CN107313888A - Diesel locomotive pre-heating system - Google Patents
Diesel locomotive pre-heating system Download PDFInfo
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- CN107313888A CN107313888A CN201710698501.5A CN201710698501A CN107313888A CN 107313888 A CN107313888 A CN 107313888A CN 201710698501 A CN201710698501 A CN 201710698501A CN 107313888 A CN107313888 A CN 107313888A
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- Prior art keywords
- contactor
- phase
- temperature
- automatic switch
- diesel locomotive
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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
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
- F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
- F02N19/10—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of engine coolants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
- F01M5/001—Heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
- F01M5/02—Conditioning lubricant for aiding engine starting, e.g. heating
- F01M5/021—Conditioning lubricant for aiding engine starting, e.g. heating by heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/12—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating electrically
- F02M31/125—Fuel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention provides a kind of diesel locomotive pre-heating system, including：Alternating Current Power Supply module, Alternating Current Power Supply module includes three-phase alternating-current supply and zero line；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 are 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 are 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 according to cooling water temperature in diesel locomotive to the first three-phase ac contactor and the second three-phase ac contactor output control signal, to control the first three-phase ac contactor and the second three-phase ac contactor to be in closure state or off-state.
Description
Technical field
The present invention relates to technical field of diesel locomotive, in particular to a kind of diesel locomotive pre-heating system.
Background technology
Put into operation to ensure that the diesel locomotive of cold districts can start at any time, regulation diesel engine lubricating oil, cooling
Coolant-temperature gage must keep more than 20 DEG C, therefore pre-heating system is provided with 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, to be made in locomotive operation, correlation technique, using preboiler to locomotive oil
Water system is preheated, but existing diesel locomotive preboiler is present that volume is big, efficiency is low, seriously polluted, operation inconvenient maintenance
Etc. defect.
The content of the invention
The present invention is based at least one above-mentioned technical problem, it is proposed that a kind of new diesel locomotive pre-heating system, knot
Close ptc heater to be preheated, while the pre- heat demand of diesel locomotive is met, reduce oil consumption cost, reduce air pollution,
With preferable Social benefit and economic benefit.
In view of this, the present invention proposes a kind of diesel locomotive pre-heating system, including：Alternating Current Power Supply module, the exchange
Power supply module includes three-phase alternating-current supply and zero line；High temperature water system heater circuit, including the first automatic switch, first three-phase
A.C. contactor, high temperature water system heating module, first automatic switch are switched including four ways, the high temperature water system heated mould
Block includes multiple ptc heaters, wherein, the four ways switch of first automatic switch is separately positioned on the three-phase alternating current
On the three-phase circuit in source and the zero line, the sub switch being arranged on the three-phase circuit is respectively connecting to first three-phase
The input of A.C. contactor, the output end of first three-phase ac contactor is respectively connecting to high temperature water system described in one and heated
Ptc heater in module；Low temperature water system heater circuit, including the second automatic switch are second three-phase ac contactor, low
Warm water system heating module, second automatic switch is switched including three ways, and the low temperature water system heating module includes multiple PTC
Heater, wherein, the three ways switch of second automatic switch is separately positioned on the three-phase circuit of the three-phase alternating-current supply
On, the three ways switch of second automatic switch is respectively connecting to the input of second three-phase ac contactor, described
The output end of second three-phase ac contactor is respectively connecting to the ptc heater in low temperature water system heating module described in one；Control
Circuit, is connected to first three-phase ac contactor and second three-phase ac contactor, the control circuit is in
Cooling water temperature is believed to first three-phase ac contactor and the second three-phase ac contactor output control in combustion locomotive
Number, to control first three-phase ac contactor and second three-phase ac contactor to be in closure state or disconnect shape
State.
In the technical scheme, PTC（Positive Temperature Coefficient ）Heater has constant temperature hair
The advantage such as heat, thermal conversion rate height, strong antijamming capability, service life length, the high temperature water system of whole diesel locomotive pre-heating system adds
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 closure or disconnected, 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 it is described 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, by controlling circuit to control the first three-phase ac contactor and the second three-phase ac contactor
Closure or disconnection, realize automatically controlling for whole 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 real needs, 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 scheme, it is preferable that also include：3rd automatic switch, the 3rd automatic switch
First end is connected to the positive pole of DC power supply；4th automatic switch, the first end of the 4th automatic switch is 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 is 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 is 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 is connected to the fuel oil pump motor of the diesel locomotive.
