CN207437257U - Diesel locomotive pre-heating system - Google Patents
Diesel locomotive pre-heating system Download PDFInfo
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- CN207437257U CN207437257U CN201721019129.2U CN201721019129U CN207437257U CN 207437257 U CN207437257 U CN 207437257U CN 201721019129 U CN201721019129 U CN 201721019129U CN 207437257 U CN207437257 U CN 207437257U
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Abstract
The utility model provides a kind of diesel locomotive pre-heating system, including：Alternating Current Power Supply module, Alternating Current Power Supply module include three-phase alternating-current supply and zero curve；High temperature water system heater circuit, including the first automatic switch, the first three-phase ac contactor, high temperature water system heating module, the first automatic switch is switched including four ways, and high temperature water system heating module includes multiple ptc heaters；Low temperature water system heater circuit, including the second automatic switch, the second three-phase ac contactor, low temperature water system heating module, the second automatic switch is switched including three ways, and low temperature water system heating module includes multiple ptc heaters；Control circuit, it is connected to the first three-phase ac contactor and the second three-phase ac contactor, control circuit exports control signal according to cooling water temperature in diesel locomotive to the first three-phase ac contactor and the second three-phase ac contactor, the first three-phase ac contactor and the second three-phase ac contactor to be controlled to be in closure state or off-state.
Description
Technical field
The utility model is related to technical field of diesel locomotive, in particular to a kind of diesel locomotive pre-heating system.
Background technology
Diesel locomotive to ensure cold districts can start at any time to put into operation, it is specified that diesel engine lubricating oil, cooling
Coolant-temperature gage must keep 20 DEG C or more, therefore pre-heating system is both provided on diesel locomotive.Diesel locomotive pre-heating system is to internal combustion
Machine oil, fuel oil and the pre-warmed device of cooling water of diesel engine of locomotive, wherein, lubricating oil, the cooling water system of diesel engine of locomotive
Temperature is less than certain temperature（Such as 20 DEG C）When, it is impossible to start diesel engine；Diesel engine of locomotive lubricating oil, cooling water system temperature are less than
Certain temperature（Such as 40 DEG C）When, diesel engine, which is unable to loading, makes locomotive operation, in correlation technique, using preboiler to locomotive oil
Water system is preheated, but there are volume is big, efficiency is low, seriously polluted, operation inconvenient maintenance for existing diesel locomotive preboiler
The defects of.
Utility model content
The utility model is based at least one above-mentioned technical problem, it is proposed that a kind of new diesel locomotive preheating system
System, is preheated with reference to ptc heater, while the pre- heat demand of diesel locomotive is met, is reduced oil consumption cost, is reduced air
Pollution has preferable Social benefit and economic benefit.
In view of this, the utility model proposes a kind of diesel locomotive pre-heating system, including：Alternating Current Power Supply module, it is described
Alternating Current Power Supply module includes three-phase alternating-current supply and zero curve；High temperature water system heater circuit, including the first automatic switch, described first
Three-phase ac contactor, high temperature water system heating module, first automatic switch are switched including four ways, and the high temperature water system adds
Thermal modules include multiple ptc heaters, wherein, the four ways switch of first automatic switch is separately positioned on described three and intersects
On the three-phase circuit in galvanic electricity source and the zero curve, the sub switch being arranged on the three-phase circuit is respectively connected to described first
The input terminal of three-phase ac contactor, the output terminal of first three-phase ac contactor are respectively connected to a high temperature water system
Heated mould ptc heater in the block；Low temperature water system heater circuit, including the second automatic switch, the second three-phase alternating current contact
Device, low temperature water system heating module, second automatic switch are switched including three ways, and the low temperature water system heating module includes more
A ptc heater, wherein, the three ways switch of second automatic switch is separately positioned on the three-phase of the three-phase alternating-current supply
On circuit, the three ways switch of second automatic switch is respectively connected to the input terminal of second three-phase ac contactor,
The output terminal of second three-phase ac contactor is respectively connected to the ptc heater in a low temperature water system heating module；
Control circuit is connected to first three-phase ac contactor and second three-phase ac contactor, the control circuit root
It is controlled according to cooling water temperature in diesel locomotive to first three-phase ac contactor and second three-phase ac contactor output
Signal processed, first three-phase ac contactor and second three-phase ac contactor to be controlled to be in closure state or disconnection
State.
