CN102828927B - Combined pneumatic compressor and compression method thereof - Google Patents
Combined pneumatic compressor and compression method thereof Download PDFInfo
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- CN102828927B CN102828927B CN201210335422.5A CN201210335422A CN102828927B CN 102828927 B CN102828927 B CN 102828927B CN 201210335422 A CN201210335422 A CN 201210335422A CN 102828927 B CN102828927 B CN 102828927B
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Abstract
The invention discloses a combined pneumatic compressor and a compression method thereof, and relates to the field of gas compression. The combined pneumatic compressor comprises a mechanical compression device and a high-pressure compression device, wherein a compression cylinder in the high-pressure compression device comprises a cavity A, a cavity B, a cavity C and a cavity D. when the gas is compressed by the combined pneumatic compressor, the low-pressure gas is compressed to medium-pressure gas through the mechanical compression device, the medium-pressure gas is compressed to high-pressure gas through the high-pressure compression device and is discharged through the cavity A or the cavity D, and the gas in the cavity B or the cavity C is circulated into the mechanical compression device and is compressed again. According to the invention, liquid is not mixed in a process of compressing the gas, the quality of the gas obtained after compression is ensured, the process of compressing the gas is quicker, the working efficiency is higher, when the low-pressure gas is compressed, the gas is difficult to escape, is difficult to pollute an external environment, and is safer.
Description
Technical field
The present invention relates to gas compression field, be specifically related to a kind of combined pneumatic compressor and compression method thereof.
Background technology
Compressor is a kind of by the fluid machinery of low-pressure gas boil down to gases at high pressure.Existing compressor generally comprises two kinds: 1, crank-connecting rod mechanical compressor (hereinafter referred to as mechanical compressor), and its operation principle forces to drive and Compressed Gas by quadric chain; 2, hydraulic piston type compressor (hereinafter referred to as hydraulic compressor), its operation principle drives and Compressed Gas by hydraulic power.
Mechanical compressor and hydraulic piston type compressor have the following disadvantages respectively when Compressed Gas:
Mechanical compressor is when admission pressure lower (admission pressure is close to normal pressure), the piston of mechanical compressor inside needs high-speed motion and need be equipped with the motor of relatively high power could by low-pressure gas boil down to gases at high pressure, not only use cost is higher, and there is locking phenomenon in the process of to expand with heat and contract with cold at gas in order to avoid the piston of high-speed motion, need to leave certain gap, to make the gas leak in mechanical compressor to ensure the normal operation of piston during mechanical compressor sealing.The gas leak amount of the sealing off gap restriction of mechanical compressor is generally 0.3% ~ 0.6% of gas in mechanical compressor, but because low pressure gas knows from experience boil down to gases at high pressure, and gases at high pressure can be leaked by the gap of mechanical compressor fast, therefore in actual applications, in mechanical compressor, the outer discharge of gas is generally 0.6% ~ 3% of compression gas in the jar, not only cause a large amount of gas wastes, improve use cost, and special gas leaks and pollutes the environment, the certain hidden danger of security presence.
In use, because its inside is mixed with liquids and gases simultaneously, therefore gas can be subject to the pollution of liquid to hydraulic compressor, and the gaseous mass being mixed with liquid is lower; And the power of the motor of hydraulic compressor outfit is less, the motor of smaller power makes hydraulic compressor that the process of low-pressure gas boil down to gases at high pressure is relatively slower, and operating efficiency is lower.
Summary of the invention
For the defect existed in prior art, the object of the present invention is to provide a kind of combined pneumatic compressor and compression method thereof, it can not be mixed with liquid in the process of Compressed Gas, the quality of the gas obtained after ensure that compression, not only the process of Compressed Gas is very fast, and operating efficiency is higher, and during compression and low pressure gas, gas is difficult to leak, gas is difficult to pollute external environment condition, safer.
