CN111894843A - Self-operated pneumatic multi-air-bag clearance adjusting system of reciprocating compressor - Google Patents
Self-operated pneumatic multi-air-bag clearance adjusting system of reciprocating compressor Download PDFInfo
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- CN111894843A CN111894843A CN201910365749.9A CN201910365749A CN111894843A CN 111894843 A CN111894843 A CN 111894843A CN 201910365749 A CN201910365749 A CN 201910365749A CN 111894843 A CN111894843 A CN 111894843A
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- cylinder
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- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/16—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by adjusting the capacity of dead spaces of working chambers
Abstract
A self-operated pneumatic multi-airbag clearance adjusting system of a reciprocating compressor is characterized in that a multi-airbag clearance cylinder consists of a clearance cylinder body 9, a clearance cylinder cover 4 arranged at one end of the clearance cylinder body 9 and a plurality of airbags 10 arranged in the clearance cylinder body 9, the other end of the clearance cylinder body 9 is arranged on the cover side of an air cylinder 11 of the compressor, corresponding stop valves 8 are arranged on the airbags 10, each stop valve 8 is positioned between the corresponding airbag 10 and the air cylinder 11 of the compressor, a corresponding pneumatic cylinder 5 is arranged on each stop valve 8, and the pneumatic cylinders 5 are arranged on the cylinder cover 4 and drive the corresponding stop valves 8 to move through the pneumatic cylinders 5. The invention has the advantages that: because the self-operated pneumatic clearance adjusting system is adopted, the clearance adjusting actuating mechanism of each cylinder is connected with only 1 control cable outside, the installation of the field pipeline is reduced to the maximum extent, and the maintenance of the field pipeline is reduced to the maximum extent.
Description
Technical Field
The invention relates to the field of reciprocating compressor air volume adjustment, in particular to a method for controlling the displacement of a reciprocating compressor through clearance adjustment.
Background
At present, an energy-saving air quantity regulating system of a reciprocating compressor comprises a stepless air quantity regulating system for jacking an air inlet valve by controlling partial stroke of the air inlet valve and a clearance stepless air quantity regulating system for controlling clearance change of a compressor cylinder, and generally comprises an actuating mechanism with a servo oil cylinder and a hydraulic oil station with a motor-driven oil pump, a plurality of hydraulic oil pipelines, leakage vent pipelines and control cables are arranged on the compressor cylinder, the hydraulic oil station needs a three-phase power supply, the system is relatively complex, the sealing of a piston rod of the actuating mechanism is easy to leak, the risk of hydraulic oil leaking into the compressor cylinder to pollute media in the compressor is existed, the installation difficulty is large, the investment is large, the existing clearance regulating principle is stated in detail in an authorized publication No. CN 201865889U and an invention patent of a clearance stepless regulating actuating mechanism of a reciprocating compressor, and will not be repeated here. The principle of adjusting the clearance of the multiple air bags is described in detail in the patent publication No. CN 206801838U and the invention patent of the clearance adjusting actuating mechanism of the multiple air bags of the reciprocating compressor, and will not be repeated here. .
Disclosure of Invention
The invention aims to provide a self-operated pneumatic multi-airbag clearance adjusting system of a reciprocating compressor, aiming at the defects that an actuating mechanism with a servo oil cylinder and a hydraulic oil station with a motor-driven oil pump are generally adopted in the prior general stepless air quantity adjusting system of the reciprocating compressor, a plurality of hydraulic oil pipelines and leakage emptying pipelines are arranged on a compressor cylinder, a three-phase power supply is required for the hydraulic oil station, the system is relatively complex, a piston rod of the actuating mechanism is easy to leak, the risk of polluting media in the compressor by leaking hydraulic oil into the compressor cylinder exists, the installation difficulty is high, and the investment is relatively large.
