CN102220958B - Stepless adjustment device for air quantity of reciprocating compressor intake valve - Google Patents
Stepless adjustment device for air quantity of reciprocating compressor intake valve Download PDFInfo
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- CN102220958B CN102220958B CN 201110117265 CN201110117265A CN102220958B CN 102220958 B CN102220958 B CN 102220958B CN 201110117265 CN201110117265 CN 201110117265 CN 201110117265 A CN201110117265 A CN 201110117265A CN 102220958 B CN102220958 B CN 102220958B
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Abstract
The invention discloses a stepless adjustment device for the air quantity of a reciprocating compressor intake valve. The stepless adjustment device is characterized that a rotating valve sheet arranged in a T shape with a transmission shaft is fixedly connected to the bottom end of the transmission shaft and is driven by the transmission shaft, and the rotating valve sheet is in coaxial fit withan upper seat and a bottom seat; an output shaft of a stepper motor is connected with the transmission shaft through a coupling; the rotating valve sheet is mutually spaced from a valve sheet sector hole through a valve sheet sector surface, and the upper seat and the bottom seat form a valve sheet sector passage by mutually aligning an upper seat sector hole and a bottom seat sector hole; when the valve sheet sector surface rotates to the position of the valve sheet sector passage, an air valve is closed; and when the valve sheet sector hole rotates to the position of the valve sheet sector passage, the air valve is opened. According to the stepless adjustment device disclosed by the invention, the stepless adjustment of the air quantity of a reciprocating compressor within the range of 0-100% can be realized.
Description
Technical field
The present invention relates to a kind of Reciprocting piston compressor tolerance stepless regulator.
Background technique
Reciprocating compressor is widely used in the fields such as oil refining, chemical industry, national defence, metallurgy, the needs that change for adapting to technological process, and compressor in most cases need to not move under full load, need to carry out Flow-rate adjustment according to technological process.The stepless airflow regulation method that backs down Aspirating valves is wide because of regulation range, can realize the step-less adjustment in 0～100% scope, and can reduce the advantage such as energy waste and receive much concern.Fig. 1 is the principle circulation indicator diagram that backs down Aspirating valves tolerance step-less adjustment, P
sThe pressure of inspiration(Pi) of compressor, P
dBe the exhaust pressure of compressor, in the situation that does not have the tolerance stepless regulating system, the compressor cycle indicated work is shown in curve a-b-c-d-a; Having in the regulating system situation, suction valve is forced to back down until just cut out during piston arrives e location point, and the circulation indicated work is shown in curve a-b-c-e-f-a; The indicated work that each recycle compressor is saved is shown in curve c-e-f-d-c, and different air valve closed position point e are representing different air displacemenies.The characteristics of the method are the tolerance that only compression needs, and unnecessary gas refluxes from suction valve, and (gas bypass of the compressing refluxes) method of therefore regulating with bypass is compared, and has saved indicated work, has reduced energy waste.Backing down air valve tolerance stepless regulating system and need to regulate each suction valve in the prior art, system architecture comprises hydraulic station, the hydraulic pressure element, solenoid valve and actuator etc., its parts are various, and actuator affects the life-span of air valve middle valve plate to the air valve frequent impact.
Existing a kind of Reciprocting piston compressor backs down suction valve tolerance stepless regulator, such as disclosed technological scheme among the american documentation literature US5833209, include the parts such as hydraulic station, solenoid valve and actuator, produce the hydraulic coupling pulse by high-frequency electromagnetic valve, drive actuator by hydraulic piston and force to back down suction valve.This technological scheme complex structure, transmission part are various, and solenoid valve is in the high-frequency work state, and actuator constantly impacts suction valve, and the reliability of element is had very high requirement.Chinese patent CN1987098A discloses a kind of air inlet valve device that backs down of time-based control, to adopt stepper motor to drive a rotation fluid power distributor, play the effect identical with solenoid valve in the american documentation literature US5833209 disclosed device, produce pressure pulse, drive actuator by hydraulic piston and force to back down suction valve, its package unit complex structure needs to use hydraulic station, and there is frequently impact in actuator to air valve.
Summary of the invention
The object of the present invention is to provide a kind of reciprocal compressor suction valve tolerance stepless regulator of simple in structure, reliable performance.Can not only realize the tolerance step-less adjustment in reciprocal compressor 0～100% scope, can improve the working efficiency of compressor simultaneously, reduce the waste of the energy; Package unit easy realization simple in structure, simultaneously reliable, have long operation period and working life.