In the technical scheme, PTC（Positive Temperature Coefficient ）Heater is sent out with constant temperature
Advantages, the high temperature water systems of entire diesel locomotive pre-heating system such as heat, thermal conversion rate height, strong antijamming capability, service life length add
It is heated in heater circuit and low temperature water system heater circuit using ptc heater, and by control circuit according in diesel locomotive
Cooling water temperature controls the first three-phase ac contactor and the second three-phase ac contactor to be closed or disconnect, and PTC is added with realizing
The control of hot device working condition while meeting the pre- heat demand of diesel locomotive, reduces oil consumption cost, reduces air pollution, tool
There is preferable Social benefit and economic benefit.Wherein, three-phase alternating-current supply is provided by auxiliary diesel generater set or external power.
In the above-mentioned technical solutions, it is preferable that the control circuit in the diesel locomotive cooling water temperature be less than etc.
When the first temperature, first three-phase ac contactor and second three-phase ac contactor is controlled to be in closure state,
The control circuit controls first three-phase alternating current when cooling water temperature is more than or equal to second temperature in the diesel locomotive
Contactor and second three-phase ac contactor are off；Wherein, first temperature is less than the second temperature.
In the technical scheme, the first three-phase ac contactor and the second three-phase ac contactor are controlled by control circuit
Closure or disconnection, realize automatically controlling for entire heating process, it is ensured that the pre- thermal efficiency of diesel locomotive pre-heating system,
One temperature and second temperature can be configured according to specific requirements, and the first temperature is preferably 25 DEG C, when need start diesel locomotive
During big oil production machine, second temperature is preferably 70 DEG C, need not start the big diesel engine of locomotive, only diesel locomotive oil-water system is carried out
When winter preheating is antifreeze, second temperature is preferably 40 DEG C.
In any of the above-described technical solution, it is preferable that further include：3rd automatic switch, the 3rd automatic switch
First end is connected to the anode of DC power supply；4th automatic switch, the first end of the 4th automatic switch are connected to institute
The second end of the 3rd automatic switch is stated, the second end of the 4th automatic switch is connected to the first end of the first D.C. contactor；
First D.C. contactor, the second end of first D.C. contactor are connected to pump motor；5th automatic switch, it is described
The first end of 5th automatic switch is connected to the second end of the 3rd automatic switch, and the second end of the 5th automatic switch connects
It is connected to the first end of the second D.C. contactor；Second D.C. contactor, the second end connection of second D.C. contactor
To the preheating machine Oil pump electrical machinery of the diesel locomotive；6th automatic switch, the first end of the 6th automatic switch are connected to institute
The second end of the 3rd automatic switch is stated, the second end of the 6th automatic switch is connected to the first end of the 3rd D.C. contactor；
3rd D.C. contactor, the second end of the 3rd D.C. contactor are connected to the fuel oil pump motor of the diesel locomotive.
In any of the above-described technical solution, it is preferable that the control circuit includes：7th automatic switch, the described 7th
The first end of automatic switch is connected to the anode of the direct current supply module；First temperature relay, the first temperature relay
The first end of device is connected to the second end of the 7th automatic switch, and the second end of first temperature relay is connected to second
The first end of temperature relay；The second temperature relay, the second end of the second temperature relay be connected to it is intermediate after
Electric appliance；The intermediate relay, one end of first group of moving together contact of the intermediate relay be connected to the second temperature after
The first end of electric appliance, the other end of first group of moving together contact of the intermediate relay are connected to the second temperature relay
Second end, one end of second group of moving together contact of the intermediate relay are connected to the second end of the 7th automatic switch, institute
The other end for stating second group of moving together contact of intermediate relay is respectively connected to the first end of first time relay, described first
Contact directly the 3rd end of device, high temperature preheating entering water electromagnetic valve, high temperature preheating return water solenoid valve, low-temperature prewarming entering water electromagnetic valve,
Low-temperature prewarming return water solenoid valve；The first time relay, the second end of the first time relay are connected to described
The second end of seven automatic switch, the 3rd end of the first time relay are respectively connected to first three-phase alternating current and connect
Tentaculum and second three-phase ac contactor, the 3rd end of second D.C. contactor, the first of second time relay
End；Second time relay, the second end of second time relay are connected to the second of the 7th automatic switch
End, the 3rd end of second time relay is connected to the anode of diode；The diode, the cathode of the diode connect
It is connected to the 3rd end of the 3rd D.C. contactor.