For reaching above object, the technical scheme that the present invention takes is: a kind of combined pneumatic compressor, comprise mechanical compression unit, also comprise the high pressure compressed device be connected with mechanical compression unit exhaust end, described high pressure compressed device comprises compression cylinder, and its inside is provided with dividing plate and I shape piston, and described dividing plate is positioned in the middle part of compression cylinder, described I shape piston comprises piston head plate, piston base plate and piston rod, and described piston head plate and piston base plate lay respectively at dividing plate both sides; Described piston head plate, dividing plate and piston base plate are by the spaced apart in compression cylinder, form A chamber, B chamber, C chamber and D chamber successively, A chamber and D chamber all have air admission hole and steam vent, and the A chamber chamber wall relative with D chamber is equipped with piston proximity switch, and B chamber and C chamber all have power hole; Described high pressure compressed device also comprises B1 valve, C1 valve, B2 valve and C2 valve, and described B1 valve and B2 valve are all connected by pipeline with the power hole in B chamber, and described C1 valve and C2 valve are all connected by pipeline with the power hole in C chamber; Described B2 valve is all connected by pipeline with mechanical compression unit inlet end with C2 valve, and the air admission hole in A chamber, the air admission hole in D chamber, B1 valve are all connected by pipeline with mechanical compression unit exhaust end with C1 valve.
On the basis of technique scheme, also comprise low-pressure admission valve, described low-pressure admission valve is connected with the inlet end of mechanical compression unit.
On the basis of technique scheme, described high pressure compressed device also comprises power vent check valve, and described B2 valve is all connected with mechanical compression unit by power vent check valve with C2 valve.
On the basis of technique scheme, also comprise the low pressure exhaust check valve be connected with mechanical compression unit exhaust end, the air admission hole in described A chamber, the air admission hole in D chamber, B1 valve and C1 valve are all by being connected with low pressure exhaust check valve mechanical compression unit.
On the basis of technique scheme, described high pressure compressed device also comprises power breather check valve, and described B1 valve is all connected with low pressure exhaust check valve by power breather check valve with C1 valve.
On the basis of technique scheme, also comprise air bleeding valve, the steam vent in described A chamber is all connected with air bleeding valve with the steam vent in D chamber.
On the basis of technique scheme, also comprise high pressure gas check valve, described A chamber is all connected with air bleeding valve by high pressure gas check valve with D chamber.
The compression method of combined pneumatic compressor provided by the invention, comprises the following steps: A, low-pressure gas is compressed by mechanical compression unit after obtain medium pressure gas; B, open B1 valve and C2 valve, described medium pressure gas is passed into respectively A chamber, D chamber and B chamber; Gas in gas in B chamber and D chamber all promotes the piston head plate of I shape piston to the compression of A cavity direction, and the gas in A chamber is converted into gases at high pressure and discharges after piston head plate compression; Gas in C chamber, after the compression of piston base plate, passes into mechanical compression unit by C2 valve and continues compression; After the chamber wall that C, I shape piston and A chamber are provided with piston proximity switch contacts, the piston proximity switch in A chamber sends signal, closes B1 valve and C2 valve, opens C1 valve and B2 valve, and the medium pressure gas after mechanical compression unit compression passes into A chamber, D chamber and C chamber respectively; Gas in gas in A chamber and C chamber all promotes the piston base plate of I shape piston to the compression of D cavity direction, and the gas in D chamber is converted into gases at high pressure after being subject to the compression of piston base plate and discharges; Gas in B chamber, after piston head plate compression, passes into mechanical compression unit by B2 valve and continues compression; After the chamber wall that D, I shape piston and D chamber are provided with piston proximity switch contacts, the piston proximity switch in D chamber sends signal, closes C1 valve and B2 valve, returns step B; E, circulation perform step B, C and D, until the whole boil down to gases at high pressure of all low-pressure gases.
