CN112112790B - Control system and method for automatic start and stop of piston compressor - Google Patents
Control system and method for automatic start and stop of piston compressor Download PDFInfo
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- CN112112790B CN112112790B CN202010990538.7A CN202010990538A CN112112790B CN 112112790 B CN112112790 B CN 112112790B CN 202010990538 A CN202010990538 A CN 202010990538A CN 112112790 B CN112112790 B CN 112112790B
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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
- F04B49/06—Control using electricity
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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
- F04B49/10—Other safety measures
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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
- F04B49/22—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 means of valves
- F04B49/225—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 means of valves with throttling valves or valves varying the pump inlet opening or the outlet opening
Abstract
A control system and method for automatically starting and stopping a piston compressor can directly control the starting operation of the compressor unit, the replacement operation of an A/B machine and the stopping operation of the compressor unit in a central control room by adding a corresponding automatic control valve and an instrument on the compressor of the compressor unit, greatly reduce the operation requirement on the operation of the compressor unit and greatly improve the production efficiency; the invention has the advantages of meeting the requirement of automatically starting and stopping the running of the compressor, clearly displaying the running state of the unit in a system of a central control room, and enabling a user to better understand and master the capacity and the state of the unit.
Description
Technical Field
The invention relates to the field of compressors, in particular to a control system and method for automatically starting and stopping a piston compressor.
Background
A piston compressor is a compressor that pressurizes and delivers gas by means of reciprocating movement of a piston. Belongs to a displacement compressor, also known as a reciprocating piston compressor or a reciprocating compressor. Mainly comprises a working cavity, a transmission component, a machine body and an auxiliary component. The working cavity is directly used for compressing gas and consists of a cylinder, a cylinder sleeve, an air valve, a filler, a piston and a piston rod. The piston is driven by the piston rod to do reciprocating motion in the cylinder, the volumes of the working cavities on the two sides of the piston are changed in turn, gas on one side with reduced volume is exhausted through the gas valve due to increased pressure, gas on one side with increased volume is sucked through the gas valve due to reduced pressure, and the transmission part is used for realizing reciprocating motion. The prior art compressor for the process needs to be operated on the site of a unit to ensure the use safety of the unit when being started or stopped, needs to consume great manpower and material resources, and has high maintenance cost.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a control system and a method for automatically starting and stopping a piston compressor, which directly control the starting operation of a compressor unit, the replacement operation of an A/B machine and the stopping operation of the compressor unit in a central control room, greatly reduce the operation requirement on the operation of the compressor unit and greatly improve the production efficiency.
The invention adopts the technical scheme for solving the technical problems that: a control system for automatically starting and stopping a piston compressor comprises the compressor and a central control room console for controlling the operation of the compressor, wherein the compressor comprises a main oil pump motor, a main oil pump, a main motor, a last return regulating valve, a process gas inlet valve, a process gas outlet valve, a shaft side electromagnetic valve and a cover side electromagnetic valve;
the starting button is used for starting and closing a main oil pump motor, the starting button is connected with the main oil pump motor, the main oil pump motor is connected with a main oil pump, a main oil pump motor emergency stop button is arranged on the main oil pump motor, a main oil pump motor emergency stop button sensor is arranged on the main oil pump motor emergency stop button, an oil supply pressure sensor and an oil supply temperature sensor are respectively arranged on the main oil pump, a main motor emergency stop button is arranged on the main motor, and a main motor emergency stop button sensor is arranged on the main motor emergency stop button;
the control module is used for controlling the opening and closing of the main motor, the last-return regulating valve, the process gas inlet valve, the process gas outlet valve, the shaft side electromagnetic valve and the cover side electromagnetic valve are all provided with valve sensors and pneumatic actuators, the valve sensors are used for detecting the opening degree condition of the valves and transmitting data to the analysis early warning module for integration and processing, and the pneumatic actuators are electrically connected to the control module; the pneumatic actuator can control the opening of each valve.
The analysis early warning module is used for acquiring data of each sensor, displaying the opening degree of each valve channel, analyzing and judging the data, and pushing early warning information to the control module, wherein the main oil pump motor emergency stop button sensor, the oil supply pressure sensor, the oil supply temperature sensor, the main motor emergency stop button sensor and the valve sensor are all electrically connected to the analysis early warning module.
