CN104500378A - Compressor starting control device - Google Patents
Compressor starting control device Download PDFInfo
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- CN104500378A CN104500378A CN201410829215.4A CN201410829215A CN104500378A CN 104500378 A CN104500378 A CN 104500378A CN 201410829215 A CN201410829215 A CN 201410829215A CN 104500378 A CN104500378 A CN 104500378A
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Abstract
The invention discloses a compressor starting control device which comprises a lubricating oil system control device, an air cold motor detection device, a valve control device, a high-pressure gate control device, a variable frequency motor control device and an anti-surge control device. By the adoption of the compressor starting control device, security starting of a compressor is achieved, a great deal of labor cost is reduced, mal-operation, operation time delay and the like caused by manual operation are avoided.
Description
Technical field
The present invention relates to technical field of industrial automatic control, particularly relate to compressor start control gear.
Background technique
Compressor is in application process, compressor body, electric motor units, dry gas seals system and electrical system etc. control all to adopt each unit independently to control manually or automatically, operation between each system is not closely linked with site technique sometimes, cause each system can not give full play to its advantage, each system can not be worked under the optimal condition.Each system all needs people and carries out on duty, carries out real-time manually-operable, wastes a large amount of manpower, and when normal operation, the safety of each system unit of entail dangers to is gone back in operation not in time.
In prior art, during unit starting, be manually-operable start-up course by people usually, once operate miss appears in certain link, compressor will be caused normally not start.Unit, in stopping process, is also that operate miss can cause system or each unit to occur degree of impairment by people for carrying out each valve of system and electric unit control.
Summary of the invention
The invention provides compressor start control gear, solving unit starting in prior art needs people to be that manually-operable starts, and easily causes operate miss, and the technical problem that human cost is too high.
The object of the invention is to be achieved through the following technical solutions:
A kind of compressor start control gear, comprising:
Lubricating oil system control gear, for according to lubricating oil system Control timing sequence, makes the oil pump in lubricating oil system enter normal state, and wherein, described oil pump comprises two mutually redundant oil pumps and 4 standby mutually between two jacking(oil) pumps;
Ventilated machine detection device, for when the oil pump in described lubricating oil system enters normal state, starts ventilated machine;
Valve control device, after starting when described ventilated machine work, starter gate valve gate control sequential, to control external air source valve, inlet valve, outlet valve, charge valve, separating valve and atmospheric valve;
High pressure brake control device, for when after closedown charge valve, carries out conjunction high pressure lock and controls;
Frequency motor control apparatus, for controlling successfully when conjunction high pressure lock, runs high-voltage frequency-changing motor; After described high-voltage frequency-changing motor normally runs, regulable control is carried out to the rotating speed of described high-voltage frequency-changing motor, to make compressor operating at optimum state;
Anti-surge control device, for closing Anti-surge Control valve, enters normal working to make compressor.
Provide compressor start control gear in the embodiment of the present invention, according to lubricating oil system Control timing sequence, make the oil pump in lubricating oil system enter normal state; When the oil pump in described lubricating oil system enters normal state, start ventilated machine; After described ventilated machine work starts, starter gate valve gate control sequential, to control inlet valve, outlet valve, charge valve, separating valve and atmospheric valve; When after closedown charge valve, carry out conjunction high pressure lock and control; When conjunction high pressure lock controls successfully, run high-voltage frequency-changing motor; After described high-voltage frequency-changing motor normally runs, regulable control is carried out to the rotating speed of described high-voltage frequency-changing motor, to make compressor operating at optimum state; Close Anti-surge Control valve, enter normal working to make compressor.By the technological scheme of the embodiment of the present invention, achieve the clean boot of compressor, and save a large amount of human cost, evade misoperation, operation delay etc. that manual operation brings.
Accompanying drawing explanation
A kind of compressor start control gear schematic diagram that Fig. 1 provides for the embodiment of the present invention.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
The embodiment of the present invention is in conjunction with the control overflow of each system unit of compressor (compressor body, electric motor units, dry gas seals system and electrical system etc.) and feature, the control logic of system is set, realize the controlling functions of one-touch clean boot compressor, as shown in Figure 1, a kind of compressor start control gear that the embodiment of the present invention provides, comprising:
Lubricating oil system control gear 210, for according to lubricating oil system Control timing sequence, makes the oil pump in lubricating oil system enter normal state, and wherein, described oil pump comprises two mutually redundant oil pumps and 4 standby mutually between two jacking(oil) pumps;
Ventilated machine detection device 220, for when the oil pump in described lubricating oil system enters normal state, starts ventilated machine; Wherein, because the high-power high voltage variable-frequency motor run up can make the intensification of high-voltage frequency-changing motor body very fast in operation process, be unfavorable for high-voltage frequency-changing machine operation like this, so have two ventilated machines respectively at the drive end of high-voltage frequency-changing motor and anti-drive end.After jacking(oil) pump detects normal work, start four ventilated machines simultaneously.In stopping process, 20 minutes after high-voltage frequency-changing motor shuts down, then stop the running of four ventilated machines.