In any of the above-described technical scheme, it is preferable that the control circuit includes：7th automatic switch, the described 7th
The first end of automatic switch is connected to the positive pole 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 middle after
Electrical equipment；The auxiliary reclay, one end of first group of moving together contact of the auxiliary reclay be connected to the second temperature after
The first end of electrical equipment, the other end of first group of moving together contact of the auxiliary reclay is connected to the second temperature relay
Second end, one end of second group of moving together contact of the auxiliary reclay is connected to the second end of the 7th automatic switch, institute
The other end for stating second group of moving together contact of auxiliary reclay is respectively connecting to the first end of very first time relay, described first
3rd end of direct contactor, high temperature preheating entering water electromagnetic valve, high temperature preheating backwater magnetic valve, low-temperature prewarming entering water electromagnetic valve,
Low-temperature prewarming backwater magnetic valve；The very first time relay, the second end of the very first time relay is connected to described
Second end of seven automatic switch, the 3rd end of the very first time relay is respectively connecting 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 is connected to the second of the 7th automatic switch
End, the positive pole of the three-terminal link of second time relay to diode；The diode, the negative pole of the diode connects
It is connected to the 3rd end of the 3rd D.C. contactor.
In any of the above-described technical scheme, it is preferable that first temperature relay is cooled 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 auxiliary reclay is stated, first group of moving together contact of the auxiliary reclay is connected to keep the auxiliary reclay
Coil power, second group of moving together contact of the auxiliary reclay connect the high temperature preheating entering water electromagnetic valve, the high temperature
Backwater magnetic valve, the low-temperature prewarming entering water electromagnetic valve and the low-temperature prewarming backwater magnetic valve are preheated, first direct current connects
Tentaculum and the very first time relay energized action are to start the pump motor；The very first time relay is being powered the
After one duration, its just chain closure that is delayed, 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, and second D.C. contactor and second time relay energized action are to start the diesel locomotive
Preheating machine Oil pump electrical machinery；Second time relay is after second duration that is powered, its just chain closure that is delayed, 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
Acted when cooling water temperature is more than or equal to the second temperature in car, it is described to cut off the coil power of the auxiliary reclay
Second group of moving together contact of auxiliary reclay disconnects, and the first three-phase ac contactor described in described first 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 and the diesel locomotive of the diesel locomotive
Fuel oil pump motor it is out of service, the high temperature preheating entering water electromagnetic valve, the high temperature preheating backwater magnetic valve, the low temperature are pre-
Hot entering water electromagnetic valve and the low-temperature prewarming backwater closed electromagnetic valve.Wherein, the first duration and the second duration are preferably 20 seconds.
In any of the above-described technical scheme, it is preferable that first automatic switch is four line automatic switch, described second
Automatic switch is three line automatic switch.
By above technical scheme, preheated with reference to ptc heater, meeting the same of the pre- heat demand of diesel locomotive
When, oil consumption cost is reduced, air pollution is reduced, with preferable Social benefit and economic benefit.
Brief description of the drawings
Fig. 1 shows the main circuit diagram of diesel locomotive pre-heating system according to an embodiment of the invention；
Fig. 2 shows the circuit diagram of the control circuit in diesel locomotive pre-heating system according to an embodiment of the invention.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
Implemented with being different from other modes described here using other, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Technical scheme 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 includes three
Cross streams power supply and zero line；High temperature water system heater circuit 104, including the first automatic switch 106（Such as the QF1 in Fig. 1）, described
One three-phase ac contactor 108（KM1 shown in Fig. 1）, high temperature water system heating module 110, first automatic switch 106 includes
Four ways are switched, and 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 electricity of the three-phase alternating-current supply
On road and the zero line, the sub switch being arranged on the three-phase circuit is respectively connecting to first three-phase ac contactor
108 input, the output end of first three-phase ac contactor 108 is respectively connecting to high temperature water system heating module described in one
Ptc heater 1102 in 110；Low temperature water system heater circuit 112, including the second automatic switch 114（QF2 in Fig. 1）, it is described
Second three-phase ac contactor 116（KM2 in Fig. 1）, low temperature water system heating module 118, second automatic switch 114 includes
Three ways are switched, and 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
Lu Shang, the three ways switch of second automatic switch 114 is respectively connecting to the input of second three-phase ac contactor 116
End, the output end of second three-phase ac contactor 116 is respectively connecting in low temperature water system heating module 118 described in one
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 the output control signal of the second three-phase ac contactor 116, 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
PTC is used in the advantage such as long, the high temperature water system heater circuit and low temperature water system heater circuit of whole diesel locomotive pre-heating system
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 disconnected, and to realize the control to ptc heater working condition, meet the preheating of diesel locomotive
While demand, oil consumption cost is reduced, air pollution is reduced, with preferable Social benefit and economic benefit.Wherein, three intersect
Power supply is flowed to be provided by auxiliary diesel generater set or external power.