Further perfection, a delay switch is arranged on the last-return regulating valve.
Further perfection, be equipped with X axle direction vibration sensor and Y axle direction vibration sensor on the fuselage of compressor, set up three lubricating oil pressure sensor in the fuselage oil line of compressor, X axle direction vibration sensor, Y axle direction vibration sensor and lubricating oil pressure sensor all are connected to on the analysis early warning module by the electricity.
A control method for automatic start and stop of a piston compressor comprises the following steps:
step 1, pressing a starting switch on a control detection system of a central control room console by a worker, controlling the detection system to monitor whether an emergency stop button of a main oil pump motor does not work, if so, electrifying the main oil pump motor, starting the main oil pump to work, and entering step 2, otherwise, arranging the worker to go to the site for maintenance, and then unlocking the emergency stop button of the main oil pump motor;
step 2, opening the last adjusting valve to 100%, closing the process gas inlet valve and the process gas outlet valve, and disconnecting the power supplies of the shaft side electromagnetic valve and the cover side electromagnetic valve;
step 3, the control detection system collects data of oil supply temperature, oil supply pressure, opening degree of a last-return regulating valve, working state of a main motor emergency stop button and opening and closing states of a process gas inlet valve and a process gas outlet valve through sensors arranged on a compressor and transmits the data to a central control room console, the control detection system of the central control room console judges whether the conditions that the oil supply temperature is more than or equal to 10 ℃, the oil supply pressure is more than or equal to 250KPa, the last-return regulating valve state is 100%, the main motor emergency stop button does not act, the process gas inlet valve is closed in place and the process gas outlet valve is closed in place are met at the same time, if yes, the main motor is started, and the step 4 is carried out, otherwise, the sensors continue to monitor the data;
step 4, controlling the detection system to send out a signal, controlling the main motor to run for 30S, enabling the compressor piston to run stably, fully starting the main motor, and then opening the process gas inlet valve and the process gas outlet valve;
step 5, monitoring whether the process gas inlet valve and the process gas outlet valve are opened in place, if so, closing power supplies of the shaft side electromagnetic valve and the cover side electromagnetic valve, and then entering step 6; otherwise, the states of the process gas inlet valve and the process gas outlet valve are continuously monitored until the process gas inlet valve and the process gas outlet valve are opened in place; the valves are opened in sequence, so that damage to a compressor unit is avoided;
step 6, a delay 15S is carried out to close the last-return regulating valve to finish the starting of the compressor, the process gas inlet and outlet valves control the inlet and outlet channels of the unit, a certain time difference is probably generated in the specific switching time, the last-return regulating valve has the delay function of returning the gas at the outlet to a part of inlet to stabilize the pressure of the inlet or the outlet, and the delayed closing can protect the unit or the auxiliary valves;
step 7, judging whether two of three oil pressure sensors arranged on an oil pipeline entering the machine body detect that the pressure of lubricating oil is less than or equal to 150KPa, judging whether the vibration X of the machine body is greater than or equal to 18mm/S, judging whether the vibration Y of the machine body is greater than or equal to 18mm/S, and entering step 8 if the three conditions are met; otherwise, continuously monitoring whether the three conditions are met;
and 8, alarming and shutting down the main motor, closing the process gas inlet valve and the process gas outlet valve, disconnecting the power supplies of the shaft side electromagnetic valve and the cover side electromagnetic valve, and opening the last return regulating valve to 100 percent to complete the shutdown of the compressor.
Through predetermineeing a lot of temperature, pressure sensor in the body of compressor and auxiliary assembly, then will upload the control detecting system of center control system with these signals, also have the sensor that can show valve way aperture size in each control flap, the start-stop signal of each motor also can be uploaded, these information all can be gathered finally in the control detecting system, control detecting system handles and integrates these signals, judge compressor running state, then send and open and stop the signal, the automatic start-stop that realizes the compressor is started through the aperture that opens and stops motor and pneumatic actuator control each valve.
To further improve, the last-return regulating valve in step 6 is closed within 5S, closing 20% per second.