In any of the above-described technical solution, it is preferable that first temperature relay cools down in the diesel locomotive
When coolant-temperature gage is less than or equal to first temperature, in normally closed on-state, the second temperature actuating of relay is to connect
The coil power of intermediate relay is stated, first group of moving together contact of the intermediate relay is connected to keep the intermediate relay
Coil power, second group of moving together contact of the intermediate relay connect the high temperature preheating entering water electromagnetic valve, the high temperature
Preheating return water solenoid valve, the low-temperature prewarming entering water electromagnetic valve and the low-temperature prewarming return water solenoid valve, first direct current connect
Tentaculum and the first time relay energized action are to start the pump motor；The first time relay is being powered the
After one duration, be delayed just chain closure, and first three-phase ac contactor and second three-phase ac contactor are in
Closure state, the PCT heating being connected respectively with first three-phase ac contactor and second three-phase ac contactor
Device starts heating, second D.C. contactor and second time relay energized action to start the diesel locomotive
Preheating machine Oil pump electrical machinery；Second time relay is after second duration that is powered, and be delayed just chain closure, and the described 3rd is straight
Contactor energized action is flowed to start the fuel oil pump motor of the diesel locomotive；First temperature relay is in the internal combustion engine
It is acted when cooling water temperature is more than or equal to the second temperature in vehicle, it is described to cut off the coil power of the intermediate relay
Second group of moving together contact of intermediate relay disconnects, and first first three-phase ac contactor and the described 2nd 3 intersects
Stream contactor is off, and is connected respectively with first three-phase ac contactor and second three-phase ac contactor
The PCT heaters connect stop heating, the pump motor, the preheating machine Oil pump electrical machinery of the diesel locomotive and the diesel locomotive
Fuel oil pump motor it is out of service, the high temperature preheating entering water electromagnetic valve, the high temperature preheating return water solenoid valve, the low temperature are pre-
Hot entering water electromagnetic valve and the low-temperature prewarming return water solenoid valve are closed.Wherein, the first duration and the second duration are preferably 20 seconds.
In any of the above-described technical solution, it is preferable that first automatic switch be four line automatic switch, described second
Automatic switch is three line automatic switch.
It by above technical scheme, is preheated with reference to ptc heater, is meeting the same of the pre- heat demand of diesel locomotive
When, oil consumption cost is reduced, reduces air pollution, there is preferable Social benefit and economic benefit.
Description of the drawings
Fig. 1 shows the main circuit diagram of the diesel locomotive pre-heating system of embodiment according to the present utility model；
Fig. 2 shows the circuit of the control circuit in the diesel locomotive pre-heating system of embodiment according to the present utility model
Figure.
Specific embodiment
In order to be more clearly understood that the above-mentioned purpose of the utility model, feature and advantage, below in conjunction with the accompanying drawings and have
The utility model is further described in detail in body embodiment.It should be noted that in the case where there is no conflict, this Shen
The feature in embodiment and embodiment please can be mutually combined.
Many details are elaborated in the following description in order to fully understand the utility model, still, this practicality
New to be implemented using other different from other modes described here, therefore, the scope of protection of the utility model is simultaneously
From the limitation of following public specific embodiment.
The technical solution of the utility model is described further below in conjunction with Fig. 1 and Fig. 2：
As shown in Figure 1, diesel locomotive pre-heating system 100 includes：Alternating Current Power Supply module 102, the Alternating Current Power Supply module bag
Include three-phase alternating-current supply and zero curve；High temperature water system heater circuit 104, including the first automatic switch 106（Such as the QF1 in Fig. 1）, institute
State the first three-phase ac contactor 108（KM1 shown in FIG. 1）, high temperature water system heating module 110, first automatic switch 106
It is switched including four ways, the high temperature water system heating module 110 includes multiple ptc heaters 1102（PTC1, PTC2 in Fig. 1
And PTC3）, wherein, the four ways switch of first automatic switch 106 is separately positioned on the three-phase of the three-phase alternating-current supply
On circuit and the zero curve, the sub switch being arranged on the three-phase circuit is respectively connected to the first three-phase alternating current contact
The input terminal of device 108, the output terminal of first three-phase ac contactor 108 are respectively connected to a high temperature water system heated mould
Ptc heater 1102 in block 110；Low temperature water system heater circuit 112, including the second automatic switch 114（QF2 in Fig. 1）, institute
State the second three-phase ac contactor 116（KM2 in Fig. 1）, low temperature water system heating module 118, second automatic switch 114 wraps
Three ways switch is included, the low temperature water system heating module 118 includes multiple ptc heaters 1182（PTC4, PTC5 in Fig. 1 and
PTC6）, wherein, the three ways switch of second automatic switch 114 is separately positioned on the three-phase electricity of the three-phase alternating-current supply
On the road, the three ways switch of second automatic switch 114 is respectively connected to the input of second three-phase ac contactor 116
End, the output terminal of second three-phase ac contactor 116 are respectively connected in a low temperature water system heating module 118
Ptc heater 1182；Control circuit 120（As shown in Figure 2）, it is connected to first three-phase ac contactor 108 and described
Two three-phase ac contactors 116, the control circuit 120 is according to cooling water temperature in diesel locomotive to first three-phase alternating current
Contactor 108 and second three-phase ac contactor 116 output control signal, to control first three-phase ac contactor
108 and second three-phase ac contactor 116 be in closure state or off-state.