In the above-mentioned technical solutions, it is preferable that the control cooling water temperature in the diesel locomotive of circuit 120 is less than
During equal to the first temperature, control first three-phase ac contactor 108 and second three-phase ac contactor 116 to be in and close
Conjunction state, the control circuit 120 controls described the when cooling water temperature is more than or equal to second temperature in the diesel locomotive
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, by controlling circuit to control the first three-phase ac contactor and the second three-phase ac contactor
Closure or disconnection, realize automatically controlling for whole 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 real needs, 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 provide for " auxiliary diesel generater set " or " supply socket of being powered outside locomotive "
3AC 220V/50HZ power supplys, the first via, by the line automatic switch " QF1 " of DZ5-20/410 tetra- and CJ20-40 three-phase alternating currents
Contactor " KM1 ", connects three groups of series connection ptc heaters of high temperature water system heating module（Power is 3X4KW）；Another road, passes through
The line automatic switch " QF2 " of DZ5-20/310 tri- and CJ20-40 three-phase ac contactors " KM2 ", connect low temperature water system heating module
Three groups of series connection ptc heaters（Power is 3X4KW）；" QF1 " and " QF2 " automatic switch also known as air-break, are a kind of
Electric current in circuit is wanted to exceed the switch that rated current will disconnect automatically.It integrates control and multi-protective function, decapacitation
Complete to connect with outside disjunction circuit, short circuit, heavy overload and under-voltage that can still occur circuit or electrical equipment 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 each 4KW of two sets of water system series connection PTC 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, circuitry cuts are controlled
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
Each 4KW of water system series connection PTC Water pipe heating devices, stop carrying out locomotive water system preheating.
As shown in Figure 2, it is preferable that diesel locomotive pre-heating system also includes：3rd automatic switch 122（QF3 in Fig. 2）,
The first end of 3rd automatic switch 122 is connected to the positive pole 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
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 is 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,
Second end of the 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 is 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 connects
It is connected to the fuel oil pump motor 140 of the diesel locomotive（MD3 in Fig. 2）.
The partial circuit carries water circulation, oil circulation and fuel oil the circulation warm-up tasks of diesel locomotive pre-heating system,
The DC110V that DC power supply can provide for " auxiliary diesel generater set " or " supply socket of being powered outside locomotive ", electric current exists
Within 7--10A, pre-heating system water circulation group of motors still uses the original pump motor group MD1 of preheating furnace, and 1 set of 20A of increase connects
Tentaculum KM3 and 1 set of 20A monopole automatic switch QF4, pre-heating system oil circulation group of motors is still using the original lubricating oil pump electricity of preheating furnace
Unit MD2, and increase by 1 set of 20A contactors KM4 and 1 set of 20A monopole automatic switch QF5, fuel-firing preheating circulation motor group is still used
The original fuel pump group of motors 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 positive pole 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
Second end of second temperature relay 146 is connected to auxiliary reclay 148；The auxiliary reclay 148（KA in Fig. 2）, institute
The one end for stating first group of moving together contact of auxiliary reclay 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 auxiliary reclay 148 is connected to the second end of the second temperature relay 146, described
One end of second group of moving together contact of auxiliary reclay 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 connecting to very first time relay 150（KT1 in Fig. 2）
One end, the 3rd end of the first direct contactor 126, high temperature preheating entering water electromagnetic valve 152（MB1 in Fig. 2）, high temperature preheating
Backwater magnetic valve 154（MB2 in Fig. 2）, low-temperature prewarming entering water electromagnetic valve 156（MB3 in Fig. 2）, low-temperature prewarming backwater electromagnetism
Valve 158（MB4 in Fig. 2）；The very first time relay 150, the second end of the very first time relay 150 is connected to institute
The second end of the 7th automatic switch 142 is stated, the 3rd end of the very first time relay 150 is respectively connecting 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 connects
It is connected to the second end of the 7th automatic switch 142, the three-terminal link of second time relay 160 to diode 162
Positive pole；The diode 162, the negative pole of the diode 162 is connected to the 3rd end of the 3rd D.C. contactor 138.