Beneficial effect of the present invention is:
(1) the high pressure compressed device that the present invention includes mechanical compression unit and be connected with its exhaust end.When Compressed Gas, low-pressure gas is by mechanical compression unit boil down to medium pressure gas, and medium pressure gas is by high pressure compressed device boil down to gases at high pressure.Because mechanical compression unit only need by low-pressure gas boil down to medium pressure gas, the air pressure of medium pressure gas is lower than gases at high pressure, therefore the piston of mechanical compression unit inside does not need high-speed motion, and mechanical compressor does not need to be equipped with the larger motor of power yet, reduces use cost.Compared with background technology, the outer discharge that medium pressure gas is leaked by mechanical compressor gap is fewer than gases at high pressure, and a small amount of medium pressure gas leaked not only is difficult to contaminated environment, safer, and can not cause a large amount of gas wastes, reduces use cost.
(2) compression cylinder of the present invention carrys out Compressed Gas by air pressure driven plunger, does not have liquid in compression cylinder, and the gas therefore after compressed cylinder compression can not be mixed with liquid, ensure that the quality of the rear gas of compression.
(3) low-pressure gas of the present invention enters high pressure compressed device after mechanical compression unit boil down to medium pressure gas, and high pressure compressed device only needs medium pressure gas boil down to gases at high pressure.Compared with background technology, the admission pressure of high pressure compressed device is higher (being low-pressure gas in background technology), and high pressure compressed device is very fast by the process of medium pressure gas boil down to gases at high pressure, and operating efficiency is higher.
Accompanying drawing explanation
Fig. 1 is the structure flow chart of the embodiment of the present invention.
In figure: 1-mechanical compression unit, 2-high pressure compressed device, 3-compression cylinder, 4-I shape piston, 5-power breather check valve, 6-power vent check valve, 7-low-pressure admission valve, 8-low pressure exhaust check valve, 9-air bleeding valve, 10-high pressure gas check valve.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Shown in Figure 1, the combined pneumatic compressor in the embodiment of the present invention, comprises mechanical compression unit 1 and high pressure compressed device 2.The inlet end of mechanical compression unit 1 is connected by pipeline with a low-pressure admission valve 7, and low-pressure admission valve 7 can control gas and enter mechanical compression unit; The exhaust end of mechanical compression unit 1 is connected by pipeline with a low pressure exhaust check valve 8, and low pressure exhaust check valve 8 can not only ensure that the gas of discharging through mechanical compression unit 1 can not reflux.
High pressure compressed device 2 comprises compression cylinder 3, and compression cylinder 3 inside is provided with dividing plate and I shape piston 4.Dividing plate is positioned in the middle part of compression cylinder 3, and I shape piston 4 comprises piston head plate, piston base plate and piston rod, and piston head plate and piston base plate lay respectively at dividing plate both sides; Piston head plate, dividing plate and piston base plate, by the spaced apart in compression cylinder 3, form A chamber, B chamber, C chamber and D chamber from top to bottom successively.A chamber and D chamber are compression chamber, and A chamber and D chamber all have air admission hole and steam vent, and the chamber wall bottom the chamber wall of A top of chamber and D chamber is equipped with piston proximity switch; B chamber and C chamber are power cavity, and B chamber and C chamber all have power hole.
High pressure compressed device 2 also comprises B1 valve, C1 valve, B2 valve and C2 valve.B1 valve is the intake valve in B chamber, and B2 valve is the air bleeding valve in B chamber, and B1 valve and B2 valve are all connected by pipeline with the power hole in B chamber; C1 valve is the intake valve in C chamber, and C2 valve is the air bleeding valve in C chamber, and C1 valve and C2 valve are all connected by pipeline with the power hole in C chamber.The air admission hole in A chamber, the air admission hole in D chamber, B1 valve are all connected with mechanical compression unit 1 pipeline by low pressure exhaust check valve 8 with C1 valve, and B2 valve is all connected by pipeline with mechanical compression unit 1 with C2 valve.
