CN107623376A

CN107623376A - Diesel engine stops in emergency Electromagnetic Valve Circuit failover, warning circuit and its method

Info

Publication number: CN107623376A
Application number: CN201710768468.9A
Authority: CN
Inventors: 陈韬; 王长宝; 凌青华; 齐亮; 孙林; 夏永锋
Original assignee: Jiangsu University of Science and Technology
Current assignee: Jiangsu University of Science and Technology
Priority date: 2017-08-31
Filing date: 2017-08-31
Publication date: 2018-01-23

Abstract

The present invention discloses a kind of diesel engine and stopped in emergency Electromagnetic Valve Circuit failover, warning circuit and its method, the circuit, which includes string, has undercurrent to detect electric current relay, the Electromagnetic Valve Circuit that stops in emergency of over-current detection electric current relay, stop in emergency standby Electromagnetic Valve Circuit, stop in emergency magnetic valve excessively stream switching control loop, stop in emergency magnetic valve undercurrent switching control loop, detection parking power-fail is switched to the voltage-type relay of stand-by power supply power supply, stop power loss alarm circuit, stop in emergency magnetic valve excessively stream alarm circuit, stop in emergency magnetic valve undercurrent alarm circuit.Method is; parking power-fail is directly switch to stand-by power supply and powers and carry out indicator light alarm prompting; standby magnetic valve is switched to when magnetic valve undercurrent or the excessively stream of stopping in emergency to be stopped in emergency; and carry out corresponding indicator light alarm prompting; and the Electromagnetic Valve Circuit that stops in emergency is cut off when stopping in emergency magnetic valve excessively stream, the Electromagnetic Valve Circuit that stopped in emergency to cut-out carries out short-circuit protection.

Description

Diesel engine stops in emergency Electromagnetic Valve Circuit failover, warning circuit and its method

Technical field

The invention belongs to diesel engine safety protection technique field, and in particular to a kind of diesel engine stops in emergency Electromagnetic Valve Circuit Failover, warning circuit and its implementation.

Background technology

At present：The emergency stopping system of diesel engine is died and oil-break two ways to stopping in emergency for diesel engine, is died Mode is the installation Electromagnetic Control valve at inlet and outlet mouth, in case of emergency control valve can be died；Oil-break mode be Install oil-break Electromagnetic Control valving on oil circuit additional, can urgent oil-break when failure occurs.These Electromagnetic Control valves are i.e. logical The often signified magnetic valve that stops in emergency.It is designed when the magnetic valve that the magnetic valve that stops in emergency uses is normal-closed electromagnetic valve The Electromagnetic Valve Circuit that stops in emergency stops for degaussing (dead electricity)；When the magnetic valve that the magnetic valve that stops in emergency uses is normal-open electromagnetic valve When it is designed stop in emergency Electromagnetic Valve Circuit for magnetic (energization) stops.Magnetic (energization) parking is stopped and obtains in degaussing (dead electricity) In two methods, what prior art Literature was recorded：Diesel engine died with degaussing or the magnetic valve of oil-break set it is urgent Electromagnetic Valve Circuit monitoring alarm method is many in vehicle-parking circuit, does not just sketch herein, only to the subject matter of degaussing parking method Reiterate：Miss the bus and stop！, when parking power loss and/or the Electromagnetic Valve Circuit that stops in emergency disconnection, diesel engine mistakenly stop car, influence Diesel engine normal operation.And diesel engine with magnetic died or the magnetic valve of oil-break set the circuit that stops in emergency in magnetic valve Monitor loop alarm method is seldom.Diesel engine with magnetic died or the magnetic valve of oil-break set stop in emergency circuit work Process is：The magnetic valve that stopped in emergency when diesel engine normal work is in dead electricity (loss of excitation) state, that is, the magnetic valve that stops in emergency loses During electricity condition its control die, oil-break valve is logical；When in the case of urgent and significant trouble to the magnetic valve that stops in emergency Be powered (magnetic), closes the dying of its control, oil-break valve, realizes that diesel engine stops in emergency.However, for diesel engine with magnetic Died or the magnetic valve of oil-break set the circuit that stops in emergency in, when need to stop in emergency, the positive normal open of the magnetic valve that stops in emergency Electric diesel engine ability jerk, when line fracture, coil open circuit, coil short and power supply occurs in the electromagnetic valve coil that stops in emergency It during the failures such as electrical contact is bad, need to stop in emergency, can not just pass through the dying of closed electromagnetic valve its control of stopping in emergency, oil-break Valve, cause failure of stopping in emergency, so that the safety of diesel engine cannot ensure.Therefore for magnetic is died or oil-break The diesel engine that sets of magnetic valve stop in emergency circuit, to ensure the execution of diesel engine (diesel-driven generator) safe shutdown, be badly in need of Detected and alarmed to whether the corresponding Electromagnetic Valve Circuit that stops in emergency fails.Although being documented, such as number of patent application For：201510846141.X a kind of diesel engine stop in emergency Electromagnetic Valve Circuit failure alarm circuit and its alarm method, be provided with The redundant configuration of stand-by power supply and magnetic valve (being similarly normal-open electromagnetic valve), solve：It is switched to during parking power loss standby Power supply is powered；Control recognizes Electromagnetic Valve Circuit disconnection of stopping in emergency when stopping in emergency, be switched to standby solenoid valves work, Pass through the dying of standby magnetic valve closing control, oil-break path.Seeming perfect set may not realize actually：Parking Stand-by power supply power supply is switched to during power loss；The Electromagnetic Valve Circuit that stopped in emergency when control is stopped in emergency disconnects, and is switched to standby Worked with solenoid valves, pass through the dying of standby magnetic valve closing control, oil-break path.On when stop power loss when not The reasons why stand-by power supply is powered, which may be switched to, is：Because specific control parking power supply and the current mode relay of stand-by power supply switching The rated current of device coil (the second current relay coil) be more than or equal to parking power supply rated current, and with the electric current The specified electricity that can not possibly be more than or equal to parking power supply using LED as the electric current that the first alarm lamp flows through of type relay coil concatenation Stream, otherwise will not with LED as alarm lamp；When stop power loss when, it is assumed that flow through and the current relay coil string What is connect is more than or equal to the rated current of parking power supply using LED as the electric current that the first alarm lamp flows through, and the current relay is complete Into parking power supply and stand-by power supply switch operating, so require that the rated current of alarm power supply is more than or equal to parking again The rated current of power supply, it otherwise can not normally complete switching parking power supply and switch with stand-by power supply；Again because with using LED as second The rated current of the current relay coil (the 3rd current relay coil) of alarm lamp concatenation, which also requires that, to be more than or waits In parking power supply rated current, so in order to ensure alarm power supply normal work, just necessarily require alarm power supply volume Determine more than two times of the rated current that electric current is more than or equal to parking power supply, and the specified of power supply of being alarmed actually in engineering design Current requirements can not possibly be relevant with the rated current for the power supply that stops, the electric current individually flowed through with the alarm lamp for power supply power supply of alarming It is required that be also impossible to stop power supply rated current it is relevant, and with alarm power supply power supply current relay coil will The rated current asked be also impossible to stop power supply rated current it is relevant, equally unlikely require each alarm lamp stream The electric current crossed is more than or equal to the rated current of the power supply for its power supply.On the magnetic valve that stopped in emergency when control is stopped in emergency Loop disconnects, it is impossible to which being switched to the reasons why standby solenoid valves work is：It is serially connected in the electricity for the Electromagnetic Valve Circuit that stops in emergency Identification is less than the situation that the Electromagnetic Valve Circuit that stops in emergency disconnects at all for flow pattern relay (the first current relay), because concatenation Current relay coil (the first current relay coil) of the Electromagnetic Valve Circuit that the stops in emergency invention setting requirements its Rated current is more than or equal to the rated current of parking power supply, disconnects feelings less than jerk car Electromagnetic Valve Circuit so as to identify at all Condition, concrete reason are：1. the short-circuit situation for the Electromagnetic Valve Circuit that stops in emergency can only be recognized, because the magnetic valve that stops in emergency returns During the normal power-up work of road, set caused normal current can not possibly be more than or equal to the rated current of parking power supply, such as Electric current caused by fruit is more than or equal to the rated current of parking power supply, and short circuit occurs in that Electromagnetic Valve Circuit that stops in emergency certainly Phenomenon；2. when the current relay for being serially connected in the Electromagnetic Valve Circuit that stops in emergency is not recognized more than or equal to parking power supply Rated current, the Electromagnetic Valve Circuit institute galvanization that can only illustrate to stop in emergency are in normal range (NR) or because loose contact resistance become big electricity Stream is equal to zero less than normal value or direct breaking current；3. because it is serially connected in the current relay for the Electromagnetic Valve Circuit that stops in emergency The short-circuit situation for the Electromagnetic Valve Circuit that stops in emergency can only be recognized, so as to occur stopping in emergency Electromagnetic Valve Circuit institute galvanization not Pipe is in when normally, being also less than normal (such as open circuit)：Assuming that the 3rd current relay line being serially connected on the second alarm lamp The rated current that institute's galvanization is more than or equal to parking power supply is enclosed, then standby magnetic valve is similarly in obtain electric working condition；It is actual On be serially connected in the 3rd current relay coil institute galvanization on the second alarm lamp and can not possibly be more than or equal to parking power supply Rated current, so when the Electromagnetic Valve Circuit institute's galvanization that stops in emergency is regardless of being in normally, is also less than normally (as breaking) Standby magnetic valve must not electricity；4. because when the current relay for being serially connected in the Electromagnetic Valve Circuit that stops in emergency can only recognize promptly The short-circuit situation in electromagnetic valve for braking loop, when the electric current for the Electromagnetic Valve Circuit that stops in emergency is more than or equal to the specified of parking power supply During electric current, to stopping in emergency, Electromagnetic Valve Circuit is not cut off, and in the same old way in "on" position, and has been turned off the standby electricity that has no problem Magnet valve, therefore the Electromagnetic Valve Circuit short-circuit protection work that stops in emergency is not had, standby magnetic valve can not be switched to and stopped in emergency, Certainly overload protective function can not be played to parking power supply.Further reaffirm：Because of two current modes being serially connected on alarm lamp The rated current of relay coil is required to the rated current for being more than or equal to parking power supply, rated current of the hardly possible to alarm power supply More than or equal to more than two times of the rated current of parking power supply！, and each with LED as alarm lamp light when the electric current that flows through More than or equal to the rated current of parking power supply！, otherwise, the current relay being serially connected on alarm lamp is had no idea work. Certainly also number of patent application is：201510845456.2 a kind of diesel-driven generator stop in emergency Electromagnetic Valve Circuit Failure Alarm Circuit and its alarm method, the redundant configuration provided with stand-by power supply and magnetic valve (being similarly normal-open electromagnetic valve), solve：Parking Stand-by power supply power supply is switched to during power loss；Control recognizes Electromagnetic Valve Circuit disconnection of stopping in emergency, switching when stopping in emergency Worked to standby solenoid valves, pass through the dying of standby magnetic valve closing control, oil-break path.Emitting seemingly realizes above-mentioned work( Can, but be except number of patent application be present：201510846141.X a kind of diesel engine stop in emergency Electromagnetic Valve Circuit failure report Alert circuit and its alarm method all the problem of existing and defect, power supply used in alarm lamp also be present produced by diesel-driven generator Electricity directly power, alarm lamp instruction be can't see at all after diesel-driven generator jerk car, because controlling diesel-driven generator jerk When, user can not possibly stare at alarm lamp and see, it may be noted that once alarm lamp instruction state only after jerk, but diesel-driven generator is anxious Stop not generating electricity, how what is said or talked about has power supply output.And from number of patent application 201510846141.X and number of patent application 201510845456.2 specification described in beneficial effect content see：Diesel engine (diesel generator) stops in emergency electromagnetism Valve partial failure warning circuit, self-shield can be carried out in time in device fails, to ensure its magnetic valve that stops in emergency Loop normal work, so as to realize the automatic emergency stop-working protection of diesel engine (diesel generator) in abnormal cases.Enter one The accompanying drawing of step explanation number of patent application 201510846141.X and number of patent application 201510845456.2 is diesel engine master control mould Block sends emergency shutdown instruction to diesel engine (diesel generator) the Electromagnetic Valve Circuit failure alarm circuit that stops in emergency, and control opens The diesel engine (diesel generator) after module switch is connected is closed to stop in emergency Electromagnetic Valve Circuit failure alarm circuit structural representation Figure, that is to say, that the accompanying drawing of number of patent application 201510846141.X and number of patent application 201510845456.2 is urgent Diesel engine (diesel generator) during parking stops in emergency Electromagnetic Valve Circuit failure alarm circuit structural representation, so as to more enter One step illustrates number of patent application 201510846141.X and the diesel engine (bavin described in number of patent application 201510845456.2 Diesel engine) use stop in emergency magnetic valve for magnetic electromagnetic valve for braking.