The technical solution adopted for the present invention to solve the technical problems is:
The structural feature of reciprocal compressor suction valve tolerance stepless regulator of the present invention is:
What connect firmly in the transmission shaft bottom and driven by transmission shaft is one to be the rotary valve plate of "T"-shaped setting with described transmission shaft, and described rotary valve plate is coaxial cooperation between rotary valve plate and the seat of honour and the base between the seat of honour and base; The output shaft of stepper motor connects by coupling with transmission shaft;
Described rotary valve plate is with valve block covering of the fan and valve block fan space, hole, corresponding seat of honour fan shaped borehole and the base fan shaped borehole of having respectively on the described seat of honour and base, described seat of honour fan shaped borehole is identical area distribution with base fan shaped borehole and valve block fan hole, the described seat of honour and base are mutually to aim at seat of honour fan shaped borehole and base fan shaped borehole to consist of the fan-shaped runner of valve seat, and fastening by base screw and seat of honour screw;
Stepper motor drives rotary valve plate by transmission shaft and rotates, and air valve was closed when the valve block covering of the fan turned to the fan-shaped runner of valve seat position; Air valve was opened when valve block fan hole turned to the fan-shaped runner of valve seat position.
The structural feature of reciprocal compressor suction valve tolerance stepless regulator of the present invention also is:
On the surface of contact at described rotary valve plate and the seat of honour, and the surface of contact between described rotary valve plate and base is separately installed with up-thrust bearing and lower thrust-bearing.
The angle of described valve block covering of the fan, valve block fan hole, base fan shaped borehole and seat of honour fan shaped borehole is θ,
N in the formula is the total number of valve block covering of the fan on the rotary valve plate.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the airflow path of rotary air valve is direct current type among the present invention, compares with existing reciprocating compressor self-acting valve, and its flow resistance is far smaller than self-acting valve, can reduce the flow losses that caused by suction valve, improves compressor operating efficient; The valid circulation area of rotary air valve also is far longer than self-acting valve, when carrying out reciprocating compressor tolerance step-less adjustment design or existing air valve transformed, adopt the present invention, each side of each cylinder only need to design or transform a small amount of suction valve just can reach good adjusting and energy-saving effect, and existing tolerance stepless regulating system must be controlled all suction valves and just can reach same effect;
2, rotary air valve of the present invention is compared with existing self-acting valve, the valve block that rotatablely moves has replaced reciprocating valve block, reduced the impact damage that collision brings to valve block, and owing to there is not actuator's direct effect to impact valve block, the life-span of air valve and reliability can improve greatly;
3, rotary valve block is directly driven by stepper motor among the present invention, compares with existing tolerance step-less adjustment, has not had the complicated transmission part such as hydraulic station, solenoid valve, actuator, and system is simplified greatly, can improve the reliability of system.
Description of drawings
Fig. 1 backs down Aspirating valves tolerance step-less adjustment circulation indicator diagram in the prior art;
Fig. 2 a is structural principle schematic representation of the present invention;
Fig. 2 b is the partial enlarged drawing of Fig. 2 a;
Fig. 3 is suction valve rotary valve plate schematic representation among the present invention;
Fig. 4 is suction valve base schematic representation among the present invention;
Fig. 5 is suction valve seat of honour schematic representation among the present invention;
Number in the figure: 1 seat of honour; 2 bases; 3 rotary valve plates; 4 up-thrust bearings; 5 lower thrust-bearings; 6 tightening nuts; 7 transmission shafts; 8 coupling; 9 stepper motors; 10 valve block covering of the fans; 11 valve blocks fan hole; 12 center holes; 13 valve block seamed edges; 14 base screws; 15 base fan shaped boreholes; 16 seat of honour screws; 17 seat of honour fan shaped boreholes.