The invention comprises a compressor cylinder and is characterized by also comprising a multi-airbag clearance cylinder, a plurality of pneumatic cylinders, a plurality of stop valves and a self-operated clearance adjusting and controlling system,
the clearance cylinder of the multi-airbag is composed of a clearance cylinder body, a clearance cylinder cover arranged at one end part of the clearance cylinder body and a plurality of airbags arranged in the clearance cylinder body, the other end part of the clearance cylinder body is arranged on the cover side of the cylinder of the compressor, the airbags are all provided with corresponding stop valves, each stop valve is positioned between the corresponding airbag and the cylinder of the compressor, each stop valve is provided with a corresponding pneumatic cylinder, the pneumatic cylinders are arranged on the clearance cylinder cover and drive the corresponding stop valves to move through the pneumatic cylinders so as to realize the communication or the closing of the airbags and the cylinder of the compressor,
the self-operated clearance adjusting and controlling system comprises an air inlet one-way valve, a high-pressure air storage tank, a low-pressure air storage tank, an exhaust one-way valve and an electromagnetic directional valve,
the clearance cylinder body and the clearance cylinder cover of the clearance cylinder with multiple airbags are provided with a first vent hole and a second vent hole which are communicated, the inlet of the first vent hole and the outlet of the second vent hole are communicated with the cylinder of the compressor,
the outlet of the first vent hole is communicated with the high-pressure air storage tank, an air inlet one-way valve is arranged between the outlet of the first vent hole and the high-pressure air storage tank, the high-pressure air storage tank is communicated with the interfaces P of the plurality of electromagnetic directional valves,
the inlet of the second vent hole is communicated with a low-pressure gas storage tank, an exhaust one-way valve is arranged between the inlet of the second vent hole and the low-pressure gas storage tank, the low-pressure gas storage tank is communicated with the interfaces T of the plurality of electromagnetic directional valves and the cavities B of the plurality of pneumatic cylinders,
the ports A of the plurality of electromagnetic directional valves are communicated with the cavities A of the corresponding plurality of pneumatic cylinders.
An air inlet channel is formed among the high-pressure air storage tank, the air inlet one-way valve, the first vent hole and the compressor cylinder.
An air outlet channel is formed among the low-pressure air storage tank, the exhaust one-way valve, the second vent hole and the compressor cylinder.
The pressure of the gas in the high-pressure gas storage tank is less than or equal to the exhaust pressure in the compressor cylinder.
The pressure of the gas in the low-pressure gas storage tank is greater than or equal to the inlet pressure in the compressor cylinder.
A plurality of air bags with the same or different volumes are arranged or separated in the clearance cylinder, the air bags are not directly communicated with each other, and the air bags are controlled to be communicated or closed with the compressor cylinder through corresponding pneumatic cylinders.
The pneumatic cylinder is a single-action cylinder, the cavity A of the pneumatic cylinder is connected with the interface A of the electromagnetic directional valve, and the cavity B of the pneumatic cylinder is communicated with the low-pressure gas storage tank.
Each air bag on the clearance cylinder of the multiple air bags corresponds to a stop valve and a pneumatic cylinder, each pneumatic cylinder controls the opening or closing of the stop valve, the action of each pneumatic cylinder corresponds to the control of a solenoid directional valve, a power air source of each pneumatic cylinder comes from a high-pressure air storage tank, and the exhaust of each pneumatic cylinder is discharged to a low-pressure air storage tank.
The pneumatic cylinder is internally provided with a spring so as to realize that the air bag is in an opening or closing state under the combined action of the spring force in the pneumatic cylinder and the gas force in the compressor cylinder.
A plurality of air bags are arranged and separated in the clearance cylinder body and are placed in parallel.
The invention has the advantages that: because the self-operated pneumatic clearance adjusting system is adopted, the clearance adjusting actuating mechanism of each cylinder is connected with only 1 control cable outside, the installation of field pipelines is reduced to the maximum extent, the maintenance of the field pipelines is reduced to the maximum extent, and the possible leakage on the field is reduced to the maximum extent; because of adopting self-operated control, do not need external air supply, hydraulic oil source or power supply, reduce the investment to the maximum extent; because the air source of the pneumatic cylinder adopts the medium in the compressor, and meanwhile, the pneumatic cylinder is arranged in the clearance cylinder, the leakage of the piston rod of the pneumatic cylinder directly leaks into the cylinder, the outward leakage of the medium in the compressor cylinder caused by the air quantity regulation is reduced to the maximum extent, the risk that the hydraulic oil leaks into the compressor cylinder to pollute the medium in the compressor is completely eliminated, and the safety of the air quantity regulation is ensured to the maximum extent.
Description of the drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic view of the connection relationship between the air bag and the stop valve.