High pressure compressed device 2 also comprises power breather check valve 5, power vent check valve 6, high pressure gas check valve 10 and air bleeding valve 9.B1 valve is all connected by pipeline with power breather check valve 5 with C1 valve, and power breather check valve 5 can ensure that the gas entering B1 valve and C1 valve can not reflux.B2 valve is all connected by pipeline with power vent check valve 6 with C2 valve, and power vent check valve 6 can ensure that the gas that B1 valve and C1 valve are discharged can not reflux.The steam vent in A chamber is all connected with air bleeding valve 9 pipeline by high pressure gas check valve 10 with the steam vent in D chamber.High pressure gas check valve 10 can ensure that the gas that A chamber steam vent and D chamber steam vent are discharged can not reflux, and air bleeding valve 9 controls the discharge of gas.
In the embodiment of the present invention, the method for combined pneumatic compressor compresses gas comprises the following steps:
Step 101: open low-pressure admission valve 7, low pressure exhaust check valve 8, power breather check valve 5, power vent check valve 6, high pressure gas check valve 10 and air bleeding valve 9.
Step 102: the low-pressure gas that need compress passes into mechanical compression unit 1 by low-pressure admission valve 7, mechanical compression unit 1 is by low-pressure gas boil down to medium pressure gas.
Step 103: open B1 valve and C2 valve, the medium pressure gas after being compressed by mechanical device passes into A chamber, D chamber and power breather check valve 5 by low pressure exhaust check valve 8 simultaneously, and the medium pressure gas passing into power breather check valve 5 enters B chamber by B1 valve; Gas in gas in B chamber and D chamber all promotes the piston head plate of I shape piston 4 to the compression of A cavity direction, and the gas in A chamber is converted into gases at high pressure after piston head plate compression, and gases at high pressure are discharged through high pressure gas check valve 10 and air bleeding valve 9; Gas in C chamber, after the compression of piston base plate, passes into mechanical compression unit 1 through C2 valve and power vent check valve 6 and continues compression;
Medium pressure gas pass into simultaneously A chamber, D chamber and B chamber time, because A chamber is identical with the medium pressure gas that D chamber passes into, the gas therefore in A chamber produces downward pressure (hereinafter referred to as F to piston head plate
a) piston base plate is produced upward pressure (hereinafter referred to as F with the gas in D chamber
d) identical; But passed into medium pressure gas in B chamber, and the gas in C chamber is discharged through C2 valve, the gas therefore in B chamber is more, and the gas in C chamber is less, and what the gas in B chamber produced piston head plate upwards pressure (hereinafter referred to as F
b) the downward pressure that produces piston base plate of the gas that is greater than C chamber is (hereinafter referred to as F
c).Due to F
a=F
d, and F
b> F
c, therefore F
a+ F
c< F
d+ F
b, namely piston head plate is subject to upwarding pressure and is greater than the downward pressure that piston base plate is subject to, therefore I shape piston 4 compresses to A cavity direction.
Step 104: after I shape piston 4 contacts with the chamber wall of A top of chamber, the piston proximity switch of A top of chamber chamber wall sends signal, close B1 valve and C2 valve, open C1 valve and B2 valve, medium pressure gas after mechanical compression unit 1 compresses passes into A chamber, D chamber and power breather check valve 5 respectively, and the gas passing into power breather check valve 5 enters C chamber by C1 valve; Gas in gas in A chamber and C chamber all promotes the piston base plate of I shape piston 4 to the compression of D cavity direction, and the gas in D chamber is converted into gases at high pressure after being subject to the compression of piston base plate, and gases at high pressure are discharged through high pressure gas check valve 10 and air bleeding valve 9; Gas in B chamber, after piston head plate compression, passes into mechanical compression unit 1 through B2 valve and power vent check valve 6 and continues compression;
Medium pressure gas pass into simultaneously A chamber, D chamber and C chamber time, F
a=F
dbut because C chamber has passed into medium pressure gas, and the gas in B chamber is discharged through C2 valve, and the gas therefore in C chamber is more, and the gas in B chamber is less, F
c> F
b.In sum, F
a+ F
c> F
d+ F
b, namely piston base plate is subject to downward pressure and is greater than the upward pressure that piston head plate is subject to, therefore I shape piston 4 compresses to D cavity direction.