The content of the invention

The purpose of the present invention in order to solve the defects of prior art is present, for magnetic is died or the electromagnetism of oil-break Valve set diesel engine stop in emergency, there is provided a kind of diesel engine stop in emergency Electromagnetic Valve Circuit failover, warning circuit and its Method, realize that parking power-fail is switched to stand-by power supply power supply, when stop in emergency Electromagnetic Valve Circuit undercurrent, mistake when stopping in emergency Stream, is switched to standby magnetic valve and is stopped in emergency, and short-circuit protection is also carried out during magnetic valve excessively stream of stopping in emergency, and guarantee promptly stops Car circuit normal work；And indicator lamp is carried out to failure and prompted respectively.

In order to realize above-mentioned purpose, the technical scheme of realization of the invention is：

Diesel engine stops in emergency Electromagnetic Valve Circuit failover, warning circuit, including parking power supply DC1, stand-by power supply DC2, alarm power supply DC3, first voltage type relay, second voltage type relay, tertiary voltage type relay, the first current mode Relay, the second current relay, the magnetic valve HV1 that stops in emergency, standby magnetic valve HV2, Fisrt fault indicator lamp MIL1, Two malfunction indicator lamp MIL2, the 3rd malfunction indicator lamp MIL3, first switch module K1, second switch module K2, the 3rd switching molding Block K3；The first voltage type relay coil KV11 directly power supply DC1 and connects with parking, parking power supply DC1 positive pole and the One voltage-type relay two-way contact KV12 normally opened end is connected, stand-by power supply DC2 positive pole and first voltage type relay Two-way contact KV12 normal-closed end is connected, and stand-by power supply DC2 negative pole is connected with the negative pole for the power supply DC1 that stops；First electricity Flow pattern relay coil KI11 is sequentially connected in series the second current relay coil KI21, tertiary voltage type relay normally closed contact KV33, the coil for the magnetic valve HV1 that stops in emergency, first switch module K1 switch after, the first current relay coil KI11 The other end be connected with first voltage type relay two-way contact KV12 common port, first switch module K1 switch it is another One end is connected with the negative pole for the power supply DC1 that stops, and first parking loop, institute are formed with parking power supply DC1 or stand-by power supply DC2 First parking loop is stated as the Electromagnetic Valve Circuit that stops in emergency；Second voltage type relay normally open contact KV22 is sequentially connected in series standby After magnetic valve HV2 coil, second switch module K2 switch, the second voltage type relay normally open contact KV22 other end with First voltage type relay two-way contact KV12 common port is connected, the other end of second switch module K2 switch and parking Power supply DC1 negative pole is connected, and forms Article 2 parking loop with parking power supply DC1 or stand-by power supply DC2, the Article 2 is stopped Car loop is the standby Electromagnetic Valve Circuit that stops in emergency；Second current relay normally opened contact KI22 and tertiary voltage type relay Normally opened contact KV32 phases simultaneously connect, and one end after connecing is connected with first voltage type relay two-way contact KV12 common port, Standby electricity magnet valve HV2 coils are accessed after other end concatenation tertiary voltage type relay coil KV31 to switch with second switch module K2 Connecting line on, form Article 3 parking loop with parking power supply DC1 or stand-by power supply DC2, Article 3 parking loop is Stop in emergency magnetic valve excessively stream switching control loop；First current relay normally-closed contact KI12 one end and first voltage type Relay two-way contact KV12 common port is connected, and is accessed after other end concatenation second voltage type relay coil KV21 standby On the connecting line of magnetic valve HV2 coils and second switch module K2 switch, the is formed with parking power supply DC1 or stand-by power supply DC2 Four parking loops, the Article 4 parking loop is magnetic valve undercurrent switching control loop of stopping in emergency；First voltage type after Electrical equipment normally-closed contact KV13 power supply DC3 and connects after concatenating the 3rd malfunction indicator lamp MIL3 with alarm, forms and stops with alarm power supply DC3 Car power-fail alarm circuit；The positive pole phase of tertiary voltage type relay two-way contact KV34 common port and the power supply DC3 that alarms Connection, tertiary voltage type relay two-way contact KV34 normally opened end concatenate after the second malfunction indicator lamp MIL2 with power supply of alarming DC3 negative pole is connected, and the magnetic valve excessively stream alarm circuit that stops in emergency is formed with alarm power supply DC3；Tertiary voltage type relay Two-way contact KV34 normal-closed end be sequentially connected in series the first current relay normally-closed contact KI13, Fisrt fault indicator lamp MIL1, Negative pole after 3rd switch module K3 switch with the power supply DC3 that alarms is connected, and the electromagnetism that stops in emergency is formed with alarm power supply DC3 Valve undercurrent alarm circuit；First switch module K1 control terminal, second switch module K2 control terminal and the 3rd switch module K3 Control terminal it is connected with each other after be connected with the output of diesel engine main control module.