Detailed Description
As shown in the figure, the invention consists of a compressor cylinder 11, and is characterized in that the compressor cylinder also comprises a clearance cylinder with multiple air bags, a plurality of pneumatic cylinders 5 and a plurality of stop valves 8, and a self-operated clearance adjusting control system,
the clearance cylinder of many gasbags comprises clearance cylinder 9, clearance cylinder lid 4 that sets up in clearance cylinder 9 one end tip and a plurality of gasbags 10 of installation in clearance cylinder 9, clearance cylinder 9 other end tip is installed on the lid side of the cylinder 11 of compressor, all be provided with corresponding stop valve 8 on a plurality of gasbags 10, every stop valve 8 is located between corresponding gasbag 10 and the cylinder 11 of compressor, be provided with corresponding pneumatic cylinder 5 on every stop valve 8, a plurality of pneumatic cylinders 5 are installed on clearance cylinder lid 4, and drive corresponding stop valve 8 through pneumatic cylinder 5 and move, so as to realize controlling the intercommunication or the closing of gasbag 10 and cylinder 11 of compressor,
the self-operated clearance adjusting and controlling system comprises an air inlet one-way valve 2, a high-pressure air storage tank 1, a low-pressure air storage tank 15, an exhaust one-way valve 14 and an electromagnetic directional valve 3,
the clearance cylinder body 9 of the clearance cylinder of the multi-air bag and the clearance cylinder cover 4 thereof are provided with a first vent hole 12 and a second vent hole 13 which are communicated, the inlet of the first vent hole 12 and the outlet of the second vent hole 13 are communicated with the cylinder 11 of the compressor,
the outlet of the first vent hole 12 is communicated with the high-pressure air storage tank 1, an air inlet one-way valve 2 is arranged between the outlet of the first vent hole 12 and the high-pressure air storage tank 1, the high-pressure air storage tank 1 is communicated with the interfaces P of a plurality of electromagnetic directional valves 3,
the inlet of the second vent hole 13 is communicated with a low-pressure air storage tank 15, an exhaust one-way valve 14 is arranged between the inlet of the second vent hole 13 and the low-pressure air storage tank 15, the low-pressure air storage tank 15 is communicated with the interfaces T of the plurality of electromagnetic directional valves 3 and the cavities B of the plurality of pneumatic cylinders 5,
the ports A of the plurality of electromagnetic directional valves 3 are communicated with the cavities A of the corresponding plurality of pneumatic cylinders 5.
An air inlet channel is formed among the high-pressure air storage tank 1, the air inlet one-way valve 2, the first vent hole 12 and the compressor cylinder 11.
An air outlet channel is formed among the low-pressure air storage tank 15, the exhaust check valve 14, the second vent hole 13 and the compressor cylinder 11.
The pressure of the gas in the high-pressure gas storage tank 1 is less than or equal to the exhaust pressure in the compressor cylinder 11.
The pressure of the gas in the low-pressure gas storage tank 15 is larger than or equal to the air inlet pressure in the compressor cylinder 11.
A plurality of air bags 10 with the same or different volumes are arranged or separated in the clearance cylinder, the air bags 10 are not directly communicated, and the air bags 10 are communicated or closed with the compressor cylinder 11 through corresponding pneumatic cylinders 5.
The pneumatic cylinder 5 is a single-action cylinder, the cavity A of the pneumatic cylinder 5 is connected with the interface A of the electromagnetic directional valve 3, and the cavity B is communicated with the low-pressure air storage tank 15.
Each air bag 10 on the clearance cylinder 5 of the multi-air bag is provided with a stop valve 8 and an air cylinder 5 correspondingly, each air cylinder 5 controls the opening or closing of the stop valve 8, the action of each air cylinder 5 is controlled by an electromagnetic reversing valve 3 correspondingly, the power air source of each air cylinder 5 is from a high-pressure air storage tank 1, and the exhaust of each air cylinder 5 is discharged to a low-pressure air storage tank 15.
The pneumatic cylinder 5 is internally provided with a spring 7 so as to realize that the air bag 10 is in an opening or closing state under the combined action of the spring force in the pneumatic cylinder 5 and the gas force in the air cylinder of the compressor.
The clearance cylinder 9 is internally provided with a plurality of air bags 10 which are separated and arranged in parallel.