Step 105: after I shape piston 4 contacts with the chamber wall bottom D chamber, the piston proximity switch of D top of chamber chamber wall sends signal, closes C1 valve and B2 valve, returns step 103.
Step 106: circulation carries out step 103 to step 105 until the whole boil down to gases at high pressure of all low-pressure gases.
Step 107: close low-pressure admission valve 7, low pressure exhaust check valve 8, power breather check valve 5, power vent check valve 6, high pressure gas check valve 10 and air bleeding valve 9.
The present invention is not limited to above-mentioned embodiment, and for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are also considered as within protection scope of the present invention.The content be not described in detail in this description belongs to the known prior art of professional and technical personnel in the field.
Claims (8)
1. a combined pneumatic compressor, comprise mechanical compression unit (1), it is characterized in that: also comprise the high pressure compressed device (2) be connected with mechanical compression unit (1) exhaust end, described high pressure compressed device (2) comprises compression cylinder (3), its inside is provided with dividing plate and I shape piston (4), described dividing plate is positioned at compression cylinder (3) middle part, and described I shape piston (4) comprises piston head plate, piston base plate and piston rod, and described piston head plate and piston base plate lay respectively at dividing plate both sides;
Described piston head plate, dividing plate and piston base plate are by the spaced apart in compression cylinder (3), form A chamber, B chamber, C chamber and D chamber successively, A chamber and D chamber all have air admission hole and steam vent, and the A chamber chamber wall relative with D chamber is equipped with piston proximity switch, and B chamber and C chamber all have power hole; Described high pressure compressed device (2) also comprises B1 valve, C1 valve, B2 valve and C2 valve, and described B 1 valve is all connected by pipeline with the power hole in B chamber with B2 valve, and described C1 valve and C2 valve are all connected by pipeline with the power hole in C chamber; Described B2 valve and C2 valve are all connected by pipeline with mechanical compression unit (1) inlet end, and the air admission hole in A chamber, the air admission hole in D chamber, B1 valve are all connected by pipeline with mechanical compression unit (1) exhaust end with C1 valve.
2. combined pneumatic compressor as claimed in claim 1, it is characterized in that: also comprise low-pressure admission valve (7), described low-pressure admission valve (7) is connected with the inlet end of mechanical compression unit (1).
3. combined pneumatic compressor as claimed in claim 2, is characterized in that: described high pressure compressed device (2) also comprises power vent check valve (6), and described B2 valve and C2 valve are all connected with mechanical compression unit (1) by power vent check valve (6).
4. combined pneumatic compressor as claimed in claim 1, it is characterized in that: also comprise the low pressure exhaust check valve (8) be connected with mechanical compression unit (1) exhaust end, the air admission hole in described A chamber, the air admission hole in D chamber, B1 valve and C1 valve are all by being connected with low pressure exhaust check valve (8) mechanical compression unit (1).
5. combined pneumatic compressor as claimed in claim 4, it is characterized in that: described high pressure compressed device (2) also comprises power breather check valve (5), and described B1 valve and C1 valve are all connected with low pressure exhaust check valve (8) by power breather check valve (5).
6. combined pneumatic compressor as claimed in claim 1, it is characterized in that: also comprise air bleeding valve (9), the steam vent in described A chamber is all connected with air bleeding valve (9) with the steam vent in D chamber.
7. combined pneumatic compressor as claimed in claim 5, it is characterized in that: also comprise high pressure gas check valve (10), described A chamber and D chamber are all connected with air bleeding valve (9) by high pressure gas check valve (10).