Fisrt fault indicator lamp MIL1 described above carries for the magnetic valve HV1 coil undercurrents that stopped in emergency during stopping in emergency Show, when Fisrt fault indicator lamp MIL1 is lighted, the coil undercurrent for the magnetic valve HV1 that illustrates to stop in emergency.

Coil excessively streams of the second malfunction indicator lamp MIL2 described above for the magnetic valve HV1 that stopped in emergency during stopping in emergency Prompting, when the second malfunction indicator lamp MIL2 is lighted, the coil excessively stream for the magnetic valve HV1 that illustrates to stop in emergency.

3rd malfunction indicator lamp MIL3 described above be used to stop power supply DC1 dead electricity when prompt, when parking power supply the 3rd therefore When barrier indicator lamp MIL3 is lighted, illustrate power supply DC1 failures of stopping.

First voltage type relay coil KV11 described above rated voltage is more than parking power supply DC1 rated voltage.

Above-described first voltage type relay two-way contact KV12, second voltage type relay normally open contact KV22, And the maximum current that tertiary voltage type relay normally closed contact KV33 is allowed to flow through is all higher than or equal to the volume for stopping power supply DC1 Determine electric current.

Above-described first current relay coil KI11：When the electric current flowed through is more than or equal to its rated current The contact action of one current relay, i.e. normally opened contact are connected, and normally-closed contact disconnects；When the electric current flowed through is less than its specified electricity The contact of the first current relay is in static state during stream, i.e. normally opened contact is disconnected, and normally-closed contact is connected.

Above-described second current relay coil KI21：The second electricity when the electric current flowed through is more than its rated current The contact action of flow pattern relay, i.e. normally opened contact are connected, and normally-closed contact disconnects；When the electric current flowed through is less than or equal to its specified electricity The contact of the second current relay is in static state during stream, i.e. normally opened contact is disconnected, and normally-closed contact is connected.

First current relay coil KI11 described above rated current is set equal to the magnetic valve HV1 lines that stop in emergency The extinction current of circle；The rated current of the second current relay coil KI21 is set equal to the magnetic valve that stops in emergency The maximum allowed current of HV1 coils.

The above-described extinction current for stopping in emergency magnetic valve HV1 coils is to refer to guarantee to stop in emergency electromagnetism The minimum current of valve HV1 normal works.

The above-described maximum allowed current for stopping in emergency magnetic valve HV1 coils is to refer to guarantee to burn out promptly The maximum operating currenbt of electromagnetic valve for braking HV1 coils.

First switch module K1, second switch module K2 and the 3rd switch module K3 described above：Receiving diesel engine During during the emergency shut-down control device signal that main control module is sent, the switch connection that accordingly controls, i.e. first switch module K1's opens Close and connect, second switch module K2 switch connection, the 3rd switch module K3 switch connection；Diesel engine master control is not being received During during the emergency shut-down control device signal that module is sent, the switch accordingly controlled is off, i.e. first switch module K1 Switch be off, second switch module K2 switch is off, the 3rd switch module K3 switch is in Off-state.

In order to realize above-mentioned purpose, another technical scheme of the invention is：

Diesel engine stops in emergency the implementation method of Electromagnetic Valve Circuit failover, warning circuit, comprises the following steps:

First, stop power supply DC1 and stand-by power supply DC2 handoff procedures

1) when stop power supply DC1 output for it is normal when, first voltage type relay coil KV11 obtain it is electric, first voltage type after The contact action of electrical equipment：

(1) first voltage type relay two-way contact KV12 common port and normally opened termination are logical, and parking power supply DC1 is to parking Loop power supply；

(2) first voltage type relay normally closed contact KV13 disconnects, and the 3rd malfunction indicator lamp MIL3 extinguishes；

2) when the power supply DC1 that stops fails, first voltage type relay coil KV11 dead electricity, first voltage type relay Contact reverts to static state：

(1) first voltage type relay two-way contact KV12 common port is connected with normal-closed end, is switched to stand-by power supply (DC2) to parking loop power supply；

(2) first voltage type relay normally closed contact KV13 is connected, and the 3rd malfunction indicator lamp MIL3 is lighted, and prompts user to stop Car power supply DC1 fails；

2nd, the process for the magnetic valve HV1 and standby magnetic valve HV2 that stops in emergency is controlled

1) during non-controlling diesel engine stops in emergency, switching off for first switch module K1, second switch mould are assert Block K2's switches off, and the 3rd switch module K3's switches off：

(1) the magnetic valve HV1 and standby magnetic valve HV2 that stops in emergency is in loss of excitation；

(2) Fisrt fault indicator lamp MIL1 extinguishes；

Tertiary voltage type relay coil KV31 must not electricity, the contact of tertiary voltage type relay is in static state, i.e., the Three voltage-type relay two-way contact KV34 normally opened end disconnects with common port, and the second malfunction indicator lamp MIL2 extinguishes；

2) during control diesel engine stops in emergency, first switch module K1 switch connection, second switch module are assert K2 switch connection, the 3rd switch module K3 switch connection：

(1) when the coil for the magnetic valve HV1 that stops in emergency is in normal operating conditions, that is, the Electromagnetic Valve Circuit that stops in emergency is flowed through Electric current when the extinction current for the magnetic valve HV1 coils that stop in emergency is between maximum allowed current, the first current mode after The contact action of electrical equipment, the contact of the second current relay are in static state：

1. the first current relay normally-closed contact KI12 disconnects, second voltage type relay coil KV21 must not be electric, the The contact of two voltage-type relays is in static state, i.e. second voltage type relay normally open contact KV22 disconnects, stopped in emergency standby Electromagnetic Valve Circuit must not be electric, and standby magnetic valve HV2 is in loss of excitation；

2. the first current relay normally-closed contact KI13 disconnects, Fisrt fault indicator lamp MIL1 extinguishes；

3. the second current relay normally opened contact KI22 disconnects, tertiary voltage type relay coil KV31 must not be electric, the The contact of three voltage-type relays is in static state, i.e., in parallel to tertiary voltage with the second current relay normally opened contact KI22 The tertiary voltage type relay normally open contact KV32 of type relay power self-locking disconnects, and is serially connected in the Electromagnetic Valve Circuit that stops in emergency Tertiary voltage type relay normally closed contact KV33 connect, power supply DC3 is to Fisrt fault indicator lamp MIL1 and second for control alarm The tertiary voltage type relay two-way contact KV34 of malfunction indicator lamp MIL2 power supplies common port disconnects with normally opened end, the second failure Indicator lamp MIL2 extinguishes；

(2) when the coil undercurrent for the magnetic valve HV1 that stops in emergency, that is, the electric current for flowing through the Electromagnetic Valve Circuit that stops in emergency are less than tightly During the extinction current of anxious electromagnetic valve for braking HV1 coils, the contact of the first current relay and the second current relay Contact be in static state：

1. the first current relay normally-closed contact KI12 connect, second voltage type relay coil KV21 obtain it is electric, second The contact action of voltage-type relay, i.e. second voltage type relay normally open contact KV22 are connected, and stop in emergency standby magnetic valve Loop is powered, and standby magnetic valve HV2 obtains magnetic；

2. the second current relay normally opened contact KI22 disconnects, tertiary voltage type relay coil KV31 must not be electric, the The contact of three voltage-type relays is in static state, i.e., in parallel to tertiary voltage with the second current relay normally opened contact KI22 The tertiary voltage type relay normally open contact KV32 of type relay power self-locking disconnects, and is serially connected in the Electromagnetic Valve Circuit that stops in emergency Tertiary voltage type relay normally closed contact KV33 connect, power supply DC3 is to Fisrt fault indicator lamp MIL1 and second for control alarm The tertiary voltage type relay two-way contact KV34 of malfunction indicator lamp MIL2 power supplies common port and normally opened end disconnects, and with it is normally closed Termination is logical：

A. tertiary voltage type relay two-way contact KV34 common port disconnects with normally opened end, the second malfunction indicator lamp MIL2 Extinguish；

B. tertiary voltage type relay two-way contact KV34 common port is connected with normal-closed end, and the first current relay is normal Closed contact KI13 is connected, and Fisrt fault indicator lamp MIL1 is lighted, the coil undercurrent for prompting user to stop in emergency magnetic valve HV1；

(3) when the coil excessively stream for the magnetic valve HV1 that stops in emergency, that is, the electric current for flowing through the Electromagnetic Valve Circuit that stops in emergency are more than tightly During the maximum allowed current of anxious electromagnetic valve for braking HV1 coils, the contact of the first current relay and the second current relay Contact act：

1. the second current relay normally opened contact KI22 connect, tertiary voltage type relay coil KV31 obtain it is electric, the 3rd The contact action of voltage-type relay：

A. the tertiary voltage type relay normally closed contact KV33 being serially connected in the Electromagnetic Valve Circuit that stops in emergency disconnects, and cut-out is tight Jerk car Electromagnetic Valve Circuit is powered, and to stopping in emergency, Electromagnetic Valve Circuit carries out short-circuit protection；

B. the tertiary voltage type relay normally open contact KV32 in parallel with the second current relay normally opened contact KI22 connects Lead to tertiary voltage type relay power self-locking；

C. the 3rd electricity that control alarm power supply DC3 powers to Fisrt fault indicator lamp MIL1 and the second malfunction indicator lamp MIL2 Die mould relay two-way contact KV34 common port and normally opened termination are logical, and are disconnected with normal-closed end：

Tertiary voltage type relay two-way contact KV34 common port and normally opened termination are logical, the second malfunction indicator lamp MIL2 points Coil excessively stream that is bright, prompting user to stop in emergency magnetic valve HV1；

Tertiary voltage type relay two-way contact KV34 common port disconnects with normal-closed end, and Fisrt fault indicator lamp MIL1 puts out Go out；

D. it is to be returned to stop in emergency or wait to remove to it to non-controlling diesel engine after the self-locking of tertiary voltage type relay power Discharge self-locking during institute's power supply source, the contact of tertiary voltage type relay is static state by Dynamic- Recovery；

2. the first current relay normally-closed contact KI12 disconnects, second voltage type relay coil KV21 must not be electric, the The contact of two voltage-type relays is in static state, i.e. second voltage type relay normally open contact KV22 disconnects, stopped in emergency standby Electromagnetic Valve Circuit no power, standby magnetic valve HV2 losss of excitation：

Until when the tertiary voltage type relay normally closed contact KV33 being serially connected in the Electromagnetic Valve Circuit that stops in emergency disconnects, the The contact of one current relay reverts to static state, i.e. the first current relay normally-closed contact KI12 is connected, second voltage type Relay coil KV21 obtains electric, and the contact of second voltage type relay action, second voltage type relay normally open contact KV22 connects Logical, then the standby Electromagnetic Valve Circuit that stops in emergency is powered, and standby magnetic valve HV2 obtains magnetic.

Above-described diesel engine stops in emergency the implementation method of Electromagnetic Valve Circuit failover, warning circuit, in addition to Following steps:

In stand-by power supply DC2 to during parking loop power supply, when power supply DC1 outputs of stopping revert to normal, first is electric Die mould relay coil KV11 obtains electric, the contact action of first voltage type relay：

(1) first voltage type relay two-way contact KV12 common port and normally opened termination are logical, recover parking power supply DC1 to Stop loop power supply；

(2) first voltage type relay normally closed contact KV13 disconnects, and the 3rd malfunction indicator lamp MIL3 lighted extinguishes.

During control diesel engine stops in emergency, the coil excessively stream for the magnetic valve HV1 that stops in emergency, when tertiary voltage type relay The tertiary voltage type relay normally closed contact KV33 that device control is serially connected in the Electromagnetic Valve Circuit that stops in emergency disconnects, the first current mode The contact of relay reverts to static state, i.e. the first current relay normally-closed contact KI13 is connected, do not influenceed to be in OFF state Fisrt fault indicator lamp MIL1.

During control diesel engine stops in emergency, when the coil excessively stream for the magnetic valve HV1 that stops in emergency, tertiary voltage type is controlled After relay power self-locking, the tertiary voltage type relay normally closed contact KV33 being serially connected in the Electromagnetic Valve Circuit that stops in emergency breaks Open, the contact of the second current relay reverts to static state, i.e. the second current relay normally opened contact KI22 disconnects, do not influenceed Tertiary voltage type relay power state in self-locking.

Above-described diesel engine stop in emergency Electromagnetic Valve Circuit failover, warning circuit implementation method in, it is described It is to be returned to be stopped in emergency to non-controlling diesel engine or when removing to its power supply source after tertiary voltage type relay power self-locking Discharge self-locking, refer to it is to be returned to second switch module K2 switch off or wait to remove stop power supply DC1 and stand-by power supply DC2 When, the contact of tertiary voltage type relay is static state by Dynamic- Recovery.

Beneficial effect：

The diesel engine of the present invention stops in emergency Electromagnetic Valve Circuit failover, warning circuit and its method, main feature：

(1) during the entire process of during diesel engine stops in emergency period and non-emergent parking, once parking power-fail, Stand-by power supply work is immediately switched to, and lights the 3rd malfunction indicator lamp MIL3, prompts user's parking power-fail；Treat parking electricity Source recovers normal, automatically returns to parking power supply power supply.

(2) during diesel engine stops in emergency, if the coil undercurrent for the magnetic valve HV1 that stops in emergency, passes through standby electromagnetism immediately Valve HV2 is stopped in emergency, and lights Fisrt fault indicator lamp MIL1, and the coil for prompting user to stop in emergency magnetic valve HV1 is owed Stream.

(3) during diesel engine stops in emergency, if the coil excessively stream for the magnetic valve HV1 that stops in emergency, cut-out immediately is stopped in emergency Electromagnetic Valve Circuit, the Electromagnetic Valve Circuit that stopped in emergency to cut-out carry out short-circuit protection, light the second malfunction indicator lamp MIL2, prompt to use Family is stopped in emergency magnetic valve HV1 coil excessively stream, and by means of the magnetic valve HV1 that stops in emergency coil undercurrent when be switched to it is standby Magnetic valve HV2 carries out method of stopping in emergency, and is stopped in emergency by standby magnetic valve HV2.

Brief description of the drawings

The diesel engine that Fig. 1 is the present invention stops in emergency the circuit structure diagram of Electromagnetic Valve Circuit failover, warning circuit；

In figure：KV11. first voltage type relay coil, KV12. first voltage type relay two-way contacts, KV13. One voltage-type relay normally closed contact, KV21. second voltage type relay coils, KV22. second voltage type relay normally opens touch Point, KV31. tertiary voltage type relay coils, KV32. tertiary voltage type relay normally open contacts, KV33. tertiary voltages type after Electrical equipment normally-closed contact, KV34. tertiary voltage type relay two-way contacts, KI11. the first current relay coils, KI12, KI13. the first current relay normally-closed contact, KI21. the second current relay coils, the current relay of KI22. second Normally opened contact, DC1. parking power supplys, DC2. stand-by power supplies, DC3. alarm power supplys, HV1. stop in emergency magnetic valve, HV2. standby electricities Magnet valve, MIL1. Fisrt fault indicator lamps, the malfunction indicator lamp of MIL2. second, the malfunction indicator lamp of MIL3. the 3rd, K1. first switches Module, K2. second switch modules, the switch modules of K3. the 3rd.

Embodiment

Electromagnetic Valve Circuit failover, warning circuit as shown in figure 1, diesel engine stops in emergency, including parking power supply DC1, Stand-by power supply DC2, alarm power supply DC3, first voltage type relay, second voltage type relay, tertiary voltage type relay, the One current relay, the second current relay, the magnetic valve HV1 that stops in emergency, standby magnetic valve HV2, Fisrt fault instruction Lamp MIL1, the second malfunction indicator lamp MIL2, the 3rd malfunction indicator lamp MIL3, first switch module K1, second switch module K2, Three switch module K3；The first voltage type relay coil KV11 directly power supply DC1 and connects with parking, parking power supply DC1's Positive pole is connected with first voltage type relay two-way contact KV12 normally opened end, stand-by power supply DC2 positive pole and first voltage Type relay two-way contact KV12 normal-closed end is connected, and stand-by power supply DC2 negative pole is connected with the negative pole for the power supply DC1 that stops Connect；First current relay coil KI11 is sequentially connected in series the second current relay coil KI21, tertiary voltage type relay Normally-closed contact KV33, the coil for the magnetic valve HV1 that stops in emergency, first switch module K1 switch after, the first current relay The coil KI11 other end is connected with first voltage type relay two-way contact KV12 common port, first switch module K1's The other end of switch is connected with the negative pole for the power supply DC1 that stops, and forming first with parking power supply DC1 or stand-by power supply DC2 stops Car loop, first parking loop is the Electromagnetic Valve Circuit that stops in emergency；Second voltage type relay normally open contact KV22 according to After the secondary standby magnetic valve HV2 of concatenation coil, second switch module K2 switch, second voltage type relay normally open contact KV22 The other end be connected with first voltage type relay two-way contact KV12 common port, second switch module K2 switch it is another One end is connected with the negative pole for the power supply DC1 that stops, and Article 2 parking loop, institute are formed with parking power supply DC1 or stand-by power supply DC2 Article 2 parking loop is stated as the standby Electromagnetic Valve Circuit that stops in emergency；The electricity of second current relay normally opened contact KI22 and the 3rd Die mould relay normally open contact KV32 phases simultaneously connect, and one end after connecing and first voltage type relay two-way contact KV12's is public End is connected, and standby electricity magnet valve HV2 coils and second switch are accessed after other end concatenation tertiary voltage type relay coil KV31 On the connecting line of module K2 switches, Article 3 parking loop, the Article 3 are formed with parking power supply DC1 or stand-by power supply DC2 Parking loop is magnetic valve excessively stream switching control loop of stopping in emergency；First current relay normally-closed contact KI12 one end with First voltage type relay two-way contact KV12 common port is connected, other end concatenation second voltage type relay coil KV21 Access afterwards on the connecting line that standby electricity magnet valve HV2 coils switch with second switch module K2, with parking power supply DC1 or stand-by power supply DC2 forms Article 4 parking loop, and the Article 4 parking loop is magnetic valve undercurrent switching control loop of stopping in emergency；First Voltage-type relay normally closed contact KV13 power supply DC3 and connects after concatenating the 3rd malfunction indicator lamp MIL3 with alarm, with power supply of alarming DC3 forms parking power-fail alarm circuit；Tertiary voltage type relay two-way contact KV34 common port and alarm power supply DC3 Positive pole be connected, tertiary voltage type relay two-way contact KV34 normally opened end concatenate after the second malfunction indicator lamp MIL2 with report Alert power supply DC3 negative pole is connected, and the magnetic valve excessively stream alarm circuit that stops in emergency is formed with alarm power supply DC3；Tertiary voltage type Relay two-way contact KV34 normal-closed end is sequentially connected in series the first current relay normally-closed contact KI13, Fisrt fault indicator lamp MIL1, the 3rd switch module K3 switch after with alarm power supply DC3 negative pole be connected, with alarm power supply DC3 form promptly stop Car magnetic valve undercurrent alarm circuit；First switch module K1 control terminal, second switch module K2 control terminal and the 3rd switch Module K3 control terminal is connected with each other to be connected with the output of diesel engine main control module afterwards.

Magnetic valve excessively stream switching control loop described above of stopping in emergency is used for the magnetic valve that stopped in emergency during stopping in emergency HV1 coil over-current detection switching control.

Magnetic valve undercurrent switching control loop described above of stopping in emergency is used for the magnetic valve that stopped in emergency during stopping in emergency HV1 coil undercurrent detection switching control.

Coil undercurrents of the Fisrt fault indicator lamp MIL1 described above for the magnetic valve HV1 that stopped in emergency during stopping in emergency Prompting, when Fisrt fault indicator lamp MIL1 is lighted, the Electromagnetic Valve Circuit that illustrate to stop in emergency is likely to contact poor electrical resistance and become greatly The magnetic valve HV1 that stops in emergency coil open circuit or the loop it is breaking elsewhere, also be possible to damage including institute's power supply source certainly It is bad to cause for stream deficiency.

Coil excessively streams of the second malfunction indicator lamp MIL2 described above for the magnetic valve HV1 that stopped in emergency during stopping in emergency Prompting, when the second malfunction indicator lamp MIL2 is lighted, the line for the magnetic valve HV1 that stopped in emergency in the Electromagnetic Valve Circuit that illustrates to stop in emergency Circle short circuit, is also possible to higher including institute's power supply source voltage certainly.

3rd malfunction indicator lamp MIL3 described above, which is used to stop when power supply DC1 fails, to be prompted, when the event of parking power supply the 3rd When barrier indicator lamp MIL3 is lighted, the power supply DC1 output voltages that illustrate to stop are less than first voltage type relay coil KV11 maintenance electricity Press or equal to zero, here when parking power supply DC1 output voltages less than first voltage type relay coil KV11 maintenance voltages or wait Power supply DC1 failures (or halting car power supply DC1 dead electricity or decompression) of stopping are regarded as when zero.

First voltage type relay coil KV11 described above rated voltage is more than parking power supply DC1 rated voltage, Be advantageous to the rated voltage for making first voltage type relay coil KV11 maintenance voltages close to parking power supply DC1, but ensure again The contact of first voltage type relay normally becomes dynamic from static, and the present invention is from first voltage type relay coil KV11's Rated voltage is equal to the 106% of parking power supply DC1 rated voltage.

When stopping in emergency when the electric current that magnetic valve HV1 coils flow through of stopping in emergency in its extinction current to maximum allowable When between electric current, the present invention assert that the coil for the magnetic valve HV1 that stops in emergency is in normal operating conditions, and otherwise, identification promptly stops Car Electromagnetic Valve Circuit breaks down.

The present invention assert that the output that can guarantee that the power supply DC1 that stopped during contact adhesive (action) of first voltage type relay is Normal output.

When first switch module K1, second switch module K2 and the 3rd switch module K3 described above are serviceable condition： Receive that diesel engine main control module sends stop in emergency (machine) control signal when during, the switch connection that accordingly controls, i.e., One switch module K1 switch connection, second switch module K2 switch connection, the 3rd switch module K3 switch connection；Not Receive that diesel engine main control module sends stop in emergency (machine) control signal when during, the switch that accordingly controls, which is in, disconnects shape The switch of state, i.e. first switch module K1 is off, second switch module K2 switch is off, the 3rd opens The switch for closing module K3 is off.

It is described above receive that diesel engine main control module sends stop in emergency (machine) control signal when during, that is, Say that stop in emergency Electromagnetic Valve Circuit failover, the warning circuit of diesel engine of the present invention is sent receiving diesel engine main control module Stop in emergency (machine) control signal when during, now diesel engine stops in emergency Electromagnetic Valve Circuit failover, warning circuit work Make during control diesel engine stops in emergency.

It is described above do not receive that diesel engine main control module sends stop in emergency (machine) control signal when during, also It is that stop in emergency Electromagnetic Valve Circuit failover, the warning circuit of diesel engine for saying the present invention is not receiving diesel engine main control module Send stop in emergency (machine) control signal when during, now diesel engine stop in emergency Electromagnetic Valve Circuit failover, alarm electricity Road is operated in non-controlling diesel engine and stopped in emergency period.

It is intact that described first switch module K1, second switch module K2 and the 3rd switch module K3 are assert in the present invention State.

Above-described diesel engine stop in emergency Electromagnetic Valve Circuit failover, warning circuit parking power supply DC1 with it is standby It is as follows with power supply DC2 handoff procedures：

3) stand-by power supply DC2 to parking loop power supply during, wait stop power supply DC1 output revert to normal when, first Voltage-type relay coil KV11 obtains electric, the contact action of first voltage type relay：

Above-described diesel engine stop in emergency Electromagnetic Valve Circuit failover, warning circuit control diesel engine promptly stop During car, identification first switch module K1 switch connection, second switch module K2 switch connection, the 3rd switch module K3's Switch connection, control the magnetic valve HV1 and standby magnetic valve HV2 that stops in emergency that there is following process：

1) when the coil for the magnetic valve HV1 that stops in emergency is in normal operating conditions, that is, the Electromagnetic Valve Circuit that stops in emergency is flowed through Electric current when the extinction current for the magnetic valve HV1 coils that stop in emergency is between maximum allowed current, the first current mode after The contact action of electrical equipment, the contact of the second current relay are in static state：

(1) the first current relay normally-closed contact KI12 disconnects, and second voltage type relay coil KV21 must not be electric, the The contact of two voltage-type relays is in static state, i.e. second voltage type relay normally open contact KV22 disconnects, stopped in emergency standby Electromagnetic Valve Circuit must not be electric, and standby magnetic valve HV2 is in loss of excitation；

(2) the first current relay normally-closed contact KI13 disconnects, and Fisrt fault indicator lamp MIL1 extinguishes；

(3) the second current relay normally opened contact KI22 disconnects, and tertiary voltage type relay coil KV31 must not be electric, the The contact of three voltage-type relays is in static state, i.e., in parallel to tertiary voltage with the second current relay normally opened contact KI22 The tertiary voltage type relay normally open contact KV32 of type relay power self-locking disconnects, and is serially connected in the Electromagnetic Valve Circuit that stops in emergency Tertiary voltage type relay normally closed contact KV33 connect, power supply DC3 is to Fisrt fault indicator lamp MIL1 and second for control alarm The tertiary voltage type relay two-way contact KV34 of malfunction indicator lamp MIL2 power supplies common port disconnects with normally opened end, the second failure Indicator lamp MIL2 extinguishes；

2) when the coil undercurrent for the magnetic valve HV1 that stops in emergency, that is, the electric current for flowing through the Electromagnetic Valve Circuit that stops in emergency are less than tightly During the extinction current of anxious electromagnetic valve for braking HV1 coils, the contact of the first current relay and the second current relay Contact be in static state：

First current relay normally-closed contact KI12 connect, second voltage type relay coil KV21 obtain it is electric, second The contact action of voltage-type relay, i.e. second voltage type relay normally open contact KV22 are connected, and stop in emergency standby magnetic valve Loop is powered, and standby magnetic valve HV2 obtains magnetic；

(2) the second current relay normally opened contact KI22 disconnects, and tertiary voltage type relay coil KV31 must not be electric, the The contact of three voltage-type relays is in static state, i.e., in parallel to tertiary voltage with the second current relay normally opened contact KI22 The tertiary voltage type relay normally open contact KV32 of type relay power self-locking disconnects, and is serially connected in the Electromagnetic Valve Circuit that stops in emergency Tertiary voltage type relay normally closed contact KV33 connect, power supply DC3 is to Fisrt fault indicator lamp MIL1 and second for control alarm The tertiary voltage type relay two-way contact KV34 of malfunction indicator lamp MIL2 power supplies common port and normally opened end disconnects, and with it is normally closed Termination is logical：

1. tertiary voltage type relay two-way contact KV34 common port disconnects with normally opened end, the second malfunction indicator lamp MIL2 Extinguish；

2. tertiary voltage type relay two-way contact KV34 common port is connected with normal-closed end, the first current relay is normal Closed contact KI13 is connected, and Fisrt fault indicator lamp MIL1 is lighted, the coil undercurrent for prompting user to stop in emergency magnetic valve HV1；

3) when the coil excessively stream for the magnetic valve HV1 that stops in emergency, that is, the electric current for flowing through the Electromagnetic Valve Circuit that stops in emergency are more than tightly During the maximum allowed current of anxious electromagnetic valve for braking HV1 coils, the contact of the first current relay and the second current relay Contact act：

Second current relay normally opened contact KI22 connect, tertiary voltage type relay coil KV31 obtain it is electric, the 3rd The contact action of voltage-type relay：

1. the tertiary voltage type relay normally closed contact KV33 being serially connected in the Electromagnetic Valve Circuit that stops in emergency disconnects, cut-out is tight Jerk car Electromagnetic Valve Circuit is powered, and to stopping in emergency, Electromagnetic Valve Circuit carries out short-circuit protection；

2. the tertiary voltage type relay normally open contact KV32 in parallel with the second current relay normally opened contact KI22 connects Lead to tertiary voltage type relay power self-locking；

3. the 3rd electricity that control alarm power supply DC3 powers to Fisrt fault indicator lamp MIL1 and the second malfunction indicator lamp MIL2 Die mould relay two-way contact KV34 common port and normally opened termination are logical, and are disconnected with normal-closed end：

A. tertiary voltage type relay two-way contact KV34 common port and normally opened termination are logical, the second malfunction indicator lamp MIL2 Light, the coil excessively stream for prompting user to stop in emergency magnetic valve HV1；

B. tertiary voltage type relay two-way contact KV34 common port disconnects with normal-closed end, Fisrt fault indicator lamp MIL1 Extinguish；

It is 4. to be returned to stop in emergency or wait to remove to it to non-controlling diesel engine after tertiary voltage type relay power self-locking Discharge self-locking during institute's power supply source, the contact of tertiary voltage type relay is static state by Dynamic- Recovery；

(2) the first current relay normally-closed contact KI12 disconnects, and second voltage type relay coil KV21 must not be electric, the The contact of two voltage-type relays is in static state, i.e. second voltage type relay normally open contact KV22 disconnects, stopped in emergency standby Electromagnetic Valve Circuit no power, standby magnetic valve HV2 losss of excitation：

Above-described diesel engine stop in emergency Electromagnetic Valve Circuit failover, warning circuit control diesel engine promptly stop During car, identification first switch module K1 switch connection, second switch module K2 switch connection, the 3rd switch module K3's Switch connection, the magnetic valve HV1 that stops in emergency, which breaks down, is switched to standby magnetic valve HV2 processes also including as follows:

1) control diesel engine stop in emergency during, the coil excessively stream for the magnetic valve HV1 that stops in emergency, when tertiary voltage type after The tertiary voltage type relay normally closed contact KV33 that electrical equipment control is serially connected in the Electromagnetic Valve Circuit that stops in emergency disconnects, the first electric current The contact of type relay reverts to static state, i.e. the first current relay normally-closed contact KI13 is connected, and does not influence in extinguishing shape The Fisrt fault indicator lamp MIL1 of state；

2) during control diesel engine stops in emergency, when the coil excessively stream for the magnetic valve HV1 that stops in emergency, tertiary voltage is controlled After type relay power self-locking, the tertiary voltage type relay normally closed contact KV33 being serially connected in the Electromagnetic Valve Circuit that stops in emergency breaks Open, the contact of the second current relay reverts to static state, i.e. the second current relay normally opened contact KI22 disconnects, do not influenceed Tertiary voltage type relay power state in self-locking.

It is to be returned to stop in emergency or treat to non-controlling diesel engine after above-described tertiary voltage type relay power self-locking Discharge self-locking when removing to its power supply source, refer to it is to be returned to second switch module K2 switch off or wait to remove parking electricity During source DC1 and stand-by power supply DC2, the contact of tertiary voltage type relay is static state by Dynamic- Recovery.

Stop in emergency Electromagnetic Valve Circuit failover, warning circuit of above-described diesel engine is urgent in non-controlling diesel engine During parking, switching off for first switch module K1 is assert, second switch module K2's switches off, the 3rd switch module K3 Switch off, stop in emergency magnetic valve HV1 and standby magnetic valve HV2 of control has following process：

1) the magnetic valve HV1 and standby magnetic valve HV2 that stops in emergency is in loss of excitation；

2) Fisrt fault indicator lamp MIL1 extinguishes；

3) tertiary voltage type relay coil KV31 must not electricity, the contact of tertiary voltage type relay is in static state, i.e., the Three voltage-type relay two-way contact KV34 normally opened end disconnects with common port, and the second malfunction indicator lamp MIL2 extinguishes.

Claims

Electromagnetic Valve Circuit failover, warning circuit 1. diesel engine stops in emergency, including parking power supply (DC1), stand-by power supply (DC2), alarm power supply (DC3), first voltage type relay, second voltage type relay, tertiary voltage type relay, the first electricity Flow pattern relay, the second current relay, the magnetic valve that stops in emergency (HV1), standby magnetic valve (HV2), Fisrt fault instruction Lamp (MIL1), the second malfunction indicator lamp (MIL2), the 3rd malfunction indicator lamp (MIL3), first switch module (K1), second switch Module (K2), the 3rd switch module (K3)；Characterized in that, the first voltage type relay coil (KV11) directly with parking Power supply (DC1) simultaneously connects, and the positive pole of parking power supply (DC1) is connected with the normally opened end of first voltage type relay two-way contact (KV12) Connect, the positive pole of stand-by power supply (DC2) is connected with the normal-closed end of first voltage type relay two-way contact (KV12), stand-by power supply (DC2) negative pole is connected with the negative pole of parking power supply (DC1)；First current relay coil (KI11) is sequentially connected in series second Current relay coil (KI21), tertiary voltage type relay normally closed contact (KV33), the line of the magnetic valve that stops in emergency (HV1) Circle, first switch module (K1) switch after, the other end of the first current relay coil (KI11) and first voltage type after The common port of electrical equipment two-way contact (KV12) is connected, the other end and the parking power supply of the switch of first switch module (K1) (DC1) negative pole is connected, with parking power supply (DC1) or stand-by power supply (DC2) form first parking loop, described first Parking loop is the Electromagnetic Valve Circuit that stops in emergency；Second voltage type relay normally open contact (KV22) is sequentially connected in series standby magnetic valve (HV2) after coil, the switch of second switch module (K2), the other end of second voltage type relay normally open contact (KV22) with The common port of first voltage type relay two-way contact (KV12) is connected, the other end of the switch of second switch module (K2) with The negative pole of parking power supply (DC1) is connected, and Article 2 parking loop, institute are formed with parking power supply (DC1) or stand-by power supply (DC2) Article 2 parking loop is stated as the standby Electromagnetic Valve Circuit that stops in emergency；Second current relay normally opened contact (KI22) and the 3rd Voltage-type relay normally open contact (KV32) mutually simultaneously connects, and one end after connecing and first voltage type relay two-way contact (KV12) Common port be connected, the other end concatenation tertiary voltage type relay coil (KV31) afterwards access standby electricity magnet valve (HV2) coil With on the connecting line of second switch module (K2) switch, Article 3 parking is formed with parking power supply (DC1) or stand-by power supply (DC2) Loop, the Article 3 parking loop is magnetic valve excessively stream switching control loop of stopping in emergency；First current relay is normally closed One end of contact (KI12) is connected with the common port of first voltage type relay two-way contact (KV12), other end concatenation second Voltage-type relay coil (KV21) accesses the connecting line of standby electricity magnet valve (HV2) coil and second switch module (K2) switch afterwards On, Article 4 parking loop is formed with parking power supply (DC1) or stand-by power supply (DC2), the Article 4 parking loop is urgent Electromagnetic valve for braking undercurrent switching control loop；First voltage type relay normally closed contact (KV13) concatenates the 3rd malfunction indicator lamp (MIL3) (DC3) and connect with alarm power supply afterwards, parking power-fail alarm circuit is formed with alarm power supply (DC3)；Tertiary voltage The common port of type relay two-way contact (KV34) is connected with the positive pole of alarm power supply (DC3), and tertiary voltage type relay is double Negative pole of the second malfunction indicator lamp (MIL2) afterwards with alarm power supply (DC3) is concatenated to the normally opened end of contact (KV34) to be connected, with Alarm power supply (DC3) forms the magnetic valve excessively stream alarm circuit that stops in emergency；Tertiary voltage type relay two-way contact (KV34) Normal-closed end is sequentially connected in series the first current relay normally-closed contact (KI13), Fisrt fault indicator lamp (MIL1), the 3rd switching molding Negative pole after the switch of block (K3) with alarm power supply (DC3) is connected, and forming the magnetic valve that stops in emergency with alarm power supply (DC3) owes Flow alarm circuit；The control terminal of first switch module (K1), the control terminal and the 3rd switch module of second switch module (K2) (K3) it is connected after control terminal is connected with each other with the output of diesel engine main control module.
Electromagnetic Valve Circuit failover, warning circuit 2. a kind of diesel engine according to claim 1 stops in emergency, its feature It is, the rated current of the first current relay coil (KI11), which is equal to, stops in emergency magnetic valve (HV1) coil most Small maintenance electric current；The rated current of the second current relay coil (KI21) is equal to magnetic valve (HV1) line that stops in emergency The maximum allowed current of circle.
Electromagnetic Valve Circuit failover, warning circuit 3. a kind of diesel engine according to claim 1 stops in emergency, its feature It is, described first voltage type relay two-way contact (KV12), second voltage type relay normally open contact (KV22), and The maximum current that tertiary voltage type relay normally closed contact (KV33) allows to flow through is equal to or the volume more than parking power supply (DC1) Determine electric current.
Electromagnetic Valve Circuit failover, warning circuit 4. a kind of diesel engine according to claim 2 stops in emergency, its feature It is, the extinction current of the described magnetic valve that stops in emergency (HV1) coil is to refer to guarantee to stop in emergency magnetic valve (HV1) minimum current of normal work.
Electromagnetic Valve Circuit failover, warning circuit 5. a kind of diesel engine according to claim 2 stops in emergency, its feature It is, the maximum allowed current of the described magnetic valve that stops in emergency (HV1) coil is to refer to guarantee and will not burn out stop in emergency The maximum operating currenbt of magnetic valve (HV1) coil.
Electromagnetic Valve Circuit failover, alarm electricity 6. a kind of diesel engine according to claims 1 to 3 any bar stops in emergency The implementation method on road, it is characterised in that comprise the following steps:

First, stop power supply (DC1) and stand-by power supply (DC2) handoff procedure

1) when stop power supply (DC1) output for it is normal when, first voltage type relay coil (KV11) it is electric, first voltage type after The contact action of electrical equipment：

(1) the common port of first voltage type relay two-way contact (KV12) and normally opened termination are logical, and parking power supply (DC1) is to parking Loop power supply；

(2) first voltage type relay normally closed contact (KV13) disconnects, and the 3rd malfunction indicator lamp (MIL3) is extinguished；

2) when the power supply (DC1) that stops fails, first voltage type relay coil (KV11) dead electricity, first voltage type relay Contact reverts to static state：

(1) the common port of first voltage type relay two-way contact (KV12) is connected with normal-closed end, is switched to stand-by power supply (DC2) To parking loop power supply；

(2) first voltage type relay normally closed contact (KV13) is connected, and the 3rd malfunction indicator lamp (MIL3) is lighted, and prompts user to stop Car power supply (DC1) fails；

2nd, the process of stop in emergency magnetic valve (HV1) and standby magnetic valve (HV2) is controlled

1) during non-controlling diesel engine stops in emergency, switching off for first switch module (K1), second switch module are assert (K2) switch off, the 3rd switch module (K3's) switches off：

(1) stop in emergency magnetic valve (HV1) and standby magnetic valve (HV2) is in loss of excitation；

(2) Fisrt fault indicator lamp (MIL1) extinguishes；

(3) tertiary voltage type relay coil (KV31) must not be electric, and the contact of tertiary voltage type relay is in static, i.e., and the 3rd The normally opened end of voltage-type relay two-way contact (KV34) disconnects with common port, and the second malfunction indicator lamp (MIL2) is extinguished；

2) during control diesel engine stops in emergency, the switch connection of first switch module (K1), second switch module are assert (K2) switch connection, the switch connection of the 3rd switch module (K3)：

(1) when the coil of the magnetic valve that stops in emergency (HV1) is in normal operating conditions, that is, the Electromagnetic Valve Circuit that stops in emergency is flowed through Electric current when the extinction current of the magnetic valve that stops in emergency (HV1) coil is between maximum allowed current, the first current mode after The contact action of electrical equipment, the contact of the second current relay are in static state：

1. the first current relay normally-closed contact (KI12) disconnects, second voltage type relay coil (KV21) must not be electric, the The contact of two voltage-type relays is in static state, i.e. second voltage type relay normally open contact (KV22) disconnects, and stops in emergency standby Must not be electric with Electromagnetic Valve Circuit, standby magnetic valve (HV2) is in loss of excitation；

2. the first current relay normally-closed contact (KI13) disconnects, Fisrt fault indicator lamp (MIL1) extinguishes；

3. the second current relay normally opened contact (KI22) disconnects, tertiary voltage type relay coil (KV31) must not be electric, the The contact of three voltage-type relays is in static state, i.e., in parallel with the second current relay normally opened contact (KI22) to the 3rd electricity The tertiary voltage type relay normally open contact (KV32) of die mould relay power self-locking disconnects, and is serially connected in the magnetic valve that stops in emergency and returns Tertiary voltage type relay normally closed contact (KV33) in road is connected, and controls alarm power supply (DC3) to Fisrt fault indicator lamp (MIL1) and the second malfunction indicator lamp (MIL2) power supply tertiary voltage type relay two-way contact (KV34) common port with often Beginning disconnects, and the second malfunction indicator lamp (MIL2) is extinguished；

(2) when the coil undercurrent of the magnetic valve that stops in emergency (HV1), that is, the electric current for flowing through the Electromagnetic Valve Circuit that stops in emergency are less than promptly During the extinction current of electromagnetic valve for braking (HV1) coil, the contact of the first current relay and the second current relay Contact be in static state：

1. the first current relay normally-closed contact (KI12) is connected, second voltage type relay coil (KV21) must be electric, second The contact action of voltage-type relay, i.e. second voltage type relay normally open contact (KV22) are connected, and stop in emergency standby electromagnetism Valve loop is powered, and standby magnetic valve (HV2) obtains magnetic；

2. the second current relay normally opened contact (KI22) disconnects, tertiary voltage type relay coil (KV31) must not be electric, the The contact of three voltage-type relays is in static state, i.e., in parallel with the second current relay normally opened contact (KI22) to the 3rd electricity The tertiary voltage type relay normally open contact (KV32) of die mould relay power self-locking disconnects, and is serially connected in the magnetic valve that stops in emergency and returns Tertiary voltage type relay normally closed contact (KV33) in road is connected, and controls alarm power supply (DC3) to Fisrt fault indicator lamp (MIL1) and the second malfunction indicator lamp (MIL2) power supply tertiary voltage type relay two-way contact (KV34) common port with often Beginning disconnects, and is connected with normal-closed end：

A. the common port of tertiary voltage type relay two-way contact (KV34) disconnects with normally opened end, the second malfunction indicator lamp (MIL2) Extinguish；

B. the common port of tertiary voltage type relay two-way contact (KV34) is connected with normal-closed end, and the first current relay is normally closed Contact (KI13) is connected, and Fisrt fault indicator lamp (MIL1) is lighted, and the coil for prompting user to stop in emergency magnetic valve (HV1) is owed Stream；

(3) when the coil excessively stream of the magnetic valve that stops in emergency (HV1), that is, the electric current for flowing through the Electromagnetic Valve Circuit that stops in emergency are more than promptly During the maximum allowed current of electromagnetic valve for braking (HV1) coil, the contact of the first current relay and the second current relay Contact act：

1. the second current relay normally opened contact (KI22) is connected, tertiary voltage type relay coil (KV31) must be electric, the 3rd The contact action of voltage-type relay：

A. the tertiary voltage type relay normally closed contact (KV33) being serially connected in the Electromagnetic Valve Circuit that stops in emergency disconnects, and cut-out is urgent Electromagnetic valve for braking loop is powered, and to stopping in emergency, Electromagnetic Valve Circuit carries out short-circuit protection；

B. the tertiary voltage type relay normally open contact (KV32) in parallel with the second current relay normally opened contact (KI22) connects Lead to tertiary voltage type relay power self-locking；

C. the 3rd that alarm power supply (DC3) is powered to Fisrt fault indicator lamp (MIL1) and the second malfunction indicator lamp (MIL2) is controlled The common port of voltage-type relay two-way contact (KV34) and normally opened termination are logical, and are disconnected with normal-closed end：

The common port of tertiary voltage type relay two-way contact (KV34) and normally opened termination are logical, the second malfunction indicator lamp (MIL2) point Coil excessively stream that is bright, prompting user to stop in emergency magnetic valve (HV1)；

The common port of tertiary voltage type relay two-way contact (KV34) disconnects with normal-closed end, and Fisrt fault indicator lamp (MIL1) puts out Go out；

D. it is to be returned to stop in emergency or wait to remove to it to be supplied to non-controlling diesel engine after the self-locking of tertiary voltage type relay power Discharge self-locking during power supply, the contact of tertiary voltage type relay is static state by Dynamic- Recovery；

2. the first current relay normally-closed contact (KI12) disconnects, second voltage type relay coil (KV21) must not be electric, the The contact of two voltage-type relays is in static state, i.e. second voltage type relay normally open contact (KV22) disconnects, and stops in emergency standby With Electromagnetic Valve Circuit no power, standby magnetic valve (HV2) loss of excitation：

Until when the tertiary voltage type relay normally closed contact (KV33) being serially connected in the Electromagnetic Valve Circuit that stops in emergency disconnects, first The contact of current relay reverts to static state, i.e. the first current relay normally-closed contact (KI12) is connected, second voltage type Relay coil (KV21) obtains electric, the contact action of second voltage type relay, second voltage type relay normally open contact (KV22) connect, then the standby Electromagnetic Valve Circuit that stops in emergency is powered, and standby magnetic valve (HV2) obtains magnetic.
The implementation method of Electromagnetic Valve Circuit failover, warning circuit 7. diesel engine according to claim 6 stops in emergency, Characterized in that, also comprise the following steps:

In stand-by power supply (DC2) to during parking loop power supply, when power supply (DC1) output of stopping reverts to normal, first is electric Die mould relay coil (KV11) obtains electric, the contact action of first voltage type relay：

(1) the common port of first voltage type relay two-way contact (KV12) and normally opened termination are logical, recover parking power supply (DC1) to Stop loop power supply；

(2) first voltage type relay normally closed contact (KV13) disconnects, and the 3rd malfunction indicator lamp (MIL3) lighted is extinguished.
The implementation method of Electromagnetic Valve Circuit failover, warning circuit 8. diesel engine according to claim 6 stops in emergency, Characterized in that, also comprise the following steps:

During control diesel engine stops in emergency, the coil excessively stream of the magnetic valve that stops in emergency (HV1), when tertiary voltage type relay The tertiary voltage type relay normally closed contact (KV33) that control is serially connected in the Electromagnetic Valve Circuit that stops in emergency disconnects, the first current mode The contact of relay reverts to static state, i.e. the first current relay normally-closed contact (KI13) is connected, and does not influence in extinguishing shape The Fisrt fault indicator lamp (MIL1) of state.
The implementation method of Electromagnetic Valve Circuit failover, warning circuit 9. diesel engine according to claim 6 stops in emergency, Characterized in that, also comprise the following steps:

During control diesel engine stops in emergency, when the coil excessively stream of the magnetic valve that stops in emergency (HV1), control tertiary voltage type after After electrical equipment energization self-locking, the tertiary voltage type relay normally closed contact (KV33) being serially connected in the Electromagnetic Valve Circuit that stops in emergency is disconnected Open, the contact of the second current relay reverts to static state, i.e. the second current relay normally opened contact (KI22) disconnects, not shadow Ring the tertiary voltage type relay power state in self-locking.
Electromagnetic Valve Circuit failover, the realization side of warning circuit 10. diesel engine according to claim 6 stops in emergency Method, it is characterised in that to be returned to stop in emergency or treat to non-controlling diesel engine after the tertiary voltage type relay power self-locking Discharge self-locking when removing to its power supply source, refer to it is to be returned to second switch module (K2) switch off or wait remove parking Power supply (DC1) and during stand-by power supply (DC2), the contact of tertiary voltage type relay are static state by Dynamic- Recovery.