The working mode is as follows: as shown in fig. 1, since the reciprocating compressor is operated, the pressure in the compressor cylinder 11 is varied according to 4 processes of suction, compression, discharge and expansion of the compressor. When the compressor is in a compression or exhaust process and the pressure in the air cylinder 11 is higher than the pressure of the high-pressure air storage tank 1, part of air in the air cylinder 11 of the compressor enters the high-pressure air storage tank 1 through the through hole 12 formed in the clearance cylinder 5 of the multi-air bag and then passes through the air inlet check valve, and when the pressure of the air in the air cylinder 11 of the compressor is lower than the pressure of the high-pressure air storage tank 1, the air in the high-pressure air storage tank 1 cannot flow back into the air cylinder 11 due to the one-way action of the check valve 2, the pressure in the high-pressure air storage tank 1 is close to the exhaust pressure Pd in the air cylinder 11 of the. When the compressor expands or inhales air and the pressure in the air cylinder is lower than the pressure of the low-pressure air storage tank 15, the air in the low-pressure air storage tank 15 passes through the exhaust check valve 14 and enters the compressor air cylinder 11 after passing through the through hole 13 arranged on the clearance cylinder 5 with multiple air bags, due to the one-way action of the exhaust check valve 14, the compressor air cylinder 11 cannot reversely flow back into the low-pressure air storage tank 15, the pressure of the air in the low-pressure air storage tank 15 is close to the intake pressure Ps in the compressor air cylinder, and the air is taken as an exhaust channel of each. The valve position of a certain electromagnetic directional valve 3 is controlled through a PLC or a DCS, the cavity A of the pneumatic cylinder 5 is controlled to be communicated with high-pressure gas of the high-pressure gas storage tank 1 or communicated with the low-pressure gas storage tank 15, and therefore the stop valve of the corresponding air bag 10 is controlled to be closed or opened. The clearance volume of the connected cylinder can be controlled by controlling the combination of opening or closing the air bags 10 with different volumes, so as to achieve the purpose of controlling the air quantity of the compressor.
In embodiment 1, the plurality of air bags are three air bags, the electromagnetic directional valves 3 corresponding to the first air bag 10 and the second air bag 10 are located at the positions where the port P and the port a are communicated, the cavity a of the corresponding pneumatic cylinder 5 is communicated with the high-pressure air storage tank 1, the cavity B is communicated with the low-pressure air storage tank 15, the gas pressure of the cavity a is close to the exhaust pressure Pd in the compressor cylinder, the gas pressure of the cavity B is close to the suction pressure Ps in the compressor cylinder, and the first air bag 10 and the second air bag 10 are in a closed state under the action of the pressure difference between the exhaust pressure Pd and the suction pressure Ps due to the fact that the exhaust pressure Pd in the compressor cylinder 11 is greater than the suction pressure Ps of the pneumatic cylinder;
the valve position of the electromagnetic directional valve 3 corresponding to the third air bag 10 is at the conduction position of the port T and the port A, the cavity A and the cavity B of the corresponding pneumatic cylinder 5 are both communicated with the low-pressure air storage tank 15, the gas pressure of the cavity A and the cavity B is close to the suction pressure Ps in the compressor cylinder, and the air bag 10 is in an open state under the combined action of the spring force in the pneumatic cylinder 5 and the gas force in the compressor cylinder by the pneumatic cylinder 5.
Claims (10)
1. The self-operated pneumatic multi-airbag clearance adjusting system of the reciprocating compressor comprises a compressor cylinder (11) and is characterized by also comprising a multi-airbag clearance cylinder, a plurality of pneumatic cylinders (5), a plurality of stop valves (8) and a self-operated clearance adjusting control system,
the clearance cylinder with multiple air bags consists of a clearance cylinder body (9), a clearance cylinder cover (4) arranged at one end part of the clearance cylinder body (9) and a plurality of air bags (10) arranged in the clearance cylinder body (9), the other end part of the clearance cylinder body (9) is arranged on the cover side of an air cylinder (11) of the compressor, the air bags (10) are respectively provided with a corresponding stop valve (8), each stop valve (8) is positioned between the corresponding air bag (10) and the air cylinder (11) of the compressor, each stop valve (8) is provided with a corresponding pneumatic cylinder (5), the pneumatic cylinders (5) are arranged on the clearance cylinder cover (4) and drive the corresponding stop valves (8) to move through the pneumatic cylinders (5) so as to realize the communication or the closing of the control air bags (10) and the air cylinder (11) of the compressor,
the self-operated clearance adjusting and controlling system comprises an air inlet one-way valve (2), a high-pressure air storage tank (1), a low-pressure air storage tank (15), an exhaust one-way valve (14) and an electromagnetic directional valve (3),
the clearance cylinder body (9) and the clearance cylinder cover (4) of the clearance cylinder with multiple airbags are provided with a first vent hole (12) and a second vent hole (13) which are communicated, the inlet of the first vent hole (12) and the outlet of the second vent hole (13) are communicated with the cylinder (11) of the compressor,
the outlet of the first vent hole (12) is communicated with the high-pressure air storage tank (1), an air inlet one-way valve (2) is arranged between the outlet of the first vent hole (12) and the high-pressure air storage tank (1), the high-pressure air storage tank (1) is communicated with the interfaces P of the plurality of electromagnetic directional valves (3),
the inlet of the second vent hole (13) is communicated with a low-pressure air storage tank (15), an exhaust one-way valve (14) is arranged between the inlet of the second vent hole (13) and the low-pressure air storage tank (15), the low-pressure air storage tank (15) is communicated with the interfaces T of the plurality of electromagnetic directional valves (3) and the cavities B of the plurality of pneumatic cylinders (5),
the interfaces A of the electromagnetic directional valves (3) are communicated with the cavities A of the corresponding pneumatic cylinders (5).
