubricant will rotate when enters into cylinder, and the lubricant will be thrown out via eccentric force, to be separated from gas, to be splashed on the cylinder wall, to lubricant the cylinder and piston.
Description
Technical field
The invention belongs to the Compressor Technology field, be specifically related to a kind of high pressure stage lubricating method of reciprocal compressor.
Background technique
Reciprocal compressor is by the opening and closing of Aspirating valves and outlet valve, realizes carrying out successively and again and again of air-breathing, compression and exhaust process.In order to obtain the gas of elevated pressures, reciprocal compressor need adopt multistage compression.In multistage compression, the level that exhaust pressure is lower is called low pressure stage, and the higher level of exhaust pressure is called high pressure stage.
Pressurized gas have widely in field such as power, boats and ships, refrigeration, accumulating or industry to be used, the main device that obtains pressurized gas is a high pressure compressor, reciprocating structure is a main structure pattern of obtaining pressurized gas, and the friction pair between the cylinder and piston is lubricated, and particularly the lubrication state of high pressure stage has material impact to the performance and the life-span of this compressor.
The compresser cylinder lubricating system mainly is divided into two kinds of splash lubrication and pressure lubrications.Splash lubrication is mainly used in the compressor of no crosshead, stepless difference, this lubricating system be by means of the oil splasher on the connecting rod with the lubricating oil splash in the crankcase to cylinder wall.Pressure lubrication is used to the compressor with crosshead.This lubricating system is to utilize special oil gun that the lubricant oil pressurization is injected cylinder and filled out letter.Oil gun is made up of a plurality of plunger-type fuel pumps, and each oil pump is corresponding to a lubricating point, and fuel delivery can be adjusted to suitable numerical value, and oil-containing is reduced to minimum degree in the gas thereby can make.Separate fully because of cylinder lubricating system and driving mechanism lubrication system again, cylinder lubricating oil can adapt with pressurized gas, so be suitable for all gases compressor.But this lubricating system makes the system authority complexity.
High pressure compressor is in order to guarantee compressor performance, and high pressure stage often adopts differential mode.Like this, the lubricated mode that just can not adopt splash lubrication of high pressure stage.The less amount of lubrication oil that contains in the high pressure stage air inlet of existing reciprocal compressor high pressure stage lubricating leaning on usually plays the lubrication between cylinder and the piston, but because most of lubricant oil exists in the gas, can not be distributed in cylinder wall preferably, so lubrication effect is relatively poor.
Based on above reason, in order to simplify reciprocal compressor high pressure stage lubricating structure, improve the reliability in the high pressure stage working procedure, need to adopt the lubricating system of high reliability.
Summary of the invention
Defective or deficiency at above-mentioned prior art exists the objective of the invention is to, and a kind of high pressure stage lubricating method of reciprocal compressor is provided, and this method is applicable to lubricating between all reciprocal compressor high pressure stage cylinder and pistons.
In order to realize above-mentioned task, the present invention takes following technical solution:
A kind of reciprocal compressor high pressure stage lubricating method is characterized in that, comprises the steps:
At first be connected interstage cooler between the low pressure stage of reciprocal compressor and high pressure stage, gas enters high pressure stage from low pressure stage through the cooling of interstage cooler;
Aspirating valves and outlet valve are installed on the cylinder cap of high pressure stage cylinder, are provided with guiding groove to the gas-entered passageway of cylinder at air-breathing valve seat; This guiding groove is used to make the air inlet of reciprocal compressor high pressure stage to produce rotation;
Produce rotation through low pressure stage compression and after the oil-containing gases of interstage cooler cooling is by the guiding groove on the high pressure stage gas-entered passageway, lubricant oil in the oil-containing gases under centrifugal action, splash and attached to cylinder wall surface on, realize lubricated between cylinder wall surface and the piston.
Method of the present invention is guiding groove to be set make gas produce rotation on the gas-entered passageway of reciprocal compressor high pressure stage, reaches the purpose of lubricated cylinder and piston.The reciprocal compressor high pressure stage lubricating method that relates among the present invention, the while can be used for the compressor of other structural types.
Description of drawings
Fig. 1 is a reciprocal compressor lubrication system sketch;
Fig. 2 is middle inter cooler schematic representation
Fig. 3 is high pressure stage sketch (a) and its gas-entered passageway schematic representation (b);
Fig. 4 is the guiding groove that makes the air inlet rotation;
Fig. 5 is the guiding groove of gas-entered passageway when being annular.
For a more clear understanding of the present invention, the present invention is described in further detail below in conjunction with drawings and Examples.