Embodiment
Referring to Fig. 2 a and Fig. 2 b, in the present embodiment, what connect firmly in the bottom of transmission shaft 7 and driven by transmission shaft 7 is one to be the rotary valve plate 3 of "T"-shaped setting with transmission shaft 7, and rotary valve plate 3 is coaxial cooperation between rotary valve plate 3 and the seat of honour 1 and base 2 between the seat of honour 1 and base 2; The output shaft of stepper motor 9 connects by coupling 8 with transmission shaft 7, and the bottom of transmission shaft 7 is fixedly installed in the center hole 12 of rotary valve plate 3;
Shown in Figure 3, rotary valve plate 3 is with valve block covering of the fan 10 and valve block fan 11 spaces, hole, and as runner, outer rim is valve block seamed edge 13 with its fan sheet fan hole 11, and this structural type can obtain maximum circulation area;
As shown in Figure 4 and Figure 5, corresponding seat of honour fan shaped borehole 17 and the base fan shaped borehole 15 of having respectively on the seat of honour 1 and base 2, it is identical area distribution that seat of honour fan shaped borehole 17 is fanned hole 11 with base fan shaped borehole 15 and the valve block on the rotary valve plate 3, the seat of honour 1 and base 2 are mutually to aim at base fan shaped borehole 15 with seat of honour fan shaped borehole 17 to consist of the fan-shaped runner of valve seat, and undertaken fasteningly by tightening nut 6 by base screw 14 and seat of honour screw 16, form the fan-shaped runner of valve seat with this; In order to make the tightness of rotary valve plate when closing better, the angle that the valve block covering of the fan of rotary valve plate 3 can be set is a bit larger tham the sector region angle of the fan-shaped runner of valve seat.
In the implementation, on the surface of contact at rotary valve plate 3 and the seat of honour 1, and the surface of contact between rotary valve plate 3 and base 2 is separately installed with up-thrust bearing 4 and lower thrust-bearing 5, realizes being slidingly matched between rotary valve plate and base and the seat of honour with thrust-bearing, reduces rotational resistance.
The angle in valve block covering of the fan 10 and valve block fan hole 11 is θ on the rotary valve plate 3,
Determine that wherein N is the runner number of air valve, namely the valve block covering of the fan total number of rotary valve plate 3.
Stepper motor turns an angle θ then with moving valve plate rotating photo angle θ together, stepper motor rotates once, the rotation of rotary valve plate can make the air valve runner open or close, realize the keying of suction valve, control system just can be controlled the open and close moment of rotary suction valve by the control step motor thus.
When compresser cylinder begins air inlet, 3 rotations of stepper motor driven rotary valve block make the runner of air valve be in open mode; When intake process finishes, reflux through partial journey, when gas reached required air displacement requirement in the cylinder, 3 rotations of stepper motor driven rotary valve block made rotary valve plate 3 close the gas check valve runner, and compressor enters compression stage.
The control command that stepper motor 9 receives control module is controlled the open and close of suction valve in real time, after the cylinder exhaust stage finishes, stepper motor 9 is carried out control command, rotate the θ angle, by 3 rotations of transmission shaft 7 driven rotary valve blocks, valve block fan hole 11 forwards the position of base fan shaped borehole 15 and seat of honour fan shaped borehole 17 to, makes INO, and compresser cylinder begins air-breathing; Expiratory phase enters refluxing stage after finishing, when residual gas in the cylinder satisfies the requirement of compressor air-discharging amount, stepper motor 9 is carried out control command, rotate the θ angle, by 3 rotations of transmission shaft 7 driven rotary valve blocks, valve block covering of the fan 10 forwards the position of base fan shaped borehole 15 and seat of honour fan shaped borehole 17 to, and suction valve cuts out, compressor enters compression and exhaust phase, has realized the process of tolerance step-less adjustment.
Claims (3)
1. reciprocal compressor suction valve tolerance stepless regulator is characterized in that:
What connect firmly in transmission shaft (7) bottom and driven by transmission shaft (7) is one to be the rotary valve plate (3) of "T"-shaped setting with described transmission shaft (7), described rotary valve plate (3) is positioned between the seat of honour (1) and the base (2), is coaxial cooperation between rotary valve plate (3) and the seat of honour (1) and base (2); The output shaft of stepper motor (9) connects by coupling (8) with transmission shaft (7);
Described rotary valve plate (3) is with valve block covering of the fan (10) and valve block fan space, hole (11), corresponding seat of honour fan shaped borehole (17) and the base fan shaped borehole (15) of having respectively on the described seat of honour (1) and base (2), described seat of honour fan shaped borehole (17) is identical area distribution with base fan shaped borehole (15) and valve block fan hole (11), the described seat of honour (1) and base (2) are mutually to aim at seat of honour fan shaped borehole (17) and base fan shaped borehole (15) to consist of the fan-shaped runner of valve seat, and fastening by base screw (14) and seat of honour screw (16);
Stepper motor (9) drives rotary valve plate (3) by transmission shaft (7) and rotates, and air valve was closed when valve block covering of the fan (10) turned to the fan-shaped runner of valve seat position; Air valve was opened when valve block fan hole (11) turned to the fan-shaped runner of valve seat position.