In the technical scheme, ptc heater has constant temperature warming, thermal conversion rate height, strong antijamming capability, service life
The advantages such as long use PTC in the high temperature water system heater circuit of entire diesel locomotive pre-heating system and low temperature water system heater circuit
Heater is heated, and controls the first three-phase ac contactor and the according to cooling water temperature in diesel locomotive by control circuit
Two three-phase ac contactors are closed or disconnect, and to realize the control to ptc heater working condition, meet the preheating of diesel locomotive
While demand, oil consumption cost is reduced, reduces air pollution, there is preferable Social benefit and economic benefit.Wherein, three is intersecting
Galvanic electricity source is provided by auxiliary diesel generater set or external power.
In the above-mentioned technical solutions, it is preferable that the control circuit 120 cooling water temperature in the diesel locomotive is less than
During equal to the first temperature, first three-phase ac contactor 108 and second three-phase ac contactor 116 is controlled to be in and close
Conjunction state, the control circuit 120 is when cooling water temperature is more than or equal to second temperature in the diesel locomotive, control described the
One three-phase ac contactor 108 and second three-phase ac contactor 116 are off；Wherein, first temperature
Less than the second temperature.
In the technical scheme, the first three-phase ac contactor and the second three-phase ac contactor are controlled by control circuit
Closure or disconnection, realize automatically controlling for entire heating process, it is ensured that the pre- thermal efficiency of diesel locomotive pre-heating system,
One temperature and second temperature can be configured according to specific requirements, and the first temperature is preferably 25 DEG C, when need start diesel locomotive
During big oil production machine, second temperature is preferably 70 DEG C, need not start the big diesel engine of locomotive, only diesel locomotive oil-water system is carried out
When winter preheating is antifreeze, second temperature is preferably 40 DEG C.
Specifically, Alternating Current Power Supply module 102 can be that " auxiliary diesel generater set " or " supply socket of powering outside locomotive " provides
3AC 220V/50HZ power supplys, the first via, by tetra- line automatic switch " QF1 " of DZ5-20/410 and CJ20-40 three-phase alternating currents
Contactor " KM1 " connects the three string formations connection ptc heater of high temperature water system heating module（Power is 3X4KW）；Another way is passed through
Tri- line automatic switch " QF2 " of DZ5-20/310 and CJ20-40 three-phase ac contactors " KM2 " connect low temperature water system heating module
Three string formations connection ptc heater（Power is 3X4KW）；" QF1 " and " QF2 " automatic switch also known as air-break are a kind of
It is more than the switch that rated current will disconnect automatically to want electric current in circuit.It integrates control and multi-protective function, except energy
It completes to connect with outside disjunction circuit, short circuit, heavy overload and the under-voltage that can still circuit or electrical equipment occur etc. be protected
Shield.In diesel locomotive cooling water temperature be less than or equal to 25 DEG C when, control circuit connect three-phase ac contactor " KM1 " and
The DC110V coil powers of " KM2 ", three groups of main contacts of contactor are respectively turned on the PTC of each 4KW of two sets of water system series connection simultaneously
Heater proceeds by the preheating of locomotive water system；When cooling water temperature is more than or equal to 70 DEG C in diesel locomotive, control circuit cut-out
The DC110V coil powers of three-phase ac contactor " KM1 " and " KM2 ", three groups of main contacts of contactor cut off two sets respectively simultaneously
The PTC Water pipe heating devices of each 4KW of water system series connection stop carrying out locomotive water system preheating.