Embodiment
Above-mentioned institute drawings attached constitutes the part of specification, makes it possible to more deep understanding all structures of the present invention, and explains principle of the present invention, and set forth the purpose how this method reaches the reciprocal compressor high pressure stage lubricating.
The high pressure stage lubricating method of reciprocal compressor of the present invention is characterized in that, comprises the following steps:
At first between the low pressure stage of reciprocal compressor and high pressure stage, be connected interstage cooler, Aspirating valves and outlet valve are installed on the cylinder cap of high pressure stage cylinder, and air-breathing valve seat is provided with the guiding groove that is used to make reciprocal compressor high pressure stage air inlet generation rotation to the gas-entered passageway of cylinder.
Through low pressure stage compression and generation rotation after the cooled oil-containing gases of interstage cooler is by the guiding groove on the high pressure stage gas-entered passageway, lubricant oil in the oil-containing gases under centrifugal action, splash and attached to cylinder wall surface on, realize lubricated between cylinder wall surface and the piston.
Principle of the present invention is, when gas and oil mixture behind low pressure stage compression adherence pressure, enter the interstage cooler cooling.In interstage cooler, except the temperature that reduces lubricant oil and gas helps improving the compression efficiency of high pressure stage, lubricant oil and gas can realize that part separates, isolated lubricant oil is stored in the lower end of interstage cooler, a part is drawn gets back to low pressure stage and recycles, and remainder then enters high pressure stage under the carrying of gas.In order to guarantee that lubricant oil can be taken away by gas effectively, should flow out by the lower end as far as possible from middle cooler effluent air.When high pressure stage Aspirating valves valve block is opened under pressure reduction (gas pressure at suction valve chip two ends and spring for valve active force poor) effect, gas mixture from interstage cooler enters in the process of cylinder by Aspirating valves, at first, make gas and oil mixture in entering the process of cylinder, produce rotation by the guiding groove that certain rotation direction is arranged on the air-breathing valve seat.Because the density of lubricant oil is greater than gas density, lubricant oil can be distributed in the air-flow outside more under centrifugal action, finally be splashed to cylinder wall surface and, when piston slides, promptly reached the lubrication effect between the cylinder and piston on cylinder wall attached on the cylinder wall surface.After finishing lubricated between the cylinder and piston, parts of lubricating oil is discharged with exhaust, and part is then splashed and mixed attached to the lubricant oil on the cylinder wall surface with new, finishes lubricating of high pressure stage compression process next time.
The effect of the guiding groove on the above-mentioned gas-entered passageway is to make the oil-containing gases that enters high pressure stage produce rotation.
The shape of above-mentioned guiding groove, structure, quantity can design according to the difference of twin compressor model, and its design principle is to guarantee that air inlet produces rotation and is as the criterion.The degree of depth of guiding groove along with distance between itself and the cylinder wall reduce reduce gradually.
Below be the embodiment that the inventor provides.
As shown in Figure 1, between the low pressure stage 1 of reciprocal compressor and high pressure stage 3, be connected interstage cooler 2.Interstage cooler 2 is gas cooler or fin radiator.
Fig. 2 is the interstage cooler schematic representation.When gas that low pressure stage is discharged enters interstage cooler 2 with oil mixture after low pressure stage is compressed.Lubricant oil and gas can realize that part separates in interstage cooler 2, isolated lubricant oil 202 is stored in the lower end of interstage cooler 2, an isolated lubricant oil part is drawn gets back to low pressure stage and recycles, and remainder lubricant oil and gas composition gas mixture 201 enter high pressure stage 3.The design of interstage cooler gas outlet should make lubricant oil be carried in the process of gas flow.
High pressure stage sketch shown in Fig. 3 a has Aspirating valves 304 on cylinder 301, piston 306 and cylinder valve gap 303 and the valve seat 302 and outlet valve 305 etc. in the high pressure stage 3 of reciprocal compressor.The present invention is mainly to transforming by the gas-entered passageway of Aspirating valves 304.High pressure stage gas-entered passageway schematic representation shown in Fig. 3 b, when compressor air suction, valve block 308 is opened under the effect of pressure reduction, and spring for valve 307 is compressed.This moment reciprocal compressor high pressure stage gas-entered passageway 309 UNICOMs, gas and lubricant oil enter compression chamber by the gas-entered passageway on the valve seat 302 309.Gas-entered passageway 309 is provided with guiding groove 402 (when gas-entered passageway is circular hole) as shown in Figure 4, this guiding groove 402 be positioned at valve seat 302 gas-entered passageways 309 around (seeing it is a hole from the side), guiding groove 402 is more little the closer to cylinder inner wall 401 its degree of depth, the clearance volume of compressor can be reduced so on the one hand, the rotation degree of air inlet can be strengthened on the other hand.