8., based on a compression method for the arbitrary described combined pneumatic compressor of claim 1 to 7, it is characterized in that, comprise the following steps:
A, by low-pressure gas by mechanical compression unit (1) compression after obtain medium pressure gas;
B, open B1 valve and C2 valve, described medium pressure gas is passed into respectively A chamber, D chamber and B chamber; Gas in gas in B chamber and D chamber all promotes the piston head plate of I shape piston (4) to the compression of A cavity direction, and the gas in A chamber is converted into gases at high pressure and discharges after piston head plate compression; Gas in C chamber, after the compression of piston base plate, passes into mechanical compression unit (1) by C2 valve and continues compression;
After the chamber wall that C, I shape piston (4) and A chamber are provided with piston proximity switch contacts, the piston proximity switch in A chamber sends signal, close B1 valve and C2 valve, open C1 valve and B2 valve, the medium pressure gas after mechanical compression unit (1) compression passes into A chamber, D chamber and C chamber respectively; Gas in gas in A chamber and C chamber all promotes the piston base plate of I shape piston (4) to the compression of D cavity direction, and the gas in D chamber is converted into gases at high pressure after being subject to the compression of piston base plate and discharges; Gas in B chamber, after piston head plate compression, passes into mechanical compression unit (1) by B2 valve and continues compression;
After the chamber wall that D, I shape piston (4) and D chamber are provided with piston proximity switch contacts, the piston proximity switch in D chamber sends signal, closes C1 valve and B2 valve, returns step B;
E, circulation perform step B, C and D, until the whole boil down to gases at high pressure of all low-pressure gases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210335422.5A CN102828927B (en) | 2012-09-12 | 2012-09-12 | Combined pneumatic compressor and compression method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210335422.5A CN102828927B (en) | 2012-09-12 | 2012-09-12 | Combined pneumatic compressor and compression method thereof |
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| CN102828927A CN102828927A (en) | 2012-12-19 |
| CN102828927B true CN102828927B (en) | 2015-04-29 |
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| CN201210335422.5A Active CN102828927B (en) | 2012-09-12 | 2012-09-12 | Combined pneumatic compressor and compression method thereof |
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| CN108612637A (en) * | 2016-12-13 | 2018-10-02 | 李景山 | A kind of energy-efficient air-conditioning compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5807083A (en) * | 1996-03-27 | 1998-09-15 | Tomoiu; Constantin | High pressure gas compressor |
| CA2272339A1 (en) * | 1996-11-21 | 1998-05-28 | Colin Pearson | Fluid driven pumps and apparatus employing such pumps |
| RU2220323C1 (en) * | 2002-04-24 | 2003-12-27 | Государственное унитарное предприятие "Производственное объединение "Баррикады" | Compressor with hydraulic drive |
| RU2215187C1 (en) * | 2002-04-24 | 2003-10-27 | Государственное унитарное предприятие ПО "Баррикады" | Hydraulically driven compressor |
| US7488159B2 (en) * | 2004-06-25 | 2009-02-10 | Air Products And Chemicals, Inc. | Zero-clearance ultra-high-pressure gas compressor |
| US7413418B2 (en) * | 2004-07-28 | 2008-08-19 | Honeywell International, Inc. | Fluidic compressor |
| CN201521415U (en) * | 2009-09-23 | 2010-07-07 | 武汉齐达康环保科技有限公司 | Piston type secondary compression hydraulic compressor |
| CN202833018U (en) * | 2012-09-12 | 2013-03-27 | 武汉齐达康环保科技有限公司 | Combined pneumatic compressor |
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Address after: 430000 Yongfeng street in Hubei province Wuhan city Hanyang District No. 366 Ling Peng Patentee after: Wuhan environmental protection Polytron Technologies Inc Address before: 430000 Yongfeng street in Hubei province Wuhan city Hanyang District No. 366 Ling Peng Patentee before: WUHAN QIDAKANG ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. |