CN102778847B - Automatic shutdown method of electric towing turbine unit in failure of controlling system and oil system - Google Patents

Automatic shutdown method of electric towing turbine unit in failure of controlling system and oil system Download PDF

Info

Publication number
CN102778847B
CN102778847B CN201210232875.5A CN201210232875A CN102778847B CN 102778847 B CN102778847 B CN 102778847B CN 201210232875 A CN201210232875 A CN 201210232875A CN 102778847 B CN102778847 B CN 102778847B
Authority
CN
China
Prior art keywords
lubricating oil
oil pump
pump motor
contactor
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201210232875.5A
Other languages
Chinese (zh)
Other versions
CN102778847A (en
Inventor
王东升
黄美春
李勇
田渭蓉
张亚军
张保平
王航
张武军
谢涛
张巍
黄达
王小军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian Shaangu Power Co Ltd
Original Assignee
Xian Shaangu Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xian Shaangu Power Co Ltd filed Critical Xian Shaangu Power Co Ltd
Priority to CN201210232875.5A priority Critical patent/CN102778847B/en
Publication of CN102778847A publication Critical patent/CN102778847A/en
Application granted granted Critical
Publication of CN102778847B publication Critical patent/CN102778847B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Control Of Turbines (AREA)

Abstract

The invention discloses an automatic shutdown method of an electric motor towing turbine unit in failure of a controlling system and an oil system. A normally opened pressure switch is arranged on a lubricating oil supplying main pipe of the electric motor towing turbine unit, and when the pressure of the lubricating oil is as low as the preset value, the contact of the pressure switch is closed. A pressure switch normally closed contact of the lubricating oil supplying main pipe and a number 1 and number 2 lubricating oil pump motor alternating current contactor normally closed auxiliary contact which are sequentially connected in series are connected into a high-voltage control loop 220-V direct current power supply together with a tripping mechanism of a vacuum breaker to form a safe shutdown control loop. When the safe shutdown control loop is closed, the tripping mechanism of the vacuum breaker in an operation cabinet of the electric motor towing turbine unit is powered on, and the electric towing turbine unit is shut down in interlocking mode. Safe shutdown of the electric towing turbine unit is ensured when the control system and the oil system are failed, and the phenomenon of wrong shutdown caused by wrong operation of the alternating current contactor normally closed auxiliary contact of the pressure switch contact of the lubricating oil supplying main pipe or a lubricating oil pump motor is avoided.