As shown in Figure 2, it is preferable that diesel locomotive pre-heating system further includes：3rd automatic switch 122（QF3 in Fig. 2）,
The first end of 3rd automatic switch 122 is connected to the anode of DC power supply；4th automatic switch 124（In Fig. 2
QF4）, the first end of the 4th automatic switch 124 is connected to the second end of the 3rd automatic switch 122, the four selfs
The second end of dynamic switch 124 is connected to the first D.C. contactor 126（KM3 in Fig. 2）First end；The first direct current contact
Device 126, the second end of first D.C. contactor 126 are connected to pump motor 128（MD1 in Fig. 2）；5th automatic switch
130（QF5 in Fig. 2）, the first end of the 5th automatic switch 130 is connected to the second end of the 3rd automatic switch 122,
The second end of 5th automatic switch 130 is connected to the second D.C. contactor 132（KM4 in Fig. 2）First end；Described
Two D.C. contactors 132, the second end of second D.C. contactor 132 are connected to the preheating lubricating oil pump electricity of the diesel locomotive
Machine 134（MD2 in Fig. 2）；6th automatic switch 136（QF6 in Fig. 2）, the first end connection of the 6th automatic switch 136
To the second end of the 3rd automatic switch 122, the second end of the 6th automatic switch 136 is connected to the 3rd D.C. contactor
138（KM5 in Fig. 2）First end；3rd D.C. contactor 138, the second end of the 3rd D.C. contactor 138 connect
It is connected to the fuel oil pump motor 140 of the diesel locomotive（MD3 in Fig. 2）.
The partial circuit carries water Xun Huan, oil circulation and the fuel oil Xun Huan warm-up tasks of diesel locomotive pre-heating system,
DC power supply can be the DC110V that " auxiliary diesel generater set " or " supply socket of powering outside locomotive " provide, and electric current exists
Within 7--10A, pre-heating system water circulation motor group increases by 1 set of 20A and connects still using the original pump motor group MD1 of preheating furnace
Tentaculum KM3 and 1 set of 20A monopole automatic switch QF4, pre-heating system oil circulation motor group is still using the original lubricating oil pump electricity of preheating furnace
Unit MD2, and 1 set of 20A contactors KM4 of increase and 1 set of 20A monopole automatic switch QF5, fuel-firing preheating circulation motor group still use
The original fuel oil pump motor group MD3 of diesel locomotive）, and increase by 1 set of 20A contactors KM5 and 1 set of 20A monopole automatic switch QF6.
The control circuit 120 includes：7th automatic switch 142（QF7 in Fig. 2）, the 7th automatic switch 142
First end is connected to the anode of the direct current supply module；First temperature relay 144（KTE1 in Fig. 2）, first temperature
The first end of degree relay 144 is connected to the second end of the 7th automatic switch 142, first temperature relay 144
Second end is connected to second temperature relay 146（KTE2 in Fig. 2）First end；The second temperature relay 146, it is described
The second end of second temperature relay 146 is connected to intermediate relay 148；The intermediate relay 148（KA in Fig. 2）, institute
The one end for stating first group of moving together contact of intermediate relay 148 is connected to the first end of the second temperature relay 146, described
The other end of first group of moving together contact of intermediate relay 148 is connected to the second end of the second temperature relay 146, described
One end of second group of moving together contact of intermediate relay 148 is connected to the second end of the 7th automatic switch 142, the centre
The other end of second group of moving together contact of relay 148 is respectively connected to first time relay 150（KT1 in Fig. 2）
One end, described first contact directly the 3rd end of device 126, high temperature preheating entering water electromagnetic valve 152（MB1 in Fig. 2）, high temperature preheating
Return water solenoid valve 154（MB2 in Fig. 2）, low-temperature prewarming entering water electromagnetic valve 156（MB3 in Fig. 2）, low-temperature prewarming return water electromagnetism
Valve 158（MB4 in Fig. 2）；The first time relay 150, the second end of the first time relay 150 are connected to institute
The second end of the 7th automatic switch 142 is stated, the 3rd end of the first time relay 150 is respectively connected to described first
Three-phase ac contactor 108 and second three-phase ac contactor 116, the 3rd end of second D.C. contactor 132,
The first end of two time relays 160；Second time relay 160, the second end of second time relay 160 connect
The second end of the 7th automatic switch 142 is connected to, the 3rd end of second time relay 160 is connected to diode 162
Anode；The diode 162, the cathode of the diode 162 are connected to the 3rd end of the 3rd D.C. contactor 138.