2. reciprocal compressor suction valve tolerance stepless regulator according to claim 1, it is characterized in that: on the surface of contact at described rotary valve plate (3) and the seat of honour (1), and the surface of contact between described rotary valve plate (3) and base (2) is separately installed with up-thrust bearing (4) and lower thrust-bearing (5).
3. reciprocal compressor suction valve tolerance stepless regulator according to claim 1, it is characterized in that: the angle of described valve block covering of the fan (10), valve block fan hole (11), base fan shaped borehole (15), seat of honour fan shaped borehole (17) is θ
N in the formula is the total number of valve block covering of the fan on the rotary valve plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110117265 CN102220958B (en) | 2011-05-09 | 2011-05-09 | Stepless adjustment device for air quantity of reciprocating compressor intake valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110117265 CN102220958B (en) | 2011-05-09 | 2011-05-09 | Stepless adjustment device for air quantity of reciprocating compressor intake valve |
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| CN102220958A CN102220958A (en) | 2011-10-19 |
| CN102220958B true CN102220958B (en) | 2013-02-06 |
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| CN 201110117265 Active CN102220958B (en) | 2011-05-09 | 2011-05-09 | Stepless adjustment device for air quantity of reciprocating compressor intake valve |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937084A (en) * | 2012-10-30 | 2013-02-20 | 合肥通用机械研究院 | Air volume regulating system for compressor |
| CN103244399B (en) * | 2013-04-17 | 2015-05-20 | 台州环天机械有限公司 | Stepless gas-volume adjusting method and device for large-scale reciprocating compressor |
| CN110584530A (en) * | 2019-08-08 | 2019-12-20 | 郭绍华 | Industrial dust collector adopting hollow fiber membrane filter element |
| CN114856837A (en) * | 2022-05-09 | 2022-08-05 | 洛阳拖拉机研究所有限公司 | Backpressure regulating device integrated on elbow of exhaust tail pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5388968A (en) * | 1994-01-12 | 1995-02-14 | Ingersoll-Rand Company | Compressor inlet valve |
| CN1198803A (en) * | 1995-10-03 | 1998-11-11 | 苏舍-布尔克哈特机械制造有限公司 | Method and device for producing an intake valve of plate-like construction |
| DE202005003375U1 (en) * | 2005-02-28 | 2005-05-25 | Tevkür, Talip | Rotating valve IC engine with a turbine blown air input into the combustion chamber |
| CN2890348Y (en) * | 2005-12-09 | 2007-04-18 | 华志成 | Gas distribution mechanism of internal combustion engine using rotary valve plate |
| CN1987098A (en) * | 2006-12-22 | 2007-06-27 | 浙江大学 | Device for lifting piston compressor air inlet valve based on time control |
-
2011
- 2011-05-09 CN CN 201110117265 patent/CN102220958B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5388968A (en) * | 1994-01-12 | 1995-02-14 | Ingersoll-Rand Company | Compressor inlet valve |
| CN1198803A (en) * | 1995-10-03 | 1998-11-11 | 苏舍-布尔克哈特机械制造有限公司 | Method and device for producing an intake valve of plate-like construction |
| DE202005003375U1 (en) * | 2005-02-28 | 2005-05-25 | Tevkür, Talip | Rotating valve IC engine with a turbine blown air input into the combustion chamber |
| CN2890348Y (en) * | 2005-12-09 | 2007-04-18 | 华志成 | Gas distribution mechanism of internal combustion engine using rotary valve plate |
| CN1987098A (en) * | 2006-12-22 | 2007-06-27 | 浙江大学 | Device for lifting piston compressor air inlet valve based on time control |
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| CN102220958A (en) | 2011-10-19 |
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Owner name: HEFEI GENERAL ENVIRONMENT CONTROL TECHNOLOGY CO., Free format text: FORMER OWNER: HEFEI UNIVERSAL MACHINERY INST. Effective date: 20140319 |
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Free format text: CORRECT: ADDRESS; FROM: 230088 HEFEI, ANHUI PROVINCE TO: 230094 HEFEI, ANHUI PROVINCE |
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Effective date of registration: 20140319 Address after: High tech Zone Hefei city Anhui province 230094 Xisi Road No. 9 (electromechanical Industrial Park) Patentee after: Hefei General Environment Control Technology Co., Ltd. Address before: 230088 No. 888 Changjiang West Road, Hefei, Anhui Patentee before: Hefei Universal Machinery Inst. |