Valve control device 230, after starting when described ventilated machine work, starter gate valve gate control sequential, to control external air source valve, inlet valve, outlet valve, charge valve, separating valve and atmospheric valve.Wherein, Valve controlling sequential refers to and controls external air source valve, inlet valve, outlet valve, charge valve, separating valve and atmospheric valve; Compressor plant field, from the gas of upstream station field, enters our station field by total valve, as long as the compressor of our station field needs to start, total valve needs to be in open mode all the time, otherwise is in closed condition.Gas is incorporated into suction port of compressor by total header, and gas has 2 valves before entering suction port of compressor, is respectively bigbore inlet valve and small-bore charge valve, and these two valves are placed on the pipeline of suction port of compressor side by side; Also have two valves in the outlet of compressor, be respectively bigbore outlet valve and small-bore atmospheric valve, these two valves are arranged on the outlet line of compressor side by side.High pressure brake control device 240, for when after closedown charge valve, carries out conjunction high pressure lock and controls; Wherein, after successfully closing charge valve, sent by PLC and close the order of high pressure lock, if control system can not receive combined floodgate success command from frequency variator there in 150 seconds, then send orderly closedown order.If close a floodgate successfully, then control system can receive the ready order of frequency variator.
Frequency motor control apparatus 250, for controlling successfully when conjunction high pressure lock, runs high-voltage frequency-changing motor; After described high-voltage frequency-changing motor normally runs, regulable control is carried out to the rotating speed of described high-voltage frequency-changing motor, to make compressor operating at optimum state.
Anti-surge control device 260, for closing Anti-surge Control valve, enters normal working to make compressor.Wherein, Anti-surge Control valve is positioned at compressor outlet and header place, suction port of compressor.
Wherein, valve control device 230 comprises the first valve control module 231, second valve control module 232, the 3rd valve control module 233, the 4th valve control module 234 and the 5th valve control module 235.First valve control module 231, for opening the external air source valve of dry gas seals system.Wherein, dry gas seals system mainly prevents compressor cavity gas from leaking outside, and jeopardizes environment and personal safety.After crawl start button, the external air source valve of dry gas seals starts to open, and also has an adjustable valve, be generally set in 250KPa, after startup, can regulate in real time according to dry gas seals pressure size before entering dry gas seals cavity.After the high-voltage frequency-changing motor of compressor reaches minimum working speed, compressor outlet bleed air pressure is to meet the requirement of dry gas seals system fading margin, for preventing gas leak, external air source valve cuts out, and only needs to carry out automatic regulating guarantee dry gas seals system worked well before from compressor outlet bleed to adjustable valve.Second valve control module 232, for opening the described charge valve of compressor and described separating valve; 3rd valve control module 233, for opening atmospheric valve, carries out the gas displacement of compressor cavity, and detects suction port of compressor whether concora crush; 4th valve control module 234, for when after the concora crush of suction port of compressor, closes described atmospheric valve, and opens described inlet valve and described outlet valve, to carry out compressor load adjustment; Wherein, inlet valve and outlet valve are two of paramount importance valves; once control badly may cause catastrophic failure; the opening and closing of these two valves need the time of about 180 seconds under normal circumstances; if do not receive standard-sized sheet and complete shut-down signal in scheduled time; then must send pressurize halt command at once, then enter strategy of withdrawing and staning on the defensive.5th valve control module 235, for closing described charge valve, controls to carry out conjunction high pressure lock.