In any of the above-described technical solution, it is preferable that first temperature relay 144 is cold in the diesel locomotive
But when coolant-temperature gage is less than or equal to first temperature, in normally closed on-state, the second temperature relay 146 acts to connect
Lead to the coil power of the intermediate relay 148, first group of moving together contact of the intermediate relay 148 is connected to keep described
The coil power of intermediate relay 148, second group of moving together contact of the intermediate relay 148 connect the high temperature preheating water inlet
Solenoid valve 152, the high temperature preheating return water solenoid valve 154, the low-temperature prewarming entering water electromagnetic valve 156 and the low-temperature prewarming return
Water solenoid valve 158, first D.C. contactor 126 and 150 energized action of first time relay are to start the water
Pump motor 128；The first time relay 150 is after first duration that is powered, and be delayed just chain closure, first three-phase
A.C. contactor 108 and second three-phase ac contactor 116 are in closure state, are connect respectively with first three-phase alternating current
The PCT heater startings heating that tentaculum 108 is connected with second three-phase ac contactor 116, the second direct current contact
Device 132 and second time relay, 160 energized action are to start the preheating machine Oil pump electrical machinery 134 of the diesel locomotive；Institute
Second time relay 160 is stated after second duration that is powered, be delayed just chain closure, the 3rd D.C. contactor 138
Electronic work is to start the fuel oil pump motor 140 of the diesel locomotive；First temperature relay 144 is in the diesel locomotive
Cooling water temperature acts when being more than or equal to the second temperature, to cut off the coil power of the intermediate relay 148, in described
Between relay 148 second group of moving together contact disconnect, first first three-phase ac contactor 108 and the described 2nd 3
Cross streams contactor 116 is off, respectively with first three-phase ac contactor 108 and second three-phase alternating current
The PCT heaters that contactor 116 is connected stop heating, the pump motor 128, the preheating lubricating oil pump electricity of the diesel locomotive
The fuel oil pump motor 140 of machine 134 and the diesel locomotive is out of service, the high temperature preheating entering water electromagnetic valve 152, the high temperature
Preheating return water solenoid valve 154, the low-temperature prewarming entering water electromagnetic valve 156 and the low-temperature prewarming return water solenoid valve 158 are closed.Its
In, the first duration and the second duration are preferably 20 seconds.
Specifically, when Cooling Water of Diesel Locomotive temperature≤25 °C（First temperature）When, the 4 of system automatic control pre-heating water route
A electromagnetic valve（MB1~ MB4）It is attracted, opens the water route of pre-heating system；Meanwhile warm-up cycle water pump contactor KM3（DC110V）
With time relay KTI（DC110V）Energized action simultaneously starts the warm-up cycle water pump direct current generator of DC110V/0.8KW
MD1 makes the water route of diesel locomotive pre-heating system unimpeded and starts the cycle over；After delay 20 seconds, the delay of time relay KT1 just connects
Locking closes, and automatically controls two groups of three-phase alternating current 20A electromagnetic contactors and is closed（Coil voltage DC110V）, two sets of 6 groups of AC220V/
The ptc heater heating of 4KW, the temperature of rapid heater overall height low-temperature circulating water；Meanwhile preheat lubricating oil pump contactor KM4
（DC110V）With time relay KT2（DC110V）Energized action simultaneously starts the preheating lubricating oil pump direct current of DC110V/0.6KW
Motor starts to preheat the lubricating oil system of diesel engine of locomotive；After 20 seconds, the delay of time relay KT2 is just chain
It is closed, automatically controls locomotive fuel pump motor contactor KM5 energized actions（DC110V）, make diesel locomotive DC110V/0.6KW's
Fuel pump operates, and by the oil preheater of locomotive, automatic preheating is carried out to locomotive fuel oil oil using warm water；It can be certainly to realize
Dynamic control, and prevent the interference of pre- heater circuit and original diesel locomotive circuit, in pre-heating system automatic control circuit and internal combustion engine
Increase by 1 set of 400V/2A diode in the original fuel pump contactor control circuit of vehicle；When Cooling Water of Diesel Locomotive temperature >=70 °C
Afterwards, locomotive temperature relay KTE1 is acted, and the power supply of cut-out intermediate relay KA, moving together contact disconnects, and cuts off two groups of three-phases
The power supply of alternating current 220V/20A electromagnetic contactor KM1, KM2 coils, the ptc heater heating of two sets of 6 groups of AC220V/4KW is because disconnected
Electricity is simultaneously stopped heating；Meanwhile locomotive preheats water-based 3 groups " water pump and Oil pump electrical machineries "（MD1、MD2、MD3）And 4 solenoid valves
（MB1~ MB4）, it is automatically closed, recovers locomotive running state；At this point, the big diesel engine operation of locomotive can be started（Diesel locomotive is transported
Row state needs to cool down motorcycle oil-water system without preheating）；The big diesel engine of locomotive need not started, only to locomotive
Oil-water system carry out winter preheating it is antifreeze when, pre-heating system can move in circles automatic progress according to above-mentioned steps.In locomotive operation
During the preceding progress winter preheating to oil-water system, preheating can be stopped behind diesel locomotive cooling water temperature >=40 °C, start diesel engine
Operation.