When the gas-entered passageway of compressor high pressure stage is annular, guiding groove 402 offer example as shown in Figure 4, it offers principle is to make the air inlet of high pressure stage produce whole rotation, but not the rotation of regional area.
When the high pressure stage of reciprocal compressor was irregular shape or a plurality of gas-entered passageway, offering of guiding groove should make charge air flow produce whole rotation.
The shape of guiding groove and quantity can exert an influence to the rotation degree of gas, and the present invention only example goes out two kinds of guiding grooves (Fig. 4, Fig. 5).Therefore guiding groove offer method and principle is---make the compressor air inlet produce the flow channel of rotation.Thereby any method that makes compressor air inlet generation rotation reach separated from the gas, the lubricated cylinder of lubricant oil by gas-entered passageway all should belong to protection scope of the present invention.
Claims (4)
1. a reciprocal compressor high pressure stage lubricating method is characterized in that, comprises the steps:
At first be connected interstage cooler between the low pressure stage of reciprocal compressor and high pressure stage, gas enters high pressure stage from low pressure stage after the cooling of interstage cooler;
Aspirating valves and outlet valve are installed on the cylinder cap of high pressure stage cylinder, are provided with guiding groove to the gas-entered passageway of cylinder at air-breathing valve seat; This guiding groove is used to make the air inlet of reciprocal compressor high pressure stage to produce rotation;
Produce rotation through low pressure stage compression and after the oil-containing gases of interstage cooler cooling is by the guiding groove on the high pressure stage gas-entered passageway, lubricant oil in the oil-containing gases under centrifugal action, splash and attached to cylinder wall surface on, realize lubricated between cylinder wall surface and the piston.
2. the method for claim 1 is characterized in that, described interstage cooler is gas cooler or fin radiator directly is set on pipeline.
3. the method for claim 1 is characterized in that, described guiding groove has rotation direction, and the degree of depth of guiding groove along with distance between itself and the cylinder wall reduce reduce gradually.
4. the method for claim 1 is characterized in that, when the high pressure stage of reciprocal compressor was annular, irregular shape or a plurality of gas-entered passageway, offering of guiding groove should make the air-flow that enters high pressure stage produce whole rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100172756A CN100394025C (en) | 2007-01-23 | 2007-01-23 | High pressure stage lubricating method of reciprocating compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100172756A CN100394025C (en) | 2007-01-23 | 2007-01-23 | High pressure stage lubricating method of reciprocating compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101012821A CN101012821A (en) | 2007-08-08 |
| CN100394025C true CN100394025C (en) | 2008-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100172756A Expired - Fee Related CN100394025C (en) | 2007-01-23 | 2007-01-23 | High pressure stage lubricating method of reciprocating compressor |
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| CN (1) | CN100394025C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9133739B2 (en) * | 2012-05-30 | 2015-09-15 | GM Global Technology Operations LLC | Method for in-situ forming of low friction coatings on engine cylinder bores |
| WO2016014967A1 (en) | 2014-07-25 | 2016-01-28 | S.P.M. Flow Control, Inc. | Power frame assembly for reciprocating pump |
| WO2016105602A1 (en) | 2014-12-22 | 2016-06-30 | S.P.M. Flow Control, Inc. | Reciprocating pump with dual circuit power end lubrication system |
| USD759728S1 (en) | 2015-07-24 | 2016-06-21 | S.P.M. Flow Control, Inc. | Power end frame segment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1176302C (en) * | 2000-11-06 | 2004-11-17 | 日立空调系统株式会社 | Compressor possessing oil mist separator |
| CN1187559C (en) * | 2000-07-07 | 2005-02-02 | 三洋电机株式会社 | Freezer |
| CN2813390Y (en) * | 2005-07-29 | 2006-09-06 | 中国北车集团北京南口机车车辆机械厂 | Cooler for two-stage compressed air compressor |
-
2007
- 2007-01-23 CN CNB2007100172756A patent/CN100394025C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1187559C (en) * | 2000-07-07 | 2005-02-02 | 三洋电机株式会社 | Freezer |
| CN1176302C (en) * | 2000-11-06 | 2004-11-17 | 日立空调系统株式会社 | Compressor possessing oil mist separator |
| CN2813390Y (en) * | 2005-07-29 | 2006-09-06 | 中国北车集团北京南口机车车辆机械厂 | Cooler for two-stage compressed air compressor |
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| CN101012821A (en) | 2007-08-08 |
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Granted publication date: 20080611 Termination date: 20110123 |