Lubricating oil system control gear 210 comprises pump start module 211 and jacking(oil) pump starts module 212.Pump start module 211, whether for starting emergency bearing oil pump, and it is normal to detect oil pressure index; Namely need to detect emergency bearing oil pump whether can run well, if startup command send rear emergency bearing oil pump cannot start or start after lubrication pressure index not up to standard, emergency bearing oil pump existing problems are then described, then start startup to withdraw and stand on the defensive strategy, strategy of withdrawing and staning on the defensive is checked and maintenance for maintenance man carries out scene, if can keep in repair within 1 hour, then can proceed to open, also do not keep in repair successfully if exceed schedule time, then program is got back to initial initial position and is waited for that again pressing start button just can open.When described oil pressure index is normal, stop described emergency bearing oil pump, and start primary oil pump, and whether detect oil pressure index normal; Once it is abnormal to detect oil pressure index, then enter strategy of withdrawing and staning on the defensive.Jacking(oil) pump starts module 212, if normal for described oil pressure index, start for subsequent use group of jacking(oil) pump, whether the oil-feed flow detecting compressor whether normal and oil pressure switch puts in place, each cornerwise 2 jacking(oil) pumps of described 4 jacking(oil) pumps are divided into one group, are respectively for subsequent use group of jacking(oil) pump and primary group of jacking(oil) pump; When the oil-feed flow of compressor is normal and oil pressure switch puts in place, stops described for subsequent use group of jacking(oil) pump, start described primary group of jacking(oil) pump, enter normal state to make oil pump.Wherein, after oil pump enters normal state, can also control the oil heater of lubricating oil system, deaerator and oily air cooling device in the embodiment of the present invention, to guarantee that starting rear compressor still can normally run, such as when lubricant oil is lower than 5 DEG C of startup heaters, automatically stop heater higher than when 37 DEG C.When after pump start, deaerator is just opened automatically, and oil pump stops, and deaerator stops automatically, utilizes Oil-gas Separation apparatus the mist of oil that lubricating oil is formed can be carried out being separated into oil droplet and recycles.When detecting that the temperature after oily air cooling device stops variable-frequency motor higher than when 43 DEG C, detecting that oil temperature starts variable-frequency motor automatically lower than when 37 DEG C.After variable-frequency motor is shut down, after oil pump needs maintenance running certain hour, then stop.
The compressor start control gear that the embodiment of the present invention provides also comprises magnetic valve controller 270, for at described lubricating oil system control gear according to lubricating oil system Control timing sequence, make before the oil pump in lubricating oil system enters normal state, controlling purge solenoid valve obtains electric, and purges machine cavity inside; When purging reaches Preset Time, and when described high-voltage frequency-changing motor is in leakage compensation pattern, enter compressor start state.
Frequency motor control apparatus 250 comprises Executive Module 251, warming-up control module 252 and regulable control module 253.
Executive Module 251, for controlling successfully when conjunction high pressure lock, runs high-voltage frequency-changing motor.Wherein, after high-voltage frequency-changing motor runs, also need to monitor 2 bear vibration in 4 bear vibration of high-voltage frequency-changing motor side bearing and 6 motor stator temperature signals and exciter and a bearing temperature signal.These signals are input to controller system respectively.Bear vibration all needs to send halt command, to protect the safety of compressor and high-voltage frequency-changing motor with bearing displacement and Bearing Temperature.Such as: when occurring that certain bear vibration is excessive; need to carry out emergency shutdown fast to unit; this process need carries out emergency action to valve according to prior prediction scheme, is first opened by Anti-surge Control valve, to be balanced by compressor inlet pressure; after high-voltage frequency-changing motor speed declines; inlet valve and outlet valve are closed, opens atmospheric valve, gas pressure in compressor cavity is reduced; to ensure that pressure can not be too high, just proceed to shut down.In practical application, shaft vibration signal is that two probes by being mutually 90 degree are input in 42 modules of Bentley vibration monitoring through extension cable and fore-lying device; Axial displacement signal is input in 42 modules of Bentley vibration monitoring through extension cable and fore-lying device by respectively installing a probe in the both sides of the half position of the amount of altering of current axis again; Bearing temperature signal, by on-the-spot Pt100 temperature transducer, is accessed in 65 modules of Bentley vibration monitoring by Surge Protector again.CPU inside can configuration become two to get two Concatenate shut-downs (carrying out the setting of interlocking value in 42 fasteners); that is CPU detects that two signals are all higher than 90um; then 33 modules will export switching value 0 signal to PLC system; shut down control to carry out pressurize, the judgement of axial displacement and bearing temperature and the mode decided by vote with oscillating signal similar.
Warming-up control module 252, for when described high-voltage frequency-changing motor reaches the first rotating speed and the second rotating speed respectively, carries out warming-up 30 minutes;
Regulable control module 253, for when described high-voltage frequency-changing motor automatic raising speed is to minimum working speed, carries out bunch grade adjustment control by total pipe network outlet pressure of described compressor, to make described compressor operating at optimum operating condition.Wherein, in exciter and the long-time out-of-operation situation of high-voltage frequency-changing motor, can make moist to exciter and high-voltage frequency-changing machine operation unfavorable, so their space heater just should be started after exciter and high-voltage frequency-changing motor stop, after exciter and high-voltage frequency-changing motor rotation, just stop the operation of their space heaters.