In any of the above-described technical solution, it is preferable that first automatic switch 106 is four line automatic switch, described
Second automatic switch 114 is three line automatic switch.
The model choosing of all parts in diesel locomotive pre-heating system and diesel locomotive pre-heating system in above-described embodiment
It selects and is preferably adapted for DF7G diesel locomotives.
In the above-described embodiments, assemble ptc heater pre-heating system using minitype diesel oil engine and substitute original internal combustion
The preboiler of locomotive, during transformation, the installation site and weight of the parts such as " diesel generating set " and the installation of original preboiler
Position and weight are essentially identical,, be as far as possible using interior during transformation to ensure that the total weight of diesel locomotive and axis meet regulation again
The original pipeline of combustion locomotive and accessory reduce retrofit work amount, improve the efficiency and automatic control level of diesel locomotive pre-heating system.
The technical solution of the utility model is described in detail above in association with attached drawing, the technical solution of the utility model proposes
A kind of new diesel locomotive pre-heating system, is preheated with reference to ptc heater, is meeting the same of the pre- heat demand of diesel locomotive
When, oil consumption cost is reduced, reduces air pollution, there is preferable Social benefit and economic benefit.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modifications, equivalent replacements and improvements are made should be included within the scope of protection of this utility model.
Claims (5)
1. a kind of diesel locomotive pre-heating system, which is characterized in that including：
Alternating Current Power Supply module, the Alternating Current Power Supply module include three-phase alternating-current supply and zero curve；
High temperature water system heater circuit, including the first automatic switch, the first three-phase ac contactor, high temperature water system heating module, institute
The first automatic switch to be stated to switch including four ways, the high temperature water system heating module includes multiple ptc heaters, wherein, it is described
The four ways switch of first automatic switch is separately positioned on the three-phase circuit and the zero curve of the three-phase alternating-current supply, if
Put the input terminal that the sub switch on the three-phase circuit is respectively connected to first three-phase ac contactor, the described 1st
The output terminal of cross streams contactor is respectively connected to the ptc heater in a high temperature water system heating module；
Low temperature water system heater circuit, including the second automatic switch, the second three-phase ac contactor, low temperature water system heating module, institute
The second automatic switch to be stated to switch including three ways, the low temperature water system heating module includes multiple ptc heaters, wherein, it is described
The three ways switch of second automatic switch is separately positioned on the three-phase circuit of the three-phase alternating-current supply, and described second opens automatically
The three ways switch closed is respectively connected to the input terminal of second three-phase ac contactor, second three-phase ac contactor
Output terminal be respectively connected to ptc heater in a low temperature water system heating module；
Control circuit is connected to first three-phase ac contactor and second three-phase ac contactor, the control electricity
Road is defeated to first three-phase ac contactor and second three-phase ac contactor according to cooling water temperature in diesel locomotive
Go out control signal, with control first three-phase ac contactor and second three-phase ac contactor be in closure state or
Off-state.
2. diesel locomotive pre-heating system according to claim 1, which is characterized in that further include：
3rd automatic switch, the first end of the 3rd automatic switch are connected to the anode of DC power supply；
4th automatic switch, the first end of the 4th automatic switch is connected to the second end of the 3rd automatic switch, described
The second end of 4th automatic switch is connected to the first end of the first D.C. contactor；
First D.C. contactor, the second end of first D.C. contactor are connected to pump motor；
5th automatic switch, the first end of the 5th automatic switch is connected to the second end of the 3rd automatic switch, described
The second end of 5th automatic switch is connected to the first end of the second D.C. contactor；
Second D.C. contactor, the second end of second D.C. contactor are connected to the preheating machine oil of the diesel locomotive
Pump motor；
6th automatic switch, the first end of the 6th automatic switch is connected to the second end of the 3rd automatic switch, described
The second end of 6th automatic switch is connected to the first end of the 3rd D.C. contactor；
3rd D.C. contactor, the second end of the 3rd D.C. contactor are connected to the fuel pump electricity of the diesel locomotive
Machine.