In any of the above-described technical scheme, 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 auxiliary reclay 148, first group of moving together contact of the auxiliary reclay 148 is connected to keep described
The coil power of auxiliary reclay 148, second group of moving together contact of the auxiliary reclay 148 connects the high temperature preheating water inlet
Magnetic valve 152, the high temperature preheating backwater magnetic valve 154, the low-temperature prewarming entering water electromagnetic valve 156 and the low-temperature prewarming are returned
Water solenoid valve 158, first D.C. contactor 126 and the energized action of very first time relay 150 are to start the water
Pump motor 128；The very first time relay 150 is after first duration that is powered, its 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 the energized action of second time relay 160 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, its just chain closure that is delayed, 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 is acted when being more than or equal to the second temperature, to cut off the coil power of the auxiliary reclay 148, it is described in
Between relay 148 second group of moving together contact disconnect, the first three-phase ac contactor 108 and the described 2nd 3 described in described first
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 backwater magnetic valve 154, the low-temperature prewarming entering water electromagnetic valve 156 and the low-temperature prewarming backwater magnetic 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
Individual electromagnetic valve（MB1~ MB4）Adhesive, opens the water route of pre-heating system；Meanwhile, warm-up cycle water pump contactor KM3（DC110V）
With time relay KTI（DC110V）Energized action, starts DC110V/0.8KW warm-up cycle water pump direct current generator simultaneously
MD1, makes the water route of diesel locomotive pre-heating system unimpeded and starts the cycle over；After delay 20 seconds, time relay KT1 delay just connects
Locking is closed, and automatically controls two groups of three-phase alternating current 20A electromagnetic contactors closures（Coil voltage DC110V）, two sets of 6 groups of AC220V/
4KW ptc heater heating, the temperature of rapid heater overall height low-temperature circulating water；Meanwhile, preheating lubricating oil pump contactor KM4
（DC110V）With time relay KT2（DC110V）Energized action, starts DC110V/0.6KW preheating lubricating oil pump direct current simultaneously
Motor, starts to preheat the lubricating oil system of diesel engine of locomotive；After after 20 seconds, time relay KT2 delay is just chain
Closure, automatically controls locomotive fuel pump motor contactor KM5 energized actions（DC110V）, make diesel locomotive DC110V/0.6KW's
Fuel pump is operated, and by the oil preheater of locomotive, automatic preheating is carried out to locomotive fuel oil oil using warm water；Can be certainly to realize
Dynamic control, prevents the interference of pre- heater circuit and original diesel locomotive circuit, in pre-heating system automatic control circuit and internal combustion engine again
Increase by 1 set of 400V/2A diode in the original fuel pump contactor control circuit of car；When Cooling Water of Diesel Locomotive temperature >=70 °C
Afterwards, locomotive temperature relay KTE1 is acted, and cut-out auxiliary reclay KA power supply, its 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, two sets of 6 groups of AC220V/4KW ptc heater heating is because disconnected
Electricity stops heating simultaneously；Meanwhile, locomotive preheats 3 groups " water pump and Oil pump electrical machineries " of water system（MD1、MD2、MD3）And 4 magnetic valves
（MB1~ MB4）, it is automatic to close, recover locomotive running state；Now, you can start the big diesel engine operation of locomotive（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 scheme, 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
Select and be 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 part such as " diesel generating set " and the installation of original preboiler
Position and weight are essentially identical, meet regulation again with the gross weight and axle that ensure diesel locomotive, during transformation, be as far as possible using interior
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.
Technical scheme is described in detail above in association with accompanying drawing, and technical scheme proposes a kind of new
Diesel locomotive pre-heating system, is preheated with reference to ptc heater, while the pre- heat demand of diesel locomotive is met, reduction oil
Cost is consumed, air pollution is reduced, with preferable Social benefit and economic benefit.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (6)
1. a kind of diesel locomotive pre-heating system, it is characterised in that including：
Alternating Current Power Supply module, the Alternating Current Power Supply module includes three-phase alternating-current supply and zero line；
High temperature water system heater circuit, including the first automatic switch, first three-phase ac contactor, high temperature water system heated mould
Block, first automatic switch is switched including four ways, and the high temperature water system heating module includes multiple ptc heaters, wherein,
The four ways switch of first automatic switch is separately positioned on the three-phase circuit and the zero line of the three-phase alternating-current supply
On, the sub switch being arranged on the three-phase circuit is respectively connecting to the input of first three-phase ac contactor, described
The output end of first three-phase ac contactor is respectively connecting to the ptc heater in high temperature water system heating module described in one；
Low temperature water system heater circuit, including the second automatic switch, second three-phase ac contactor, low temperature water system heated mould
Block, second automatic switch is switched including three ways, and the low temperature water system heating module includes multiple ptc heaters, wherein,
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 certainly
The three ways switch of dynamic switch is respectively connecting to the input of second three-phase ac contactor, and second three-phase alternating current connects
The output end of tentaculum is respectively connecting to the ptc heater in low temperature water system heating module described in one；
Circuit is controlled, first three-phase ac contactor and second three-phase ac contactor, the control electricity is connected to
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, it is characterised in that
The control circuit controls first three-phase when cooling water temperature is less than or equal to the first temperature in the diesel locomotive
A.C. contactor and second three-phase ac contactor are in closure state, and the control circuit is cold in the diesel locomotive
But when coolant-temperature gage is more than or equal to second temperature, first three-phase ac contactor and second three-phase ac contactor are controlled
It is off；
Wherein, first temperature is less than the second temperature.