Description

Electricity drags the auto stop method of turbine set when control system and oil system lost efficacy
The invention belongs to the control system technical field of motor drag turbine set, relate to the auto stop method of a kind of motor drag turbine set when control system and oil system lost efficacy.
Background technology
Motor drag turbine set routine selects sliding bearing, and sliding bearing needs forced feed lubrication.Therefore, motor drag turbine set must arrange lubricating oil system.The Main Function of lubricating oil system in motor drag turbine set provides the functions such as lubrication, cooling, washing for unit.When lubricating oil system lost efficacy, if unit is still in operation, very easily caused the infringements such as unit bearing bush temperature is too high, the damage of burn-out of bearing, thrust disc, blade wear, machine group rotor time serious, can be caused to wear and tear, hold the major accidents such as cylinder distortion, mechanical driving.Therefore, lubricating oil system failuring delay motor drags the necessary emergency stop of turbine set.
When lubricating oil system lost efficacy; the conventional control methods that motor drag turbine set is shut down is by turbocompressor unit automatic control system Real-Time Monitoring set lubricating oil system pressure condition; when lubricating oil pressure is too low, automatic control system sends shutdown control signal, realizes compressor emergency shutdown.But there are some potential safety hazards in above-mentioned control method.Such as: when the unexpected dead electricity of motor drag turbine set low-tension supply 380V or 220V AC power or other unexpected factors such as robot control system(RCS) power loss or CPU deadlock cause lube oil pump out of service; when causing lubricating oil system fuel feeding manifold pressure too low; if machine unit automatic control system cannot normally work; just there will be lubricating oil system to lose efficacy; unit cannot the dangerous working condition of auto stop immediately, thus causes the generation of security incident.The problems referred to above just at present motor drag turbine set at control system technical elements urgent problem.
Summary of the invention
The defect existed for above-mentioned prior art or deficiency, the object of the invention is to, the auto stop method of a kind of motor drag turbine set when control system and oil system lost efficacy is provided, the method does not rely on machine unit automatic control system, according to put into operation on-site verification, when when control system and oil system lose efficacy, motor drag turbine set guaranteed that unit was automatic, safe shutdown, turn avoid the mistakenly stop machine phenomenon that lubricating oil fuel feeding manifold pressure switch contact or the misoperation of lubricating oil pump motor A.C. contactor normally closed auxiliary contact cause simultaneously, have in time, safety, reliably, without the need to manual operation, do not rely on the advantages such as machine unit automatic control system, it is the standby interlock protection measure that control system and oil system failuring delay motor drag the necessity of the conventional control methods that turbine set is shut down.
For realizing above-mentioned task, the present invention takes following technical solution:
The auto stop method of motor drag turbine set of the present invention when control system and oil system lost efficacy, specifically comprises the steps:
The first step; on motor drag turbine set lubricating oil fuel feeding house steward, distance unit distalmost end arranges a pressure switch open in usual, and according to the requirement of unit actual operating mode, arranges lubricating oil and shut down pressure set points; when lubricating oil pressure is low to moderate this setting value, pressure switch contact closes.
Second step, in the 1# lubricating oil pump motor major loop of motor drag turbine set lubricating oil system, 1# lubricating oil pump motor A.C. contactor is set, make the coils connected in series of this A.C. contactor access 1# lubricating oil pump motor to open, stop in control loop, this A.C. contactor is at least with a normally closed auxiliary contact.
3rd step, in the 2# lubricating oil pump motor major loop of motor drag turbine set lubricating oil system, 2# lubricating oil pump motor A.C. contactor is set, make the coils connected in series of this A.C. contactor access 2# lubricating oil pump motor to open, stop in control loop, this A.C. contactor is at least with a normally closed auxiliary contact.
4th step, in motor drag turbine set high-voltage operation cabinet, arrange vacuum circuit breaker, this vacuum circuit breaker comprises a tripping mechanism.
5th step, after lubricating oil fuel feeding manifold pressure switch normally closed contact, 1# lubricating oil pump motor A.C. contactor normally closed auxiliary contact, 2# lubricating oil pump motor A.C. contactor normally closed auxiliary contact are connected successively, connecting with the tripping mechanism that motor drag turbine set runs cabinet mesohigh vacuum circuit breaker accesses in the 220V direct supply in high voltage control loop, composition safe shutdown control loop; When safe shutdown control loop closes, motor drag turbine set runs vacuum circuit breaker tripping mechanism in cabinet and obtains electric, and vacuum circuit breaker trips, and mair motor power-off, electricity drags unit Concatenate shut-down.
Further, pressure set points shut down by described lubricating oil is 80KPa.
Accompanying drawing explanation
Fig. 1 is the electric loop figure of the auto stop method of motor drag turbine set of the present invention when control system and oil system lost efficacy.
Fig. 2 is the auto stop Method And Principle figure of motor drag turbine set of the present invention when control system and oil system lost efficacy.
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Specific implementation method
For the motor drag turbo compressor unit of routine, lubricating oil system arranges two lube oil pump active and standby each other (1# lube oil pumps usually, 2# lube oil pump), namely method of the present invention is comprise 1# lube oil pump, and the motor drag turbo compressor unit of 2# lube oil pump is that object carries out.With reference to Fig. 1, the auto stop method of motor drag turbine set of the present invention when control system and oil system lost efficacy, specifically comprises the steps:
The first step; on motor drag turbine set lubricating oil fuel feeding house steward, distance unit distalmost end arranges a pressure switch open in usual; and according to the requirement of unit actual operating mode; lubricating oil is set and shuts down pressure set points (being generally set to 80KPa); when lubricating oil pressure is low to moderate this setting value, pressure switch contact closes.
Second step, in the 1# lubricating oil pump motor major loop of motor drag turbine set lubricating oil system, 1# lubricating oil pump motor A.C. contactor is set, make the coils connected in series of this A.C. contactor access 1# lubricating oil pump motor to open, stop in control loop, this A.C. contactor is at least with a normally closed auxiliary contact.
3rd step, in the 2# lubricating oil pump motor major loop of motor drag turbine set lubricating oil system, 2# lubricating oil pump motor A.C. contactor is set, make the coils connected in series of this A.C. contactor access 2# lubricating oil pump motor to open, stop in control loop, this A.C. contactor is at least with a normally closed auxiliary contact.
4th step, in motor drag turbine set high-voltage operation cabinet, arrange vacuum circuit breaker, this vacuum circuit breaker comprises a tripping mechanism.
5th step, after lubricating oil fuel feeding manifold pressure switch normally closed contact, 1# lubricating oil pump motor A.C. contactor normally closed auxiliary contact, 2# lubricating oil pump motor A.C. contactor normally closed auxiliary contact are connected successively, connecting with the tripping mechanism that motor drag turbine set runs vacuum circuit breaker in cabinet accesses in the 220V direct supply in high voltage control loop, composition safe shutdown control loop; When safe shutdown control loop closes, motor drag turbine set runs vacuum circuit breaker tripping mechanism in cabinet and obtains electric, and vacuum circuit breaker trips, and mair motor power-off, electricity drags unit Concatenate shut-down.
As shown in Figure 2, the Concatenate shut-down principle of method of the present invention is: when 1# lubricating oil pump motor, 2# lubricating oil pump motor are all out of service, the normally closed auxiliary contact of 1# lubricating oil pump motor A.C. contactor and 2# lubricating oil pump motor A.C. contactor is all closed; Meanwhile; lubricating oil fuel feeding manifold pressure reduces gradually; when lubricating oil main's pressure is low to moderate lubricating oil fuel feeding manifold pressure switch setting value 80KPa; the upper pressure switch normally closed contact open in usual arranged of lubricating oil fuel feeding house steward closes; make the tripping mechanism in unit operation cabinet vacuum circuit breaker charged; vacuum circuit breaker trips, mair motor power-off, unit Concatenate shut-down.
Present invention achieves the unit automatic interlock of motor drag turbine set when control system and oil system lost efficacy to shut down, is conventional control methods necessity, the reliable standby interlock protection measure that motor drag turbine set is shut down.