The compressor start control gear that the embodiment of the present invention provides also comprises shutdown control module, for the halt instruction that receiving control system sends, and performs described halt instruction, controls valve, and described halt instruction comprises pressurize shutdown and pressure release is shut down.
The Control timing sequence of valve, as follows:
First after compressor rotary speed lowers, inlet valve and outlet valve are closed, atmospheric valve is opened.Entrance charge valve and separating valve and export atmospheric valve; these three valves are when control system sends startup and shutdown command; if when first two valves can not feed back to standard-sized sheet and complete shut-down in 100 seconds or when the 3rd valve can not feed back to standard-sized sheet and complete shut-down in 20 seconds; then illustrate that the situation that can not normally work has appearred in valve; at this moment control program enters strategy of withdrawing and staning on the defensive; wherein, in stopping process, the control logic of valve is as shown in the table:
Provide compressor start control gear in the embodiment of the present invention, according to lubricating oil system Control timing sequence, make the oil pump in lubricating oil system enter normal state; When the oil pump in described lubricating oil system enters normal state, start ventilated machine; After described ventilated machine work starts, starter gate valve gate control sequential, to control inlet valve, outlet valve, charge valve, separating valve and atmospheric valve; When after closedown charge valve, carry out conjunction high pressure lock and control; When conjunction high pressure lock controls successfully, run high-voltage frequency-changing motor; After described high-voltage frequency-changing motor normally runs, regulable control is carried out to the rotating speed of described high-voltage frequency-changing motor, to make compressor operating at optimum state; Close Anti-surge Control valve, enter normal working to make compressor.By the technological scheme of the embodiment of the present invention, achieve the clean boot of compressor, and save a large amount of human cost, evade misoperation, operation delay etc. that manual operation brings.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required hardware platform by software and realize, can certainly all be implemented by hardware, but in a lot of situation, the former is better mode of execution.Based on such understanding, what technological scheme of the present invention contributed to background technique can embody with the form of software product in whole or in part, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform the method described in some part of each embodiment of the present invention or embodiment.
Above to invention has been detailed introduction, applying specific case herein and setting forth principle of the present invention and mode of execution, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (7)
1. a compressor start control gear, is characterized in that, comprising:
Lubricating oil system control gear, for according to lubricating oil system Control timing sequence, makes the oil pump in lubricating oil system enter normal state, and wherein, described oil pump comprises two mutually redundant oil pumps and 4 standby mutually between two jacking(oil) pumps;
Ventilated machine detection device, for when the oil pump in described lubricating oil system enters normal state, starts ventilated machine;
Valve control device, after starting when described ventilated machine work, starter gate valve gate control sequential, to control external air source valve, inlet valve, outlet valve, charge valve, separating valve and atmospheric valve;
High pressure brake control device, for when after closedown charge valve, carries out conjunction high pressure lock and controls;
Frequency motor control apparatus, for controlling successfully when conjunction high pressure lock, runs high-voltage frequency-changing motor; After described high-voltage frequency-changing motor normally runs, regulable control is carried out to the rotating speed of described high-voltage frequency-changing motor, to make compressor operating at optimum state;
Anti-surge control device, for closing Anti-surge Control valve, enters normal working to make compressor.
2. compressor start control gear according to claim 1, is characterized in that, described valve control device, comprising:
First valve control module, for opening the external air source valve of dry gas seals system;
Second valve control module, for opening the described charge valve of compressor and described separating valve;
3rd valve control module, for opening atmospheric valve, carries out the gas displacement of compressor cavity, and detects suction port of compressor whether concora crush;
4th valve control module, for when after the concora crush of suction port of compressor, closes described atmospheric valve, and opens described inlet valve and described outlet valve, to carry out compressor load adjustment;
5th valve control module, for closing described charge valve.
3. compressor start control gear according to claim 1, is characterized in that, described lubricating oil system control gear, comprising:
Pump start module, whether for starting emergency bearing oil pump, and it is normal to detect oil pressure index; When described oil pressure index is normal, stop described emergency bearing oil pump, and start primary oil pump, and whether detect oil pressure index normal;
Jacking(oil) pump starts module, if normal for described oil pressure index, start for subsequent use group of jacking(oil) pump, whether the oil-feed flow detecting compressor whether normal and oil pressure switch puts in place, each cornerwise 2 jacking(oil) pumps of described 4 jacking(oil) pumps are divided into one group, are respectively for subsequent use group of jacking(oil) pump and primary group of jacking(oil) pump; When the oil-feed flow of compressor is normal and oil pressure switch puts in place, stops described for subsequent use group of jacking(oil) pump, start described primary group of jacking(oil) pump, enter normal state to make oil pump.