3. diesel locomotive pre-heating system according to claim 2, which is characterized in that the control circuit includes：
7th automatic switch, the first end of the 7th automatic switch are connected to the anode of the direct current supply module；
First temperature relay, the first end of first temperature relay are connected to the second end of the 7th automatic switch,
The second end of first temperature relay is connected to the first end of second temperature relay；
The second temperature relay, the second end of the second temperature relay are connected to intermediate relay；
The intermediate relay, one end of first group of moving together contact of the intermediate relay are connected to the second temperature relay
The first end of device, the other end of first group of moving together contact of the intermediate relay are connected to the of the second temperature relay
Two ends, one end of second group of moving together contact of the intermediate relay is connected to the second end of the 7th automatic switch, described
The other end of second group of moving together contact of intermediate relay is respectively connected to the first end of first time relay, described first directly
Connect the 3rd end of contactor, high temperature preheating entering water electromagnetic valve, high temperature preheating return water solenoid valve, low-temperature prewarming entering water electromagnetic valve, low
Temperature preheating return water solenoid valve；
The first time relay, the second end of the first time relay are connected to the second of the 7th automatic switch
End, the 3rd end of the first time relay is respectively connected to first three-phase ac contactor and the described 2nd 3
Cross streams contactor, the 3rd end of second D.C. contactor, the first end of second time relay；
Second time relay, the second end of second time relay are connected to the second of the 7th automatic switch
End, the 3rd end of second time relay is connected to the anode of diode；
The diode, the cathode of the diode are connected to the 3rd end of the 3rd D.C. contactor.
4. diesel locomotive pre-heating system according to claim 3, which is characterized in that
First temperature relay in the diesel locomotive cooling water temperature be less than or equal to first temperature when, in normal
Close on-state, the second temperature actuating of relay is to connect the coil power of the intermediate relay, the intermediate relay
First group of moving together contact of device is connected to keep the coil power of the intermediate relay, and second group of the intermediate relay moves
It closes contact and connects the high temperature preheating entering water electromagnetic valve, the high temperature preheating return water solenoid valve, low-temperature prewarming water inlet electromagnetism
Valve and the low-temperature prewarming return water solenoid valve, first D.C. contactor and the first time relay energized action are to open
Move the pump motor；
The first time relay is after first duration that is powered, and be delayed just chain closure, the first three-phase alternating current contact
Device and second three-phase ac contactor are in closure state, respectively with first three-phase ac contactor and described second
The PCT heater startings heating that three-phase ac contactor is connected, second D.C. contactor and second time relay
Device energized action is to start the preheating machine Oil pump electrical machinery of the diesel locomotive；
Second time relay is after second duration that is powered, and be delayed just chain closure, and the 3rd D.C. contactor obtains
Electronic work is to start the fuel oil pump motor of the diesel locomotive；
First temperature relay acts when cooling water temperature is more than or equal to the second temperature in the diesel locomotive, with
The coil power of the intermediate relay is cut off, second group of moving together contact of the intermediate relay disconnects, first three-phase
A.C. contactor and second three-phase ac contactor are off, respectively with first three-phase ac contactor and
PCT heaters that second three-phase ac contactor is connected stop heating, the pump motor, the diesel locomotive it is pre-
The fuel oil pump motor of heat engine Oil pump electrical machinery and the diesel locomotive is out of service, the high temperature preheating entering water electromagnetic valve, the height
Temperature preheating return water solenoid valve, the low-temperature prewarming entering water electromagnetic valve and the low-temperature prewarming return water solenoid valve are closed.
5. diesel locomotive pre-heating system according to any one of claim 1 to 4, which is characterized in that described first is automatic
It switchs as four line automatic switch, second automatic switch is three line automatic switch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721019129.2U CN207437257U (en) | 2017-08-15 | 2017-08-15 | Diesel locomotive pre-heating system |
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| CN201721019129.2U CN207437257U (en) | 2017-08-15 | 2017-08-15 | Diesel locomotive pre-heating system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107313888A (en) * | 2017-08-15 | 2017-11-03 | 郑州铁路职业技术学院 | Diesel locomotive pre-heating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107313888A (en) * | 2017-08-15 | 2017-11-03 | 郑州铁路职业技术学院 | Diesel locomotive pre-heating system |
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