Claims (1)

1. the auto stop method of motor drag turbine set when control system and oil system lost efficacy, is characterized in that, specifically comprise the steps:
The first step, on motor drag turbine set lubricating oil fuel feeding house steward, distance unit distalmost end arranges a pressure switch open in usual, and according to the requirement of unit actual operating mode, arranges lubricating oil and shut down pressure set points, when lubricating oil pressure is low to moderate this setting value, pressure switch contact closes; Pressure set points shut down by described lubricating oil is 80KPa;
Second step, in the 1# lubricating oil pump motor major loop of motor drag turbine set lubricating oil system, 1# lubricating oil pump motor A.C. contactor is set, make the coils connected in series of this A.C. contactor access 1# lubricating oil pump motor to open, stop in control loop, this A.C. contactor is at least with a normally closed auxiliary contact;
3rd step, in the 2# lubricating oil pump motor major loop of motor drag turbine set lubricating oil system, 2# lubricating oil pump motor A.C. contactor is set, make the coils connected in series of this A.C. contactor access 2# lubricating oil pump motor to open, stop in control loop, this A.C. contactor is at least with a normally closed auxiliary contact;
4th step, in motor drag turbine set high-voltage operation cabinet, arrange vacuum circuit breaker, this vacuum circuit breaker comprises a tripping mechanism;
5th step, after the normally closed contact of the pressure switch open in usual on lubricating oil fuel feeding house steward, 1# lubricating oil pump motor A.C. contactor normally closed auxiliary contact, 2# lubricating oil pump motor A.C. contactor normally closed auxiliary contact are connected successively, connecting with the tripping mechanism that motor drag turbine set runs cabinet mesohigh vacuum circuit breaker accesses in the 220V direct supply in high voltage control loop, composition safe shutdown control loop; When 1# lubricating oil pump motor, 2# lubricating oil pump motor are all out of service, the normally closed auxiliary contact of 1# lubricating oil pump motor A.C. contactor and 2# lubricating oil pump motor A.C. contactor is all closed; Meanwhile; lubricating oil fuel feeding manifold pressure reduces gradually; when lubricating oil main's pressure is low to moderate lubricating oil fuel feeding manifold pressure switch setting value 80KPa; the upper pressure switch normally closed contact open in usual arranged of lubricating oil fuel feeding house steward closes; make the tripping mechanism in unit operation cabinet vacuum circuit breaker charged; vacuum circuit breaker trips, mair motor power-off, unit Concatenate shut-down.
CN201210232875.5A 2012-07-06 2012-07-06 Automatic shutdown method of electric towing turbine unit in failure of controlling system and oil system Active CN102778847B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210232875.5A CN102778847B (en) 2012-07-06 2012-07-06 Automatic shutdown method of electric towing turbine unit in failure of controlling system and oil system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210232875.5A CN102778847B (en) 2012-07-06 2012-07-06 Automatic shutdown method of electric towing turbine unit in failure of controlling system and oil system