The invention has the beneficial effects that: according to the invention, the corresponding automatic control valve and the corresponding instrument are added on the large-scale process compressor of the unit, so that the starting operation of the compressor unit, the replacement operation of the A/B machine and the stopping operation of the unit can be directly controlled in the central control room, the operation requirement on the unit operation is greatly reduced, and the production efficiency is greatly improved; the invention has the advantages of meeting the requirement of automatically starting and stopping the running of the compressor, clearly displaying the running state of the unit in a system of a central control room, and enabling a user to better understand and master the capacity and the state of the unit.
Drawings
FIG. 1 is a schematic flow chart illustrating a control method according to the present embodiment;
FIG. 2 is a schematic structural diagram of a control system according to the present embodiment;
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
with reference to the accompanying drawings: according to the control system and the method for automatically starting and stopping the piston compressor, the starting operation of the compressor unit, the replacement operation of the A/B machine and the stopping operation of the compressor unit are directly controlled in the central control room, the operation requirement on the operation of the compressor unit is greatly reduced, and the production efficiency is greatly improved.
The invention adopts the technical scheme for solving the technical problems that: a control system for automatically starting and stopping a piston compressor comprises the compressor and a central control room console for controlling the operation of the compressor, wherein the compressor comprises a main oil pump motor, a main oil pump, a main motor, a last return regulating valve, a process gas inlet valve, a process gas outlet valve, a shaft side electromagnetic valve and a cover side electromagnetic valve;
the starting button is used for starting and closing a main oil pump motor, the starting button is connected with the main oil pump motor, the main oil pump motor is connected with a main oil pump, a main oil pump motor emergency stop button is arranged on the main oil pump motor, a main oil pump motor emergency stop button sensor is arranged on the main oil pump motor emergency stop button, an oil supply pressure sensor and an oil supply temperature sensor are respectively arranged on the main oil pump, a main motor emergency stop button is arranged on the main motor, and a main motor emergency stop button sensor is arranged on the main motor emergency stop button;
the control module is used for controlling the opening and closing of the main motor, the last-return regulating valve, the process gas inlet valve, the process gas outlet valve, the shaft-side electromagnetic valve and the cover-side electromagnetic valve are all provided with a valve sensor and a pneumatic actuator, and the pneumatic actuator is electrically connected to the control module;
the analysis early warning module is used for acquiring data of each sensor, displaying the opening degree of each valve channel, analyzing and judging the data, and pushing early warning information to the control module, wherein the main oil pump motor emergency stop button sensor, the oil supply pressure sensor, the oil supply temperature sensor, the main motor emergency stop button sensor and the valve sensor are all electrically connected to the analysis early warning module.
And a delay switch is arranged on the last return regulating valve.
The machine body of the compressor is provided with an X-axis direction vibration sensor and a Y-axis direction vibration sensor, three lubricating oil pressure sensors are arranged in an oil pipeline of the machine body of the compressor, and the X-axis direction vibration sensor, the Y-axis direction vibration sensor and the lubricating oil pressure sensors are all electrically connected to the analysis early warning module.
The working principle of the automatic start-stop system is as follows: a plurality of temperature and pressure sensors are preset in the body and auxiliary equipment of the compressor. The signals are uploaded to a control detection system, each control valve is also provided with a sensor capable of displaying the opening degree of the valve channel, and start and stop signals of each motor are also uploaded. The information is finally gathered into a control detection system, and the signals are processed and integrated. Then a signal is sent out, and the automatic start and stop of the compressor are realized through a control valve and a start and stop motor.
According to the invention, the corresponding automatic control valve and the corresponding instrument are added in the unit, so that the running of the compressor can be automatically started and stopped, and the running state of the unit can be clearly displayed in the central control system, so that a user can better know and master the capacity and the state of the unit. The technical scheme of the invention has excellent applicability, can be suitable for most of technical compressors, and plays a key role in intellectualization and datamation of the unit.
A control method for automatic start and stop of a piston compressor comprises the following steps:
step 1, pressing a starting switch on a control detection system of a central control room console by a worker, controlling the detection system to monitor whether an emergency stop button of a main oil pump motor does not work, if so, electrifying the main oil pump motor, starting the main oil pump to work, and entering step 2, otherwise, arranging the worker to go to the site for maintenance, and then unlocking the emergency stop button of the main oil pump motor;
step 2, opening the last adjusting valve to 100%, closing the process gas inlet valve and the process gas outlet valve, and disconnecting the power supplies of the shaft side electromagnetic valve and the cover side electromagnetic valve;
step 3, the control detection system collects data of oil supply temperature, oil supply pressure, opening degree of a last-return regulating valve, working state of a main motor emergency stop button and opening and closing states of a process gas inlet valve and a process gas outlet valve through sensors arranged on a compressor and transmits the data to a central control room console, the control detection system of the central control room console judges whether the conditions that the oil supply temperature is more than or equal to 10 ℃, the oil supply pressure is more than or equal to 250KPa, the last-return regulating valve state is 100%, the main motor emergency stop button does not act, the process gas inlet valve is closed in place and the process gas outlet valve is closed in place are met at the same time, if yes, the main motor is started, and the step 4 is carried out, otherwise, the sensors continue to monitor the data;
step 4, controlling the detection system to send out a signal, controlling the main motor to run for 30S, and then opening a process gas inlet valve and a process gas outlet valve;
step 5, monitoring whether the process gas inlet valve and the process gas outlet valve are opened in place, if so, closing power supplies of the shaft side electromagnetic valve and the cover side electromagnetic valve, and then entering step 6; otherwise, the states of the process gas inlet valve and the process gas outlet valve are continuously monitored until the process gas inlet valve and the process gas outlet valve are opened in place;
step 6, delaying 15S to close a last-return regulating valve to finish the starting of the compressor, wherein the last-return regulating valve is closed within 5S and is closed by 20% per second;
step 7, judging whether two of three oil pressure sensors arranged on an oil pipeline entering the machine body detect that the pressure of lubricating oil is less than or equal to 150KPa, judging whether the vibration X of the machine body is greater than or equal to 18mm/S, judging whether the vibration Y of the machine body is greater than or equal to 18mm/S, and entering step 8 if the three conditions are met; otherwise, continuously monitoring whether the three conditions are met;
and 8, alarming and shutting down the main motor, closing the process gas inlet valve and the process gas outlet valve, disconnecting the power supplies of the shaft side electromagnetic valve and the cover side electromagnetic valve, and opening the last return regulating valve to 100 percent to complete the shutdown of the compressor.
While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.
Claims (5)
1. The utility model provides a control system that automatic start-stop of piston compressor, characterized by: the system comprises a compressor and a central control room console for controlling the operation of the compressor, wherein the compressor comprises a main oil pump motor, a main oil pump, a main motor, a last return regulating valve, a process gas inlet valve, a process gas outlet valve, a shaft side electromagnetic valve and a cover side electromagnetic valve;
the starting button is used for starting and closing a main oil pump motor, the starting button is connected with the main oil pump motor, the main oil pump motor is connected with a main oil pump, a main oil pump motor emergency stop button is arranged on the main oil pump motor, a main oil pump motor emergency stop button sensor is arranged on the main oil pump motor emergency stop button, an oil supply pressure sensor and an oil supply temperature sensor are respectively arranged on the main oil pump, a main motor emergency stop button is arranged on the main motor, and a main motor emergency stop button sensor is arranged on the main motor emergency stop button;
the control module is used for controlling the opening and closing of the main motor, the last-return regulating valve, the process gas inlet valve, the process gas outlet valve, the shaft-side electromagnetic valve and the cover-side electromagnetic valve are all provided with a valve sensor and a pneumatic actuator, and the pneumatic actuator is electrically connected to the control module;
the analysis early warning module is used for acquiring data of each sensor, displaying the opening degree of each valve channel, analyzing and judging the data, and pushing early warning information to the control module, wherein the main oil pump motor emergency stop button sensor, the oil supply pressure sensor, the oil supply temperature sensor, the main motor emergency stop button sensor and the valve sensor are all electrically connected to the analysis early warning module.
2. The piston compressor automatic start-stop control system as claimed in claim 1, wherein: and a delay switch is arranged on the last return regulating valve.
3. The piston compressor automatic start-stop control system as claimed in claim 2, wherein: the machine body of the compressor is provided with an X-axis direction vibration sensor and a Y-axis direction vibration sensor, three lubricating oil pressure sensors are arranged in an oil pipeline of the machine body of the compressor, and the X-axis direction vibration sensor, the Y-axis direction vibration sensor and the lubricating oil pressure sensors are all electrically connected to the analysis early warning module.
4. A control method for automatic start-stop of a piston compressor, which is applied to the control system for automatic start-stop of the piston compressor in claim 3, is characterized by comprising the following steps:
step 1, pressing a starting switch on a control detection system in a console of a central control room by a worker, monitoring whether an emergency stop button of a main oil pump motor does not work by the control detection system, if so, electrifying the main oil pump motor, starting the main oil pump to work, entering step 2, otherwise, arranging the worker to go to on-site maintenance, and unlocking the emergency stop button of the main oil pump motor;
step 2, opening the last adjusting valve to 100%, closing the process gas inlet valve and the process gas outlet valve, and disconnecting the power supplies of the shaft side electromagnetic valve and the cover side electromagnetic valve;
step 3, the control detection system collects data of oil supply temperature, oil supply pressure, opening degree of a last-return regulating valve, working state of a main motor emergency stop button and opening and closing states of a process gas inlet valve and a process gas outlet valve through sensors arranged on a compressor and transmits the data to a central control room console, the control detection system judges whether the conditions that the oil supply temperature is more than or equal to 10 ℃, the oil supply pressure is more than or equal to 250KPa, the last-return regulating valve state is 100%, the main motor emergency stop button does not act, the process gas inlet valve is closed in place and the process gas outlet valve is closed in place are met at the same time, if yes, the main motor is started, and the step 4 is carried out, otherwise, the sensors continue to monitor the data;
step 4, controlling the detection system to send out a signal, controlling the main motor to run for 30S, and then opening a process gas inlet valve and a process gas outlet valve;
step 5, monitoring whether the process gas inlet valve and the process gas outlet valve are opened in place, if so, closing power supplies of the shaft side electromagnetic valve and the cover side electromagnetic valve, and then entering step 6; otherwise, the states of the process gas inlet valve and the process gas outlet valve are continuously monitored until the process gas inlet valve and the process gas outlet valve are opened in place;
step 6, the last regulating valve is closed after a delay of 15S to finish the starting of the compressor,
step 7, judging whether two of three oil pressure sensors arranged on an oil pipeline entering the machine body detect that the pressure of lubricating oil is less than or equal to 150KPa, judging whether the vibration X of the machine body is greater than or equal to 18mm/S, judging whether the vibration Y of the machine body is greater than or equal to 18mm/S, and entering step 8 if the three conditions are met; otherwise, continuously monitoring whether the three conditions are met;
and 8, alarming and shutting down the main motor, closing the process gas inlet valve and the process gas outlet valve, disconnecting the power supplies of the shaft side electromagnetic valve and the cover side electromagnetic valve, and opening the last return regulating valve to 100 percent to complete the shutdown of the compressor.
5. The method for controlling the automatic start and stop of the piston compressor as claimed in claim 4, wherein the method comprises the following steps: the last-return regulating valve in step 6 is closed within 5S, 20% per second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010990538.7A CN112112790B (en) | 2020-09-19 | 2020-09-19 | Control system and method for automatic start and stop of piston compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010990538.7A CN112112790B (en) | 2020-09-19 | 2020-09-19 | Control system and method for automatic start and stop of piston compressor |
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| CN112112790A CN112112790A (en) | 2020-12-22 |
| CN112112790B true CN112112790B (en) | 2022-03-11 |
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| CN202010990538.7A Active CN112112790B (en) | 2020-09-19 | 2020-09-19 | Control system and method for automatic start and stop of piston compressor |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011007202A (en) * | 2010-10-12 | 2011-01-13 | Max Co Ltd | Air compressor |
| CN107762581A (en) * | 2017-11-29 | 2018-03-06 | 山西铁峰化工有限公司 | A kind of screw expansion generating set full-automatic control system and method |
-
2020
- 2020-09-19 CN CN202010990538.7A patent/CN112112790B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011007202A (en) * | 2010-10-12 | 2011-01-13 | Max Co Ltd | Air compressor |
| CN107762581A (en) * | 2017-11-29 | 2018-03-06 | 山西铁峰化工有限公司 | A kind of screw expansion generating set full-automatic control system and method |
Non-Patent Citations (1)
| Title |
|---|
| 天然气管道压气站一键启停站控制技术;王振声等;《投产与运行》;20190930;全文 * |
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