2. The reciprocating compressor self-operated pneumatic multi-airbag clearance adjusting system as claimed in claim 1, wherein an air inlet channel is formed between the high-pressure air storage tank (1), the air inlet check valve (2), the first vent hole (12) and the compressor cylinder (11).
3. The reciprocating compressor self-operated pneumatic multi-airbag clearance adjustment system as claimed in claim 1, wherein an air outlet channel is formed between the low-pressure air storage tank (15), the exhaust check valve (14), the second vent hole (13) and the compressor cylinder (11).
4. The reciprocating compressor self-operated pneumatic multi-airbag clearance adjustment system as claimed in claim 2, wherein the pressure of the gas in the high-pressure gas storage tank (1) is less than or equal to the discharge pressure in the compressor cylinder (11).
5. A reciprocating compressor self-operated pneumatic multi-air bag clearance adjustment system according to claim 3, wherein the pressure of the gas in the low pressure gas reservoir (15) is greater than or equal to the inlet pressure in the compressor cylinder (11).
6. The reciprocating compressor self-operated pneumatic multi-air bag clearance adjusting system according to claim 1, wherein a plurality of air bags (10) with the same or different volumes are installed or separated in the clearance cylinder, the air bags (10) are not communicated with each other directly, and the air bags (10) control the communication or the closing of the air bags (10) and the compressor cylinder (11) through corresponding pneumatic cylinders (5).
7. The self-operated pneumatic multi-air bag clearance adjusting system of the reciprocating compressor as claimed in claim 1, wherein the pneumatic cylinder (5) is a single-acting cylinder, the cavity A of the pneumatic cylinder (5) is connected with the interface A of the electromagnetic directional valve (3), and the cavity B is communicated with the low-pressure air storage tank (15).
8. The self-operated pneumatic multi-air bag clearance adjusting system of the reciprocating compressor as claimed in claim 1, wherein a stop valve (8) and an air cylinder (5) are respectively arranged on each air bag (10) of the multi-air bag clearance cylinder (5), each air cylinder (5) controls the opening or closing of the stop valve (8), the action of each air cylinder (5) is controlled by a solenoid directional valve (3), the power air source of each air cylinder (5) is from a high-pressure air storage tank (1), and the exhaust air of each air cylinder (5) is discharged to a low-pressure air storage tank (15).
9. The self-operated pneumatic multi-airbag clearance adjusting system of the reciprocating compressor as recited in claim 1, wherein a spring (7) is arranged in the pneumatic cylinder (5) to realize that the airbag (10) is in an opening or closing state under the combined action of the spring force in the pneumatic cylinder (5) and the gas force in the compressor cylinder.
10. The reciprocating compressor self-operated pneumatic multi-airbag clearance adjustment system as claimed in claim 1, wherein a plurality of airbags (10) are installed and separated in the clearance cylinder (9), and the airbags (10) are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910365749.9A CN111894843A (en) | 2019-05-05 | 2019-05-05 | Self-operated pneumatic multi-air-bag clearance adjusting system of reciprocating compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910365749.9A CN111894843A (en) | 2019-05-05 | 2019-05-05 | Self-operated pneumatic multi-air-bag clearance adjusting system of reciprocating compressor |
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| CN111894843A true CN111894843A (en) | 2020-11-06 |
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| CN201910365749.9A Pending CN111894843A (en) | 2019-05-05 | 2019-05-05 | Self-operated pneumatic multi-air-bag clearance adjusting system of reciprocating compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112619353A (en) * | 2020-12-23 | 2021-04-09 | 重庆嘉肯科技有限公司 | Odor treatment device for petrochemical industry |
-
2019
- 2019-05-05 CN CN201910365749.9A patent/CN111894843A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112619353A (en) * | 2020-12-23 | 2021-04-09 | 重庆嘉肯科技有限公司 | Odor treatment device for petrochemical industry |
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