Publications (2)

Publication Number Publication Date
CN102778847A CN102778847A (en) 2012-11-14
CN102778847B true CN102778847B (en) 2015-07-08

Family

ID=47123783

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210232875.5A Active CN102778847B (en) 2012-07-06 2012-07-06 Automatic shutdown method of electric towing turbine unit in failure of controlling system and oil system

Country Status (1)

Country Link
CN (1) CN102778847B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112065699B (en) * 2020-08-26 2022-10-11 珠海格力机电工程有限公司 Motor control device and method and electrical equipment
CN113700663B (en) * 2021-09-10 2024-01-16 唐山不锈钢有限责任公司 Reliable interlocking system for lubricating protection of blast furnace blower

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0718541A1 (en) * 1994-12-22 1996-06-26 ABB Management AG Method and device for self-lubricating of the bearings of a turbo-charger
CN1539998A (en) * 2003-10-31 2004-10-27 武汉钢铁设计研究总院 Control method for stopping power generation systm operated by using excess pressure of blast furnace gas and relevant software
CN201265735Y (en) * 2008-09-27 2009-07-01 浙江广播电视大学 Automatic control system for oil pumps
CN201326421Y (en) * 2008-12-10 2009-10-14 上海电气电站设备有限公司 Steam turbine lubricating oil supply device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1064484B1 (en) * 1998-03-23 2004-05-26 Siemens Aktiengesellschaft Electromechanical actuator for a valve and steam turbine
DE10324986B4 (en) * 2003-06-03 2005-11-10 Man B & W Diesel Ag Device for emergency lubrication

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0718541A1 (en) * 1994-12-22 1996-06-26 ABB Management AG Method and device for self-lubricating of the bearings of a turbo-charger
CN1539998A (en) * 2003-10-31 2004-10-27 武汉钢铁设计研究总院 Control method for stopping power generation systm operated by using excess pressure of blast furnace gas and relevant software
CN201265735Y (en) * 2008-09-27 2009-07-01 浙江广播电视大学 Automatic control system for oil pumps
CN201326421Y (en) * 2008-12-10 2009-10-14 上海电气电站设备有限公司 Steam turbine lubricating oil supply device

Also Published As

Publication number Publication date
CN102778847A (en) 2012-11-14

Similar Documents

Publication Publication Date Title
CN201557068U (en) Control device of electromotor lift-up oil pump for fan
CN102778847B (en) Automatic shutdown method of electric towing turbine unit in failure of controlling system and oil system
CN202266819U (en) Circuit for automatic switching spare pump for mill lubricating oil station
CN202165256U (en) Controller for air compressor
CN205921369U (en) Overheated automatic protection circuit of motor
CN104631541A (en) High-power high-voltage motor safe operation protective system of electric hydraulic excavator
CN208257694U (en) A kind of electric motor starting control device
CN204610287U (en) Screw air compressor control system circuit
CN105673289A (en) Diesel generating set fast in starting, automatic in parallel operation or quit operation and stable in performance
CN204633646U (en) A kind of disintegrating machine threephase asynchronous machine soft starting device
CN201202584Y (en) Splashing-proof and signal apparatus of small-sized hydroelectric generating set
CN204590154U (en) Electric hydraulic excavating machine high-power high voltage motor safe operation protection system
CN210490469U (en) Power supply loop of oil station for draught fan of unit
CN102878415B (en) Improved fan oil station electrical control system
CN203573171U (en) Liquid level control system
CN201797472U (en) Soft-start control system of building hoist
CN218920052U (en) Security system suitable for turbo generator
CN216767491U (en) Lubricating oil accident linkage system
CN2838143Y (en) The automatic control equipment of whole bi-motor
CN206313428U (en) A kind of hot-rolling oil pump on-line checking protection system
CN112878413A (en) Start-stop control system of electric hydraulic excavator
CN206293880U (en) Motor sweeps a protector
CN207454423U (en) Auxiliary oil pump control device
CN209184517U (en) A kind of low pressure pitch motor brake control relay failure protective device
CN205806882U (en) Bearing shell lubricating system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant