CN107905894A - Diesel engine stops in emergency Electromagnetic Valve Circuit failover, warning circuit and its method - Google Patents
Diesel engine stops in emergency Electromagnetic Valve Circuit failover, warning circuit and its method Download PDFInfo
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- CN107905894A CN107905894A CN201711102317.6A CN201711102317A CN107905894A CN 107905894 A CN107905894 A CN 107905894A CN 201711102317 A CN201711102317 A CN 201711102317A CN 107905894 A CN107905894 A CN 107905894A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
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Abstract
Stop in emergency Electromagnetic Valve Circuit failover the invention discloses a kind of diesel engine, warning circuit and its method, circuit is, there is undercurrent to detect electric current relay including string, the Electromagnetic Valve Circuit that stops in emergency of over-current detection electric current relay, stop in emergency spare Electromagnetic Valve Circuit, stop in emergency solenoid valve overcurrent switching control circuit, stop in emergency solenoid valve undercurrent switching control circuit, 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 solenoid valve overcurrent alarm circuit, stop in emergency solenoid 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; spare solenoid valve is switched to when solenoid valve undercurrent or the overcurrent of stopping in emergency to stop 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 solenoid valve overcurrent, the Electromagnetic Valve Circuit that stops in emergency to cut-out carries out short-circuit protection.
Description
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 dies and oil-break two ways stopping in emergency for diesel engine, dies
Mode is the installation Electromagnetic Control valve at inlet and outlet mouth, can in case of emergency control valve be died；Oil-break mode is
Install oil-break Electromagnetic Control valving additional on oil circuit, can urgent oil-break when failure occurs.These Electromagnetic Control valves are
The usually signified solenoid valve that stops in emergency.It is designed when the solenoid valve that the solenoid valve that stops in emergency uses is normal-closed electromagnetic valve
Stop in emergency Electromagnetic Valve Circuit for degaussing (dead electricity) stop；When the solenoid valve that the solenoid valve that stops in emergency uses is open type electricity
During magnet valve it is designed stop in emergency Electromagnetic Valve Circuit for magnetic (energizations) stops.Magnetic is stopped and obtains in degaussing (dead electricity) (to lead to
Electricity) parking two methods in, prior art Literature record：Diesel engine is died with degaussing or the solenoid valve of oil-break is set
Electromagnetic Valve Circuit monitoring alarm method is many in the circuit that stops in emergency put, and does not just sketch herein, only to degaussing parking method
Main problem reiterates：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, influences diesel engine normal operation.And diesel engine with magnetic died or the solenoid valve of oil-break set the circuit that stops in emergency
Middle Electromagnetic Valve Circuit monitoring alarm method is seldom.Diesel engine with magnetic is died or the solenoid valve of oil-break is set urgent stops
The car circuit course of work is：The solenoid valve that stops in emergency when diesel engine works normally is in dead electricity (loss of excitation) state, i.e., promptly stops
During car solenoid valve power failure state its control die, oil-break valve is logical；When in the case of urgent and significant trouble to urgent
Electromagnetic valve for braking is powered (magnetic), closes the dying of its control, oil-break valve, realizes that diesel engine stops in emergency.However, for
Diesel engine when need to stop in emergency, is stopped in emergency with obtaining in the circuit that stops in emergency that magnetic is died or the solenoid valve of oil-break is set
Solenoid valve normal power-up diesel engine ability emergency stop, when line fracture, coil open circuit, coil occurs in the electromagnetic valve coil that stops in emergency
Short circuit and power supply circuit loose contact need to stop in emergency when failure, just can not close it by the solenoid valve that stops in emergency
Control die, oil-break valve, cause failure of stopping in emergency, so that the safety of diesel engine cannot ensure.Therefore for
The diesel engine that magnetic is died or the solenoid valve of oil-break is set stops in emergency circuit, to ensure that diesel engine (diesel-driven generator) is pacified
The execution of full cut-off machine, is badly in need of being detected and alarming to whether the corresponding Electromagnetic Valve Circuit that stops in emergency fails.Although there is document
Record, as number of patent application is：201510846141.X a kind of diesel engine stop in emergency Electromagnetic Valve Circuit failure alarm circuit
And its alarm method, the redundant configuration equipped with stand-by power supply and solenoid valve (being similarly normal-open electromagnetic valve), solves：Parking electricity
Stand-by power supply power supply is switched to during the dead electricity of source；Control recognizes Electromagnetic Valve Circuit disconnection of stopping in emergency when stopping in emergency, be switched to
The work of spare solenoid valves, passes through the dying of spare solenoid valve closing control, oil-break path.Seem perfect and reality is set
On may realize：Stand-by power supply power supply is switched to during parking power loss；Stop in emergency electricity when control is stopped in emergency
Magnet valve circuit disconnects, and is switched to the work of spare solenoid valves, passes through the dying of spare solenoid valve closing control, oil-break path.
On when stop power loss when can not possibly be switched to stand-by power supply power supply the reasons why be：Because specific control parking power supply with
The rated current of the current relay coil (the second current relay coil) of stand-by power supply switching is greater than or equal to parking
The rated current of power supply, and it is impossible as the electric current that the first alarm lamp flows through using LED with the current relay coil tandem
More than or equal to parking power supply rated current, otherwise will not with LED as alarm lamp；When stop power loss when, it is assumed that
It is that the electric current that first alarm lamp flows through is greater than or equal to parking power supply to flow through with the current relay coil tandem using LED
Rated current, which completes parking power supply and stand-by power supply switch operating, so requires alarm again
The rated current of power supply be greater than or equal to parking power supply rated current, otherwise cannot normally complete switching parking power supply with it is standby
Switched with power supply；Again because of current relay coil (the 3rd current relay with being concatenated using LED as the second alarm lamp
Coil) rated current also require that more than or equal to parking power supply rated current, so in order to ensure alarm power supply
Normal work, just necessarily requires the rated current of alarm power supply to be greater than or equal to more than two times of the rated current of parking power supply, and
The rated current requirement of alarm power supply can not possibly be relevant with the rated current for the power supply that stops actually in engineering design, single
Solely be also impossible to the current requirements that flow through of alarm lamp for power supply power supply of alarming it is relevant with the rated current of parking power supply, with
And the specified electricity with parking power supply is also impossible to the rated current of the current relay coil requirement for power supply power supply of alarming
Flow relevant, equally unlikely require the electric current that each alarm lamp flows through to be greater than or equal to the specified of power supply for its power supply
Electric current.On stopping in emergency when control is stopped in emergency, Electromagnetic Valve Circuit disconnects, it is impossible to is switched to spare solenoid valves work
As the reasons why be：The current relay (the first current relay) for being serially connected in the Electromagnetic Valve Circuit that stops in emergency identifies at all
Less than the situation for Electromagnetic Valve Circuit disconnection of stopping in emergency, because being serially connected in the current relay for the Electromagnetic Valve Circuit that stops in emergency
Specified electricity of coil (the first current relay coil) its rated current of invention setting requirements more than or equal to parking power supply
Stream, so that identify is less than emergency stop car Electromagnetic Valve Circuit disconnection, concrete reason at all：Stop in emergency 1. can only recognize
The short-circuit situation of Electromagnetic Valve Circuit, because when Electromagnetic Valve Circuit normal power-up of stopping in emergency works, set generation is just
Normal electric current can not possibly be greater than or equal to the rated current of parking power supply, if caused electric current is greater than or equal to parking power supply
Rated current, there is short circuit phenomenon in that Electromagnetic Valve Circuit that stops in emergency certainly；2. returned when being serially connected in the solenoid valve that stops in emergency
The current relay on road does not recognize the rated current more than or equal to parking power supply, can only illustrate the electromagnetism that stops in emergency
Valve circuit institute galvanization is in normal range (NR) or is less than normal value or direct breaking current etc. because loose contact resistance becomes high current
In zero；3. because the current relay for being serially connected in the Electromagnetic Valve Circuit that stops in emergency can only recognize the solenoid valve that stops in emergency and return
The short-circuit situation on road, so that no matter the Electromagnetic Valve Circuit institute's galvanization that occurs stopping in emergency also is less than normally in normally
When (such as open circuit)：Stop assuming that the 3rd current relay coil institute galvanization being serially connected on the second alarm lamp is greater than or equal to
The rated current of car power supply, then spare solenoid valve be similarly in obtain electric working status；Actually it is serially connected on the second alarm lamp
3rd current relay coil institute galvanization can not possibly be greater than or equal to the rated current of parking power supply, stop in emergency so working as
For Electromagnetic Valve Circuit institute's galvanization no matter being in normal, being also less than spare solenoid valve when normal (such as open circuit) must not be electric；4. because
When the current relay for being serially connected in the Electromagnetic Valve Circuit that stops in emergency can only recognize the short-circuit of the Electromagnetic Valve Circuit that stops in emergency
Situation, when the electric current for the Electromagnetic Valve Circuit that stops in emergency is greater than or equal to the rated current of parking power supply, to the electromagnetism that stops in emergency
Valve circuit is not cut off, and in the same old way in "on" position, and has been turned off the spare solenoid valve that has no problem, therefore is not had and promptly stopped
Car Electromagnetic Valve Circuit short-circuit protection is made, and can not be switched to spare solenoid valve and stop in emergency, certainly can not be to parking electricity
Play overload protective function in source.Further reaffirm：Cause is serially connected in the specified electricity of two current relay coils on alarm lamp
Stream is required to the rated current for being greater than or equal to parking power supply, and the rated current of hardly possible to alarm power supply is greater than or equal to parking electricity
More than two times of the rated current in source, and each with LED as alarm lamp light when the electric current that flows through be greater than or equal to parking electricity
The rated current in source, otherwise, the current relay being serially connected on alarm lamp is had no idea work.Certainly there is patent application
Number it is：201510845456.2 a kind of diesel-driven generator stop in emergency Electromagnetic Valve Circuit failure alarm circuit and its alarm side
Method, the redundant configuration equipped with stand-by power supply and solenoid valve (being similarly normal-open electromagnetic valve), solves：Cut during parking power loss
Change to stand-by power supply power supply；Control recognizes Electromagnetic Valve Circuit disconnection of stopping in emergency when stopping in emergency, be switched to spare solenoid valve
Energization work, passes through the dying of spare solenoid valve closing control, oil-break path.Emitting seemingly realizes above-mentioned function, but except existing
Number of patent application is：201510846141.X a kind of diesel engine stop in emergency Electromagnetic Valve Circuit failure alarm circuit and its report
Alarm method it is all there are the problem of and defect, be the directly confession of electricity caused by diesel-driven generator also there are power supply used in alarm lamp
Electricity, after diesel-driven generator emergency stop car alarm lamp instruction can't see at all because when controlling diesel-driven generator emergency stop, user is not
Alarm lamp may be stared to see, it may be noted that once alarm lamp instruction state only after emergency stop, but diesel-driven generator emergency stop is not sent out
How electricity, what is said or talked about have power supply output.And froming the perspective of from number of patent application 201510846141.X and number of patent application 201510845456.2
Beneficial effect content described in bright book is seen：Diesel engine (diesel generator) stop in emergency Electromagnetic Valve Circuit Failure Alarm electricity
Road, can carry out self-shield in time in device fails, to ensure its Electromagnetic Valve Circuit normal work of stopping in emergency, from
And realize the automatic emergency stop-working protection of diesel engine (diesel generator) in abnormal cases.Further illustrate patent application
The attached drawing of number 201510846141.X and number of patent application 201510845456.2 is diesel engine main control module to diesel engine (bavin
Diesel engine) the Electromagnetic Valve Circuit failure alarm circuit that stops in emergency sends emergency shutdown instruction, and controlling switch module switch connects
Diesel engine (diesel generator) after logical stops in emergency Electromagnetic Valve Circuit failure alarm circuit structure diagram, that is to say, that
The attached drawing of number of patent application 201510846141.X and number of patent application 201510845456.2 is bavin when stopping in emergency
Oil machine (diesel generator) is stopped in emergency Electromagnetic Valve Circuit failure alarm circuit structure diagram, so as to illustrate further
(diesel engine is sent out for number of patent application 201510846141.X and diesel engine described in number of patent application 201510845456.2
Motor) use stop in emergency solenoid valve for magnetic electromagnetic valve for braking.
The content of the invention
The purpose of the present invention in order to solve defect existing in the prior art, 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, realizes that parking power-fail is switched to stand-by power supply power supply, the Electromagnetic Valve Circuit undercurrent that ought stop in emergency when stopping in emergency,
Overcurrent, is switched to spare solenoid valve and stops in emergency, and when solenoid valve overcurrent of stopping in emergency also carries out short-circuit protection, ensures tight
Anxious vehicle-parking circuit normal work；And indicator light is carried out to failure and is prompted respectively.
In order to realize above-mentioned purpose, the technical solution 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 electric current
Type relay, the second current relay, the solenoid valve HV1 that stops in emergency, spare solenoid valve HV2, Fisrt fault indicator light
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, controllable silicon SCR, resistance R1, resistance R2；The first voltage type relay coil KV11 directly with parking
Power supply DC1 simultaneously connects, and the cathode of parking power supply DC1 is connected with the normally open end of first voltage type relay two-way contact KV12, standby
It is connected with the cathode of power supply DC2 with the normal-closed end of first voltage type relay two-way contact KV12, stand-by power supply DC2's is negative
Pole is connected with the anode for the power supply DC1 that stops；The switch of first switch module K1 is sequentially connected in series the first current relay coil
KI11, the second current relay coil KI21, tertiary voltage type relay normally closed contact KV33, stop in emergency solenoid valve HV1
Coil after, the other end of the switch of first switch module K1 and the common port of first voltage type relay two-way contact KV12
It is connected, the other end of the coil for the solenoid valve HV1 that stops in emergency is connected with the anode for the power supply DC1 that stops, with the power supply that stops
DC1 or stand-by power supply DC2 forms first parking circuit, and first parking circuit is the Electromagnetic Valve Circuit that stops in emergency；The
The switch of two switch module K2 is sequentially connected in series the coil of spare solenoid valve HV2, second voltage type relay normally open contact KV22
Afterwards, the other end of the switch of second switch module K2 is connected with the common port of first voltage type relay two-way contact KV12,
The other end of second voltage type relay normally open contact KV22 is connected with the anode for the power supply DC1 that stops, with the power supply DC1 that stops
Or stand-by power supply DC2 forms Article 2 parking circuit, the Article 2 parking circuit is the spare Electromagnetic Valve Circuit that stops in emergency；
After one end series resistor R1 of second current relay normally opened contact KI22 with first voltage type relay two-way contact KV12
Common port be connected, the other end of the second current relay normally opened contact KI22 and one end phase of resistance R2 and connecing is followed by
Enter the control pole of controllable silicon SCR, access second after the anode series tertiary voltage type relay coil KV31 of controllable silicon SCR and open
Close on the switch of module K2 and the connecting line of spare solenoid valve HV2 coils, the other end of resistance R2 and the cathode of controllable silicon SCR
The anode of access parking power supply DC1 after connecting, Article 3 parking circuit, institute are formed with parking power supply DC1 or stand-by power supply DC2
Article 3 parking circuit is stated as solenoid valve overcurrent switching control circuit of stopping in emergency；First current relay normally-closed contact
The switch of one end access second switch module K2 of KI12 with the connecting line of spare solenoid valve HV2 coils, the first current mode after
The anode of access parking power supply DC1 after the other end concatenation second voltage type relay coil KV21 of electric appliance normally-closed contact KI12,
Article 4 parking circuit is formed with parking power supply DC1 or stand-by power supply DC2, the Article 4 parking circuit is the electricity that stops in emergency
Magnet valve undercurrent switching control circuit；First voltage type relay normally closed contact KV13 concatenate the 3rd malfunction indicator lamp MIL3 after with
Alarm power supply DC3 simultaneously connects, and parking power-fail alarm circuit is formed with alarm power supply DC3；Tertiary voltage type relay is two-way to be touched
The common port of point KV32 is connected with the cathode for the power supply DC3 that alarms, the normally open end of tertiary voltage type relay two-way contact KV32
It is connected after concatenating the second malfunction indicator lamp MIL2 with the anode for the power supply DC3 that alarms, forms and stop in emergency with alarm power supply DC3
Solenoid valve overcurrent alarm circuit；The normal-closed end concatenation second voltage type relay of tertiary voltage type relay two-way contact KV32
Anode after normally opened contact KV23, Fisrt fault indicator light MIL1 with the power supply DC3 that alarms is connected, and is formed with alarm power supply DC3
Stop in emergency solenoid valve undercurrent alarm circuit；The control terminal of first switch module K1 and the control terminal phase of second switch module K2
Output that is mutual and connecing afterwards with diesel engine main control module is connected.
Fisrt fault indicator light MIL1 described above is carried for the solenoid valve HV1 coil undercurrents that stop in emergency during stopping in emergency
Show, when Fisrt fault indicator light MIL1 is lighted, the coil undercurrent for the solenoid valve HV1 that illustrates to stop in emergency.
Coil overcurrents of the second malfunction indicator lamp MIL2 of the above for the solenoid valve HV1 that stops in emergency during stopping in emergency
Prompting, when the second malfunction indicator lamp MIL2 is lighted, the coil overcurrent for the solenoid valve HV1 that illustrates to stop in emergency.
The 3rd malfunction indicator lamp MIL3 of the above be used to stop power supply DC1 dead electricity when prompt, when parking power supply the 3rd therefore
When barrier indicator light MIL3 is lighted, illustrate power supply DC1 failures of stopping.
The rated voltage of first voltage type relay coil KV11 described above is more than the rated voltage of parking power supply DC1.
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 stopping power supply DC1's
Rated 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 specified less than its
The contact of the first current relay is in static state during electric current, i.e. normally opened contact disconnects, 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 specified less than or equal to its
The contact of the second current relay is in static state during electric current, i.e. normally opened contact disconnects, and normally-closed contact is connected.
The rated current of the first current relay coil KI11 of the above is set equal to the solenoid 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 electromagnetism that stops in emergency
The maximum allowed current of valve HV1 coils.
The above-described extinction current for stopping in emergency solenoid 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 solenoid 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, the switch connection of second switch module K2, the switch connection of the 3rd switch module K3；Diesel oil owner is not being received
During during the emergency shut-down control device signal that control module is sent, the switch accordingly controlled is off, i.e. first switch module
The switch of K1 is off, the switch of second switch module K2 is off, at the switch of the 3rd switch module K3
In off-state.
In order to realize above-mentioned purpose, another technical solution 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 electric appliance：
(1) the common port of first voltage type relay two-way contact KV12 and normally open end are connected, and parking power supply DC1 is to parking
Loop power supply；
(2) first voltage type relay normally closed contact KV13 is disconnected, 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) 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 for the solenoid valve HV1 and spare solenoid 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：
(1) the solenoid valve HV1 and spare solenoid valve HV2 that stops in emergency is in loss of excitation；
(2) Fisrt fault indicator light 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
The normally open end of three voltage-type relay two-way contact KV32 is disconnected with common port, and the second malfunction indicator lamp MIL2 extinguishes；
2) during control diesel engine stops in emergency, the switch connection of first switch module K1, second switch module are assert
The switch connection of K2：
(1) when the coil for the solenoid 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 solenoid valve HV1 coils that stop in emergency is between maximum allowed current, the first current mode after
The contact action of electric appliance, the contact of the second current relay are in static state：
1. the first current relay normally-closed contact KI12 is disconnected, second voltage type relay coil KV21 must not be electric, the
The contact of two voltage-type relays be in static state, i.e. second voltage type relay normally open contact KV22 disconnection, second voltage type after
Electric appliance normally opened contact KV23 is disconnected：
Second voltage type relay normally open contact KV22 is disconnected, and the spare Electromagnetic Valve Circuit that stops in emergency must not be electric, standby electricity
Magnet valve HV2 is in loss of excitation,
Second voltage type relay normally open contact KV23 is disconnected, and Fisrt fault indicator light MIL1 extinguishes；
2. the second current relay normally opened contact KI22 is disconnected, the control pole of no triggering Continuity signal to controllable silicon SCR,
Tertiary voltage type relay coil KV31 must not be electric, and the contact of tertiary voltage type relay is in static state, is serially connected in and stops in emergency
Tertiary voltage type relay normally closed contact KV33 in Electromagnetic Valve Circuit is connected, and control alarm power supply DC3 is indicated to Fisrt fault
The common port of the tertiary voltage type relay two-way contact KV32 of lamp MIL1 and the second malfunction indicator lamp MIL2 power supplies and normally open end
Disconnect, the second malfunction indicator lamp MIL2 extinguishes；
(2) when the coil undercurrent for the solenoid 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 second voltage type relay is normal
Open contact KV23 connections：Second voltage type relay normally open contact KV22 is connected, and the spare Electromagnetic Valve Circuit that stops in emergency is powered,
Spare solenoid valve HV2 obtains magnetic；
2. the second current relay normally opened contact KI22 is disconnected, the control pole of no triggering Continuity signal to controllable silicon SCR,
Tertiary voltage type relay coil KV31 must not be electric, and the contact of tertiary voltage type relay is in static state, is serially connected in and stops in emergency
Tertiary voltage type relay normally closed contact KV33 in Electromagnetic Valve Circuit is connected, and control alarm power supply DC3 is indicated to Fisrt fault
The common port of the tertiary voltage type relay two-way contact KV32 of lamp MIL1 and the second malfunction indicator lamp MIL2 power supplies and normally open end
Disconnect, and connected with normal-closed end：
A. the common port of tertiary voltage type relay two-way contact KV32 is disconnected with normally open end, the second malfunction indicator lamp MIL2
Extinguish；
B. the common port of tertiary voltage type relay two-way contact KV32 is connected with normal-closed end, treats second voltage type relay
Normally opened contact KV23 is connected, and Fisrt fault indicator light MIL1 is lighted, the coil undercurrent for prompting user to stop in emergency solenoid valve HV1；
(3) when the coil overcurrent for the solenoid 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 is connected, there is control pole of the triggering and conducting signal to controllable silicon SCR,
Tertiary voltage type relay coil KV31 obtains electric, the contact action of tertiary 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 is disconnected, and cut-out is tight
Emergency stop car Electromagnetic Valve Circuit is powered, and to stopping in emergency, Electromagnetic Valve Circuit carries out short-circuit protection；
B. the 3rd electricity that control alarm power supply DC3 powers to Fisrt fault indicator light MIL1 and the second malfunction indicator lamp MIL2
The common port of die mould relay two-way contact KV32 is connected with normally open end, and is disconnected with normal-closed end：
The common port of tertiary voltage type relay two-way contact KV32 is connected with normally open end, the second malfunction indicator lamp MIL2 points
It is bright, prompt user to stop in emergency solenoid valve HV1 coil overcurrents；
The common port of tertiary voltage type relay two-way contact KV32 is disconnected with normal-closed end, and Fisrt fault indicator light MIL1 is put out
Go out；
C. it is to be returned to stop in emergency or wait to remove to controllable silicon SCR to non-controlling diesel engine after controllable silicon SCR triggering and conducting
Discharge self-locking during anode institute power supply source, controllable silicon SCR cut-off, the contact of tertiary voltage type relay is static state by Dynamic- Recovery；
2. the first current relay normally-closed contact KI12 is disconnected, 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 is disconnected, stopped in emergency spare
Electromagnetic Valve Circuit no power, spare solenoid 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 is disconnected, 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 spare Electromagnetic Valve Circuit that stops in emergency is powered, and spare solenoid valve HV2 obtains magnetic.
Above-described diesel engine stops in emergency the implementation method of Electromagnetic Valve Circuit failover, warning circuit, further includes
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) the common port of first voltage type relay two-way contact KV12 and normally open end are connected, recover parking power supply DC1 to
Stop loop power supply；
(2) first voltage type relay normally closed contact KV13 is opened, and the 3rd malfunction indicator lamp MIL3 lighted extinguishes.
Above-described diesel engine stops in emergency the implementation method of Electromagnetic Valve Circuit failover, warning circuit, further includes
Following steps:
During control diesel engine stops in emergency, the coil overcurrent for the solenoid 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 is disconnected, the first electric current
The contact of type 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 KV23 is connected, no
Influence the Fisrt fault indicator light MIL1 in OFF state.
Stopped in emergency the implementation method of Electromagnetic Valve Circuit failover, warning circuit, further included with the diesel engine described in mouth
Following steps:
During control diesel engine stops in emergency, when the coil overcurrent for the solenoid valve HV1 that stops in emergency, controllable silicon SCR is triggered
After triggering and conducting, the tertiary voltage type relay normally closed contact KV33 being serially connected in the Electromagnetic Valve Circuit that stops in emergency is disconnected, and second
The contact of current relay reverts to static state, i.e. the second current relay normally opened contact KI22 is disconnected, and is not influenced in logical
Electricity condition tertiary voltage type relay.
Above-described diesel engine stops in emergency the implementation method of Electromagnetic Valve Circuit failover, warning circuit, is institute
It is to be returned to stop in emergency or wait to non-controlling diesel engine to remove to controllable silicon SCR sun after stating triggering controllable silicon SCR triggering and conducting
Self-locking is discharged during pole institute power supply source, refers to be returned switch off or wait to remove parking power supply DC1 to second switch module K2
During with stand-by power supply DC2, controllable silicon SCR cut-off, 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；Wait to stop
Power up is normal, automatically returns to parking power supply power supply.
(2) during diesel engine stops in emergency, if the coil undercurrent for the solenoid valve HV1 that stops in emergency, passes through spare electromagnetism immediately
Valve HV2 stops in emergency, and lights Fisrt fault indicator light MIL1, prompts the coil that user stops in emergency solenoid valve HV1 to owe
Stream.
(3) during diesel engine stops in emergency, if the coil overcurrent for the solenoid valve HV1 that stops in emergency, cut-out immediately is stopped in emergency
Electromagnetic Valve Circuit, the Electromagnetic Valve Circuit that stops in emergency to cut-out carry out short-circuit protection, light the second malfunction indicator lamp MIL2, prompt
User is stopped in emergency the coil overcurrent of solenoid valve HV1, and by means of the solenoid valve HV1 that stops in emergency coil undercurrent when be switched to
Spare solenoid valve HV2 carries out method of stopping in emergency, and is stopped in emergency by spare solenoid valve HV2.
(4) with the silicon-controlled number of contacts for reducing tertiary voltage type relay as self-locking element.
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, KV23. second voltage type relay
Normally opened contact, KV31. tertiary voltage type relay coils, KV32. tertiary voltage type relay two-way contacts, the electricity of KV33. the 3rd
Die mould relay normally closed contact, KI11. the first current relay coils, KI12. the first current relay normally-closed contacts,
KI21. the second current relay coil, KI22. the second current relay normally opened contacts, DC1. parking power supplys, DC2. are standby
With power supply, DC3. alarm power supplys, HV1. stops in emergency solenoid valve, the spare solenoid valves of HV2., MIL1. Fisrt fault indicator lights,
MIL2. the second malfunction indicator lamp, the 3rd malfunction indicator lamp of MIL3., K1. first switch modules, K2. second switch modules, SCR.
It is silicon-controlled, R1, R2. resistance.
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,
First current relay, the second current relay, the solenoid valve HV1 that stops in emergency, spare solenoid valve HV2, Fisrt fault refer to
Show 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, controllable silicon SCR, resistance R1, resistance R2；The first voltage type relay coil KV11 directly with
Parking power supply DC1 simultaneously connects, and the cathode of parking power supply DC1 is connected with the normally open end of first voltage type relay two-way contact KV12
Connect, the cathode 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
Anode with stop power supply DC1 anode be connected；The switch of first switch module K1 is sequentially connected in series the first current relay
Coil KI11, the second current relay coil KI21, tertiary voltage type relay normally closed contact KV33, stop in emergency electromagnetism
After the coil of valve HV1, the other end of the switch of first switch module K1 and the public affairs of first voltage type relay two-way contact KV12
End is connected altogether, and the other end of the coil for the solenoid valve HV1 that stops in emergency is connected with the anode for the power supply DC1 that stops, with parking electricity
Source DC1 or stand-by power supply DC2 forms first parking circuit, and first parking circuit is the Electromagnetic Valve Circuit that stops in emergency；
The switch of second switch module K2 is sequentially connected in series the coil of spare solenoid valve HV2, second voltage type relay normally open contact KV22
Afterwards, the other end of the switch of second switch module K2 is connected with the common port of first voltage type relay two-way contact KV12,
The other end of second voltage type relay normally open contact KV22 is connected with the anode for the power supply DC1 that stops, with the power supply DC1 that stops
Or stand-by power supply DC2 forms Article 2 parking circuit, the Article 2 parking circuit is the spare Electromagnetic Valve Circuit that stops in emergency；
After one end series resistor R1 of second current relay normally opened contact KI22 with first voltage type relay two-way contact KV12
Common port be connected, the other end of the second current relay normally opened contact KI22 and one end phase of resistance R2 and connecing is followed by
Enter the control pole of controllable silicon SCR, access second after the anode series tertiary voltage type relay coil KV31 of controllable silicon SCR and open
Close on the switch of module K2 and the connecting line of spare solenoid valve HV2 coils, the other end of resistance R2 and the cathode of controllable silicon SCR
The anode of access parking power supply DC1 after connecting, Article 3 parking circuit, institute are formed with parking power supply DC1 or stand-by power supply DC2
Article 3 parking circuit is stated as solenoid valve overcurrent switching control circuit of stopping in emergency；First current relay normally-closed contact
The switch of one end access second switch module K2 of KI12 with the connecting line of spare solenoid valve HV2 coils, the first current mode after
The anode of access parking power supply DC1 after the other end concatenation second voltage type relay coil KV21 of electric appliance normally-closed contact KI12,
Article 4 parking circuit is formed with parking power supply DC1 or stand-by power supply DC2, the Article 4 parking circuit is the electricity that stops in emergency
Magnet valve undercurrent switching control circuit；First voltage type relay normally closed contact KV13 concatenate the 3rd malfunction indicator lamp MIL3 after with
Alarm power supply DC3 simultaneously connects, and parking power-fail alarm circuit is formed with alarm power supply DC3；Tertiary voltage type relay is two-way to be touched
The common port of point KV32 is connected with the cathode for the power supply DC3 that alarms, the normally open end of tertiary voltage type relay two-way contact KV32
It is connected after concatenating the second malfunction indicator lamp MIL2 with the anode for the power supply DC3 that alarms, forms and stop in emergency with alarm power supply DC3
Solenoid valve overcurrent alarm circuit；The normal-closed end concatenation second voltage type relay of tertiary voltage type relay two-way contact KV32
Anode after normally opened contact KV23, Fisrt fault indicator light MIL1 with the power supply DC3 that alarms is connected, and is formed with alarm power supply DC3
Stop in emergency solenoid valve undercurrent alarm circuit；The control terminal of first switch module K1 and the control terminal phase of second switch module K2
Output that is mutual and connecing afterwards with diesel engine main control module is connected.
Controllable silicon SCR described above be used for stop in emergency Electromagnetic Valve Circuit overcurrent when stop in emergency solenoid valve overcurrent switching control
Energization self-locking in circuit processed.When the second current relay normally opened contact KI22 is connected, power supply is by resistance R1, R2 to silicon-controlled
SCR control pole provides triggering and conducting signal；When the second current relay normally opened contact KI22 is disconnected, power supply cannot pass through electricity
Hinder R1, R2 and provide triggering and conducting signal to controllable silicon SCR control pole, you can control silicon SCR control pole is without triggering Continuity signal；This
It is single-phase silicon-controlled that controllable silicon SCR is selected in invention.When the switch of second switch module K2, controllable silicon SCR is ended.
The above stops in emergency solenoid valve overcurrent switching control circuit for the solenoid valve that stops in emergency during stopping in emergency
The coil over-current detection switching control of HV1.
The above stops in emergency solenoid valve undercurrent switching control circuit for the solenoid valve that stops in emergency during stopping in emergency
The coil undercurrent detection switching control of HV1.
Coil undercurrents of the Fisrt fault indicator light MIL1 described above for the solenoid valve HV1 that stops in emergency during stopping in emergency
Prompting, when Fisrt fault indicator light MIL1 is lighted, the Electromagnetic Valve Circuit that illustrates to stop in emergency is likely to contact poor electrical resistance and becomes larger
The solenoid valve HV1 that stops in emergency coil open circuit or the circuit 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 overcurrents of the second malfunction indicator lamp MIL2 of the above for the solenoid valve HV1 that stops in emergency during stopping in emergency
Prompting, when the second malfunction indicator lamp MIL2 is lighted, stops in emergency solenoid valve HV1's in the Electromagnetic Valve Circuit that illustrates to stop in emergency
Coil short, is also possible to higher including institute's power supply source voltage certainly.
The 3rd malfunction indicator lamp MIL3 of the above, which is used to stop when power supply DC1 fails, to be prompted, when the 3rd event of parking power supply
When barrier indicator light 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
Parking power supply DC1 failures (or halting car power supply DC1 dead electricity or decompression) are regarded as when zero.
The rated voltage of first voltage type relay coil KV11 described above is more than the rated voltage of parking power supply DC1,
Be conducive 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 selects first voltage type relay coil KV11
Rated voltage be equal to parking power supply DC1 rated voltage 106%.
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 stopping power supply DC1's
Rated 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 specified less than its
The contact of the first current relay is in static state during electric current, i.e. normally opened contact disconnects, 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 specified less than or equal to its
The contact of the second current relay is in static state during electric current, i.e. normally opened contact disconnects, and normally-closed contact is connected.
The rated current of the first current relay coil KI11 of the above is set equal to the solenoid 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 electromagnetism that stops in emergency
The maximum allowed current of valve HV1 coils.
The above-described extinction current for stopping in emergency solenoid 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 solenoid valve HV1 coils is to refer to guarantee to burn out promptly
The maximum operating currenbt of electromagnetic valve for braking HV1 coils.
When stopping in emergency when the electric current that solenoid 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 solenoid 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 for the power supply DC1 that stops during the contact actuation (action) that can guarantee that first voltage type relay is
Normal output.
When first switch module K1 described above and second switch module K2 is serviceable condition：Receiving diesel engine master control
During during (machine) control signal that what module was sent stop in emergency, the switch connection that accordingly controls, i.e. first switch module K1's opens
Close and connect, the switch connection of second switch module K2；(machine) control of stopping in emergency that diesel engine main control module sends is not being received
During during signal processed, the switch accordingly controlled is off, i.e. the switch of first switch module K1 is off,
The switch of second switch module K2 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 the present invention diesel engine stop in emergency Electromagnetic Valve Circuit failover, warning circuit receiving diesel engine main control module hair
Go out stop in emergency (machine) control signal when during, diesel engine stops in emergency Electromagnetic Valve Circuit failover, warning circuit at this time
Control diesel engine is operated in stop in emergency period.
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 master control mould
During during (machine) control signal that what block was sent stop in emergency, diesel engine stops in emergency Electromagnetic Valve Circuit failover, alarm at this time
Circuit is operated in non-controlling diesel engine and stops in emergency period.
Assert that the first switch module K1 and second switch module K2 is serviceable condition in the present invention.
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：
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 electric appliance：
(1) the common port of first voltage type relay two-way contact KV12 and normally open end are connected, and parking power supply DC1 is to parking
Loop power supply；
(2) first voltage type relay normally closed contact KV13 is disconnected, 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) 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；
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：
(1) the common port of first voltage type relay two-way contact KV12 and normally open end are connected, recover parking power supply DC1 to
Stop loop power supply；
(2) first voltage type relay normally closed contact KV13 is disconnected, and the 3rd malfunction indicator lamp MIL3 lighted extinguishes.
Above-described diesel engine stop in emergency Electromagnetic Valve Circuit failover, warning circuit control diesel engine promptly stop
During car, assert that the switch of first switch module K1 and the switch of second switch module K2 are turned on, control the electromagnetism that stops in emergency
Valve HV1 and spare solenoid valve HV2 has following process：
1) when the coil for the solenoid 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 solenoid valve HV1 coils that stop in emergency is between maximum allowed current, the first current mode after
The contact action of electric appliance, the contact of the second current relay are in static state：
(1) the first current relay normally-closed contact KI12 is disconnected, and second voltage type relay coil KV21 must not be electric, the
The contact of two voltage-type relays be in static state, i.e. second voltage type relay normally open contact KV22 disconnection, second voltage type after
Electric appliance normally opened contact KV23 is disconnected：
Second voltage type relay normally open contact KV22 is disconnected, and the spare Electromagnetic Valve Circuit that stops in emergency must not be electric, standby electricity
Magnet valve HV2 is in loss of excitation,
Second voltage type relay normally open contact KV23 is disconnected, and Fisrt fault indicator light MIL1 extinguishes；
(2) the second current relay normally opened contact KI22 is disconnected, the control pole of no triggering Continuity signal to controllable silicon SCR,
Controllable silicon SCR keeps cut-off, and tertiary voltage type relay coil KV31 must not be electric, and the contact of tertiary voltage type relay is in
Static state, the tertiary voltage type relay normally closed contact KV33 being serially connected in the Electromagnetic Valve Circuit that stops in emergency are connected, control alarm electricity
The tertiary voltage type relay two-way contact that source DC3 powers to Fisrt fault indicator light MIL1 and the second malfunction indicator lamp MIL2
The common port of KV32 is disconnected with normally open end, and the second malfunction indicator lamp MIL2 extinguishes；
2) when the coil undercurrent for the solenoid 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 second voltage type relay is normal
Open contact KV23 connections：Second voltage type relay normally open contact KV22 is connected, and the spare Electromagnetic Valve Circuit that stops in emergency is powered,
Spare solenoid valve HV2 obtains magnetic；
(2) the second current relay normally opened contact KI22 is disconnected, the control pole of no triggering Continuity signal to controllable silicon SCR,
Tertiary voltage type relay coil KV31 must not be electric, and the contact of tertiary voltage type relay is in static state, is serially connected in and stops in emergency
Tertiary voltage type relay normally closed contact KV33 in Electromagnetic Valve Circuit is connected, and control alarm power supply DC3 is indicated to Fisrt fault
The common port of the tertiary voltage type relay two-way contact KV32 of lamp MIL1 and the second malfunction indicator lamp MIL2 power supplies and normally open end
Disconnect, and connected with normal-closed end：
1. the common port of tertiary voltage type relay two-way contact KV32 is disconnected with normally open end, the second malfunction indicator lamp MIL2
Extinguish；
2. the common port of tertiary voltage type relay two-way contact KV32 is connected with normal-closed end, second voltage type relay is treated
Normally opened contact KV23 is connected, and Fisrt fault indicator light MIL1 is lighted, the coil undercurrent for prompting user to stop in emergency solenoid valve HV1；
3) when the coil overcurrent for the solenoid 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 is connected, and has control pole of the triggering and conducting signal to controllable silicon SCR,
Tertiary voltage type relay coil KV31 obtains electric, the contact action of tertiary 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 is disconnected, cut-out is tight
Emergency stop car Electromagnetic Valve Circuit is powered, and to stopping in emergency, Electromagnetic Valve Circuit carries out short-circuit protection；
2. the 3rd electricity that control alarm power supply DC3 powers to Fisrt fault indicator light MIL1 and the second malfunction indicator lamp MIL2
The common port of die mould relay two-way contact KV32 is connected with normally open end, and is disconnected with normal-closed end：
A. the common port of tertiary voltage type relay two-way contact KV32 is connected with normally open end, the second malfunction indicator lamp MIL2
Light, the coil overcurrent for prompting user to stop in emergency solenoid valve HV1；
B. the common port of tertiary voltage type relay two-way contact KV32 is disconnected with normal-closed end, Fisrt fault indicator light MIL1
Extinguish；
It is 3. to be returned to stop in emergency or wait to remove to controllable silicon SCR to non-controlling diesel engine after controllable silicon SCR triggering and conducting
Discharge self-locking during anode institute power supply source, controllable silicon SCR cut-off, the contact of tertiary voltage type relay is static state by Dynamic- Recovery；
(2) the first current relay normally-closed contact KI12 is disconnected, 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 is disconnected, stopped in emergency spare
Electromagnetic Valve Circuit no power, spare solenoid 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 is disconnected, 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 spare Electromagnetic Valve Circuit that stops in emergency is powered, and spare solenoid valve HV2 obtains magnetic.
Above-described diesel engine stop in emergency Electromagnetic Valve Circuit failover, warning circuit control diesel engine promptly stop
During car, assert that the switch of first switch module K1 and the switch of second switch module K2 are turned on, stop in emergency solenoid valve
HV1 break down be switched to spare solenoid valve HV2 processes further include it is as follows:
1) control diesel engine stop in emergency during, the coil overcurrent for the solenoid 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 is disconnected, the first electricity
The contact of flow pattern relay reverts to static state, i.e. the first current relay normally-closed contact KI12 is connected, second voltage type relay
Device coil KV21 obtains electric, and the contact of second voltage type relay action, second voltage type relay normally open contact KV23 is connected,
Do not influence the Fisrt fault indicator light MIL1 in OFF state；
2) during control diesel engine stops in emergency, when the coil overcurrent for the solenoid valve HV1 that stops in emergency, triggering are silicon-controlled
After SCR triggering and conductings, the tertiary voltage type relay normally closed contact KV33 being serially connected in the Electromagnetic Valve Circuit that stops in emergency is disconnected,
The contact of second current relay reverts to static state, i.e. the second current relay normally opened contact KI22 is disconnected, do not influenced to locate
In the tertiary voltage type relay of "on" position.
It is to be returned to stop in emergency or wait to remove to non-controlling diesel engine after above-described triggering controllable silicon SCR triggering and conducting
Self-locking is discharged during whereabouts controllable silicon SCR anode institute's power supply source, refers to switching off or treating to second switch module K2 to be returned
When removing parking power supply DC1 and stand-by power supply DC2, controllable silicon SCR cut-off, the contact of tertiary voltage type relay is by dynamically extensive
Multiple is static state.
Stop in emergency Electromagnetic Valve Circuit failover, warning circuit of above-described diesel engine is urgent in non-controlling diesel engine
During parking, assert that the switch of first switch module K1 and the switch of second switch module K2 disconnect, control the electricity that stops in emergency
Magnet valve HV1 and spare solenoid valve HV2 has following process：
1) the solenoid valve HV1 and spare solenoid valve HV2 that stops in emergency is in loss of excitation；
2) Fisrt fault indicator light MIL1 extinguishes；
3) controllable silicon SCR is ended, and tertiary voltage type relay coil KV31 must not be electric, the contact of tertiary voltage type relay
In static state, i.e. the normally open end of tertiary voltage type relay two-way contact KV32 is disconnected with common port, the second malfunction indicator lamp
MIL2 extinguishes.
Claims (10)
- 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 solenoid valve that stops in emergency (HV1), spare solenoid 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), silicon-controlled (SCR), resistance (R1), resistance (R2)；It is characterized in that, first electricity Die mould relay coil (KV11) directly (DC1) and connects with parking power supply, the cathode of parking power supply (DC1) and first voltage type after The normally open end of electric appliance two-way contact (KV12) is connected, and the cathode and first voltage type relay of stand-by power supply (DC2) are two-way tactile The normal-closed end of point (KV12) is connected, and the anode of stand-by power supply (DC2) is connected with the anode of parking power supply (DC1)；First opens The switch for closing module (K1) is sequentially connected in series the first current relay coil (KI11), the second current relay coil (KI21), tertiary voltage type relay normally closed contact (KV33), the solenoid valve that stops in emergency (HV1) coil after, first switch mould The other end of the switch of block (K1) is connected with the common port of first voltage type relay two-way contact (KV12), and stop in emergency electricity The other end of the coil of magnet valve (HV1) is connected with the anode of parking power supply (DC1), with parking power supply (DC1) or stand-by power supply (DC2) first parking circuit is formed, first parking circuit is the Electromagnetic Valve Circuit that stops in emergency；Second switch module (K2) after switch is sequentially connected in series the coil of spare solenoid valve (HV2), second voltage type relay normally open contact (KV22), second The other end of the switch of switch module (K2) is connected with the common port of first voltage type relay two-way contact (KV12), and second The other end of voltage-type relay normally open contact (KV22) is connected with the anode of parking power supply (DC1), with parking power supply (DC1) Or stand-by power supply (DC2) forms Article 2 parking circuit, the Article 2 parking circuit is the spare Electromagnetic Valve Circuit that stops in emergency； After one end series resistor R1 of second current relay normally opened contact (KI22) with first voltage type relay two-way contact (KV12) common port is connected, and one end of the other end of the second current relay normally opened contact (KI22) and resistance R2 is mutually simultaneously The control pole of silicon-controlled (SCR) is accessed after connecing, after the anode series tertiary voltage type relay coil (KV31) of silicon-controlled (SCR) Access on the connecting line of switch and spare solenoid valve (HV2) coil of second switch module (K2), the other end of resistance R2 with can The anode of access parking power supply (DC1) after the cathode of control silicon (SCR) connects, with power supply (DC1) or stand-by power supply (DC2) structure that stops Into Article 3 parking circuit, the Article 3 parking circuit is solenoid valve overcurrent switching control circuit of stopping in emergency；First electric current The switch of one end access second switch module (K2) of type relay normally closed contact (KI12) and spare solenoid valve (HV2) coil On connecting line, the other end concatenation second voltage type relay coil (KV21) of the first current relay normally-closed contact (KI12) The anode of access parking power supply (DC1) afterwards, Article 4 parking circuit, institute are formed with parking power supply (DC1) or stand-by power supply (DC2) Article 4 parking circuit is stated as solenoid valve undercurrent switching control circuit of stopping in emergency；First voltage type relay normally closed contact (KV13) concatenate the 3rd malfunction indicator lamp (MIL3) (DC3) and to connect with alarm power supply afterwards, parking electricity is formed with alarm power supply (DC3) Source Failure Alarm circuit；The cathode phase of the common port of tertiary voltage type relay two-way contact (KV32) and alarm power supply (DC3) Connection, normally open end the second malfunction indicator lamp of concatenation (MIL2) of tertiary voltage type relay two-way contact (KV32) are electric with alarm afterwards The anode in source (DC3) is connected, and the solenoid valve overcurrent alarm circuit that stops in emergency is formed with alarm power supply (DC3)；Tertiary voltage type Normal-closed end concatenation second voltage type relay normally open contact (KV23), the Fisrt fault indicator light of relay two-way contact (KV32) (MIL1) anode afterwards with alarm power supply (DC3) is connected, and solenoid valve undercurrent alarm of stopping in emergency is formed with alarm power supply (DC3) Circuit；The control terminal of first switch module (K1) and the rear and diesel engine master control connected with each other of the control terminal of second switch module (K2) The output of module is connected.
- 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 solenoid valve (HV1) coil most Small maintenance electric current；The rated current of the second current relay coil (KI21) is equal to solenoid 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, the 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) Constant 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 described solenoid valve that stops in emergency (HV1) coil is to refer to guarantee to stop in emergency solenoid 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 described solenoid 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 solenoid 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 procedure1) 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 electric appliance：(1) the common port of first voltage type relay two-way contact (KV12) and normally open end are connected, 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 solenoid valve (HV1) and spare solenoid valve (HV2) is controlled1) during non-controlling diesel engine stops in emergency, switching off for first switch module (K1), second switch module are assert (K2) switch off：(1) stop in emergency solenoid valve (HV1) and spare solenoid valve (HV2) is in loss of excitation；(2) Fisrt fault indicator light (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 open end of voltage-type relay two-way contact (KV32) is disconnected 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：(1) when the coil of the solenoid 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 solenoid valve that stops in emergency (HV1) coil is between maximum allowed current, the first current mode after The contact action of electric appliance, 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, second voltage type Relay normally open contact (KV23) disconnects：Second voltage type relay normally open contact (KV22) disconnects, and the spare Electromagnetic Valve Circuit that stops in emergency must not be electric, spare electromagnetism Valve (HV2) is in loss of excitation,Second voltage type relay normally open contact (KV23) disconnects, and Fisrt fault indicator light (MIL1) extinguishes；2. the second current relay normally opened contact (KI22) disconnects, the control pole of no triggering Continuity signal to silicon-controlled (SCR), Tertiary voltage type relay coil (KV31) must not be electric, and the contact of tertiary voltage type relay is in static state, is serially connected in and promptly stops Tertiary voltage type relay normally closed contact (KV33) in car Electromagnetic Valve Circuit is connected, and controls alarm power supply (DC3) to the first event Hinder the public affairs of indicator light (MIL1) and the tertiary voltage type relay two-way contact (KV32) of the second malfunction indicator lamp (MIL2) power supply End is disconnected with normally open end altogether, and the second malfunction indicator lamp (MIL2) is extinguished；(2) when the coil undercurrent of the solenoid 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, second voltage type relay Normally opened contact (KV23) is connected：Second voltage type relay normally open contact (KV22) is connected, and stop in emergency spare Electromagnetic Valve Circuit It is powered, spare solenoid valve (HV2) obtains magnetic；2. the second current relay normally opened contact (KI22) disconnects, the control pole of no triggering Continuity signal to silicon-controlled (SCR), Tertiary voltage type relay coil (KV31) must not be electric, and the contact of tertiary voltage type relay is in static state, is serially connected in and promptly stops Tertiary voltage type relay normally closed contact (KV33) in car Electromagnetic Valve Circuit is connected, and controls alarm power supply (DC3) to the first event Hinder the public affairs of indicator light (MIL1) and the tertiary voltage type relay two-way contact (KV32) of the second malfunction indicator lamp (MIL2) power supply End is disconnected with normally open end altogether, and is connected with normal-closed end：A. the common port of tertiary voltage type relay two-way contact (KV32) is disconnected with normally open end, the second malfunction indicator lamp (MIL2) Extinguish；B. the common port of tertiary voltage type relay two-way contact (KV32) is connected with normal-closed end, treats that second voltage type relay is normal Contact (KV23) connection is opened, Fisrt fault indicator light (MIL1) is lighted, and prompts the coil that user stops in emergency solenoid valve (HV1) to owe Stream；(3) when the coil overcurrent of the solenoid 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, there is control pole of the triggering and conducting signal to silicon-controlled (SCR), Tertiary voltage type relay coil (KV31) obtains electric, the contact action of tertiary 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 circuit is powered, and to stopping in emergency, Electromagnetic Valve Circuit carries out short-circuit protection；B. the 3rd that alarm power supply (DC3) is powered to Fisrt fault indicator light (MIL1) and the second malfunction indicator lamp (MIL2) is controlled The common port of voltage-type relay two-way contact (KV32) is connected with normally open end, and is disconnected with normal-closed end：The common port of tertiary voltage type relay two-way contact (KV32) is connected with normally open end, the second malfunction indicator lamp (MIL2) point Coil overcurrent that is bright, prompting user to stop in emergency solenoid valve (HV1)；The common port of tertiary voltage type relay two-way contact (KV32) is disconnected with normal-closed end, and Fisrt fault indicator light (MIL1) is put out Go out；C. it is to be returned to stop in emergency or wait to non-controlling diesel engine to remove to silicon-controlled (SCR) sun after controllable silicon SCR triggering and conducting Discharge self-locking during pole institute power supply source, silicon-controlled (SCR) cut-off, 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, spare solenoid 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 spare Electromagnetic Valve Circuit that stops in emergency is powered, and spare solenoid valve (HV2) obtains magnetic.
- The implementation method of Electromagnetic Valve Circuit failover, warning circuit 7. diesel engine according to claim 6 stops in emergency, It is characterized in that, further include 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 open end are connected, 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, It is characterized in that, further include following steps:During control diesel engine stops in emergency, the coil overcurrent of the solenoid 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 (KI12) is connected, second voltage type relay Coil (KV21) must be electric, and the contact action of second voltage type relay, second voltage type relay normally open contact (KV23) is connected, Do not influence the Fisrt fault indicator light (MIL1) in OFF state.
- The implementation method of Electromagnetic Valve Circuit failover, warning circuit 9. diesel engine according to claim 6 stops in emergency, It is characterized in that, further include following steps:During control diesel engine stops in emergency, when the coil overcurrent of the solenoid valve that stops in emergency (HV1), trigger silicon-controlled (SCR) After triggering and conducting, 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 two current relay reverts to static state, i.e. the second current relay normally opened contact (KI22) disconnects, do not influence to locate In "on" position tertiary voltage type relay.
- 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 silicon-controlled (SCR) triggering and conducting of triggering Self-locking is discharged when removing to silicon-controlled (SCR) anode institute power supply source, refers to that the switch to be returned to second switch module (K2) breaks Open or when parking power supply (DC1) and stand-by power supply (DC2) is removed, silicon-controlled (SCR) cut-off, tertiary voltage type relay touches Point is static state by Dynamic- Recovery.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649027A (en) * | 2019-07-02 | 2020-09-11 | 涌镇液压机械（上海）有限公司 | Device and method for detecting jamming of electromagnetic directional valve |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545479A (en) * | 2015-11-27 | 2016-05-04 | 江苏科技大学 | Failure alarm circuit for emergency stop solenoid valve loop of diesel engine and alarm method for failure alarm circuit |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105545479A (en) * | 2015-11-27 | 2016-05-04 | 江苏科技大学 | Failure alarm circuit for emergency stop solenoid valve loop of diesel engine and alarm method for failure alarm circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649027A (en) * | 2019-07-02 | 2020-09-11 | 涌镇液压机械（上海）有限公司 | Device and method for detecting jamming of electromagnetic directional valve |
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Application publication date: 20180413 |