4. compressor start control gear according to claim 1, is characterized in that, also comprise:
Magnetic valve controller, at described lubricating oil system control gear according to lubricating oil system Control timing sequence, make before the oil pump in lubricating oil system enters normal state, to control purge solenoid valve and obtain electric, and purge; When purging reaches Preset Time, and when described high-voltage frequency-changing motor is in leakage compensation pattern, enter compressor start state.
5. compressor start control gear according to claim 1, is characterized in that, described frequency motor control apparatus, comprising:
Executive Module, for controlling successfully when conjunction high pressure lock, runs high-voltage frequency-changing motor;
Warming-up control module, for when described high-voltage frequency-changing motor reaches the first rotating speed and the second rotating speed respectively, carries out warming-up 30 minutes;
Regulable control module, for when described high-voltage frequency-changing motor automatic raising speed is to minimum working speed, carries out bunch grade adjustment control by total pipe network outlet pressure of described compressor, to make described compressor operating at optimum operating condition.
6. the compressor start control gear according to any one of claim 1-5, is characterized in that, also comprise:
Shut down control module, for the halt instruction that receiving control system sends, and perform described halt instruction, described halt instruction comprises pressurize shutdown and pressure release is shut down; In described pressurize stopping process, the valve comprising charge valve, source of the gas valve, inlet valve, outlet valve, separating valve and Anti-surge Control valve is controlled; In described pressure release stopping process, the valve comprising inlet valve, outlet valve, separating valve, atmospheric valve and Anti-surge Control valve is controlled.
7. according to described compressor start control gear according to claim 6, it is characterized in that, described shutdown control module comprises:
Control module is shut down in pressurize, in pressurize stopping process, when motor speed Low threshold, opens charge valve, source of the gas valve and Anti-surge Control valve, closes inlet valve, outlet valve and separating valve;
Control module is shut down in pressure release, in pressure release stopping process, when motor speed Low threshold, closes inlet valve, outlet valve and separating valve, opens atmospheric valve and Anti-surge Control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410829215.4A CN104500378A (en) | 2014-12-26 | 2014-12-26 | Compressor starting control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410829215.4A CN104500378A (en) | 2014-12-26 | 2014-12-26 | Compressor starting control device |
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| CN104500378A true CN104500378A (en) | 2015-04-08 |
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| CN201410829215.4A Pending CN104500378A (en) | 2014-12-26 | 2014-12-26 | Compressor starting control device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105386958A (en) * | 2015-12-09 | 2016-03-09 | 苏州工业职业技术学院 | Compressor system |
| CN109253101A (en) * | 2018-08-22 | 2019-01-22 | 西安陕鼓动力股份有限公司 | Pipeline compressor pressure release stops in emergency, one-key start control method after orderly shutdown |
| CN109989908A (en) * | 2019-04-25 | 2019-07-09 | 沈阳鼓风机集团自动控制系统工程有限公司 | Starting method, apparatus, storage medium and the computer equipment of compressor |
| CN113374680A (en) * | 2021-06-18 | 2021-09-10 | 国家石油天然气管网集团有限公司西气东输分公司 | Compressor unit combined operation control method and system |
| CN113719444A (en) * | 2021-09-16 | 2021-11-30 | 国家石油天然气管网集团有限公司 | Automatic barring control system and method for compressor unit in pressure relief state |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105386958A (en) * | 2015-12-09 | 2016-03-09 | 苏州工业职业技术学院 | Compressor system |
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| CN109253101A (en) * | 2018-08-22 | 2019-01-22 | 西安陕鼓动力股份有限公司 | Pipeline compressor pressure release stops in emergency, one-key start control method after orderly shutdown |
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| CN109989908A (en) * | 2019-04-25 | 2019-07-09 | 沈阳鼓风机集团自动控制系统工程有限公司 | Starting method, apparatus, storage medium and the computer equipment of compressor |
| CN113374680A (en) * | 2021-06-18 | 2021-09-10 | 国家石油天然气管网集团有限公司西气东输分公司 | Compressor unit combined operation control method and system |
| CN113719444A (en) * | 2021-09-16 | 2021-11-30 | 国家石油天然气管网集团有限公司 | Automatic barring control system and method for compressor unit in pressure relief state |
| CN113719444B (en) * | 2021-09-16 | 2023-09-22 | 国家石油天然气管网集团有限公司 | Automatic jigger control system and method under pressure release state of compressor unit |
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