3. diesel locomotive pre-heating system according to claim 2, it is characterised in that also include：
3rd automatic switch, the first end of the 3rd automatic switch is connected to the positive pole 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
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 is 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
Second end of the 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 is 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
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 is connected to the fuel pump electricity of the diesel locomotive
Machine.
4. diesel locomotive pre-heating system according to claim 3, it is characterised in that the control circuit includes：
7th automatic switch, the first end of the 7th automatic switch is connected to the positive pole of the direct current supply module；
First temperature relay, the first end of first temperature relay is connected to the second end of the 7th automatic switch,
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 is connected to auxiliary reclay；
The auxiliary reclay, one end of first group of moving together contact of the auxiliary reclay is connected to the second temperature relay
The first end of device, the other end of first group of moving together contact of the auxiliary reclay is connected to the of the second temperature relay
Two ends, one end of second group of moving together contact of the auxiliary reclay is connected to the second end of the 7th automatic switch, described
The other end of second group of moving together contact of auxiliary reclay is respectively connecting to the first end of very first time relay, described first straight
Connect the 3rd end of contactor, it is high temperature preheating entering water electromagnetic valve, high temperature preheating backwater magnetic valve, low-temperature prewarming entering water electromagnetic valve, low
Temperature preheating backwater magnetic valve；
The very first time relay, the second end of the very first time relay is connected to the second of the 7th automatic switch
End, the 3rd end of the very first time relay is respectively connecting 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 is connected to the second of the 7th automatic switch
End, the positive pole of the three-terminal link of second time relay to diode；
The diode, the negative pole of the diode is connected to the 3rd end of the 3rd D.C. contactor.
5. diesel locomotive pre-heating system according to claim 4, it is characterised 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 auxiliary reclay, the middle relay
First group of moving together contact of device is connected to keep the coil power of the auxiliary reclay, and second group of the auxiliary reclay is moved
Close contact and connect the high temperature preheating entering water electromagnetic valve, the high temperature preheating backwater magnetic valve, low-temperature prewarming water inlet electromagnetism
Valve and the low-temperature prewarming backwater magnetic valve, first D.C. contactor and the very first time relay energized action are to open
Move the pump motor；
The very first time relay is after first duration that is powered, its just chain closure that is delayed, 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 its just chain closure that is delayed, the 3rd D.C. contactor is obtained
Electronic work is to start the fuel oil pump motor of the diesel locomotive；
First temperature relay is acted when cooling water temperature is more than or equal to the second temperature in the diesel locomotive, with
The coil power of the auxiliary reclay is cut off, second group of moving together contact of the auxiliary reclay disconnects, described in described first
First three-phase ac contactor and second three-phase ac contactor are off, respectively with first three-phase alternating current
The PCT heaters that contactor is connected with second three-phase ac contactor stop heating, the pump motor, the internal combustion
The preheating machine Oil pump electrical machinery of locomotive and the fuel oil pump motor of the diesel locomotive are out of service, the high temperature preheating water inlet electromagnetism
Valve, the high temperature preheating backwater magnetic valve, the low-temperature prewarming entering water electromagnetic valve and the low-temperature prewarming backwater closed electromagnetic valve.
6. diesel locomotive pre-heating system according to any one of claim 1 to 5, it is characterised in that described first is automatic
Switch as four line automatic switch, second automatic switch is three line automatic switch.
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| CN201710698501.5A CN107313888A (en) | 2017-08-15 | 2017-08-15 | Diesel locomotive pre-heating system |
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| DD218650A1 (en) * | 1983-07-19 | 1985-02-13 | Busch Rolf Gerd | CIRCUIT ARRANGEMENT FOR REGULATING THE FORCED FLOW OF A HEATING CIRCUIT FOR THE HEATING AND HEATING OF A DRIVE MOTOR |
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Application publication date: 20171103 |