CN107414271A - A kind of flash welding machine for fixed steel rail high power DC welding power source system - Google Patents
A kind of flash welding machine for fixed steel rail high power DC welding power source system Download PDFInfo
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- CN107414271A CN107414271A CN201710606280.4A CN201710606280A CN107414271A CN 107414271 A CN107414271 A CN 107414271A CN 201710606280 A CN201710606280 A CN 201710606280A CN 107414271 A CN107414271 A CN 107414271A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/04—Flash butt welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/04—Flash butt welding
- B23K11/043—Flash butt welding characterised by the electric circuits used therewith
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
- E01B31/02—Working rail or other metal track components on the spot
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
- E01B31/02—Working rail or other metal track components on the spot
- E01B31/18—Reconditioning or repairing worn or damaged parts on the spot, e.g. applying inlays, building-up rails by welding; Heating or cooling of parts on the spot, e.g. for reducing joint gaps, for hardening rails
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/26—Railway- or like rails
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Inverter Devices (AREA)
- Arc Welding Control (AREA)
Abstract
The application provides a kind of flash welding machine for fixed steel rail high power DC welding power source system, including major loop breaker (1), welding power source main loop (2), central processing unit (3), voltage x current control circuit (4) and cold water circulating system (5), the major loop breaker (1) is connected with welding power source main loop (2), welding power source main loop (2) connection cold water circulating system (5)；Central processing unit (3) controls welding power source main loop (2) by voltage x current control circuit (4), and welding power source main loop (2) communicates with central processing unit (3).Pass through the flash welding machine for fixed steel rail high power DC welding power source system of the present invention, pass through temperature, electric current, voltage and the monitoring of cooling water circulation situation and the addition of early warning system, can effective guarantee power supply stability, prevent because the failure of the source of welding current causes welding machine state change, so as to effective guarantee welding quality.
Description
Technical field
The present invention relates to railway security field, especially a kind of flash welding machine for fixed steel rail welds electricity with high power DC
Source system.
Background technology
Currently used for the welding machine power supply of rail flash welding, AC power and straight can be divided into according to jaw voltage class
Flow power supply.It is more using the steel rail flash welding machine of AC power both at home and abroad, mainly there is Ukraine bar institute of welding development life
The K series of flashes welding machine (K335, K190, K900, K920, K922, K1000, K1100 type etc.) of production, the life of Holland companies of the U.S.
K335H shaped steel rails flash welder, AMS60 and AMS100 shaped steel rails flash welder, the Chinese railway of the production of Su Laite groups of production
The YHG-1200TH types of research institute's development and production, the YHG-1200Q types of Zhong Cheqi villas weir rolling stock Research Institute and
YHG-750 shaped steel rail flash welders that Southwest Jiaotong University develops etc.；And use the steel rail flash welding machine of dc source less, it is main
The welding machines such as GAAS80/580, GAAS80/700 type of Yao You Su Laite groups development and production.
Alternating current rail flash welding machine power supply using two single-phase welding transformers structure in parallel, only make use of power network or
Two-phase in genset three-phase power supply, the problem of unbalance loading and relatively low power factor be present；Direct current rail flash welding electricity
Source employs the structure of primary side three-phase thyristor pressure regulation compared with AC power, and three-phase load is more balanced, and power factor
It is of a relatively high.
The country also has some research institutions to develop direct current rail flash welding power supply, but is concentrated mainly on inversion direct current power supply
Research, it is different from direct pressure regulation, the rectification described in this patent, and there is no fault self-diagnosis and prior-warning device.
Some external steel rail flash welding machines employ direct pressure regulation, the direct current source of welding current of rectifier structure, and as is known one
Circuit arrangement of the kind with multiple electrical equipments to be cooled down, is shown in Chinese patent CN 1031167A, and it is mainly characterized by rail sudden strain of a muscle
The electrical equipment to be cooled down in photocoagulation power supply is connected to via the cooling duct in electric conductor as parallel cooling recirculation system
In cooling medium distributed lines, the whole Machine Design of circuit arrangement takes layer structure, formed one it is stable in electrodynamics,
Space-efficient layout type, without separately setting annex again between each component.But not to every in power supply in the type power supply
Individual part enters the inspection of trip temperature and water cooling situation, also without corresponding prior-warning device.
The content of the invention
To overcome the defects of existing, the present invention proposes a kind of flash welding machine for fixed steel rail high power DC source of welding current
System.
A kind of flash welding machine for fixed steel rail high power DC welding power source system, including major loop breaker, welding
Power supply major loop, central processing unit, voltage x current control circuit and cold water circulating system, the major loop breaker and welding electricity
Source major loop connection, welding power source main loop connection cold water circulating system；Central processing unit passes through voltage x current control circuit control
Welding power source main loop processed, welding power source main loop communicate with central processing unit；
Central processing unit passes through voltage sensor, current sensor, flow sensor, temperature sensor and electrical conductivity respectively
The parts such as sensor gather every physical parameter in main circuit and cold water circulating system.
Wherein, the central processing unit includes fault self-diagnosis system, can gather welding major loop and circulating chilled water system
The voltage of system, electric current, temperature, flow, conductivity data.
Wherein, welding power source main loop include Current Voltage sensor, pressure regulation IGCT combination, welding transformer combination and
Diode rectification composite module.
Wherein, the first welding transformer, the second welding transformer and the 3rd welding transformation are detected in Current Voltage sensor
The electric current and voltage of device, wherein, the first welding transformer is respectively communicated with the first current sensor, first voltage sensor and first
Pressure regulation IGCT；Second welding transformer is respectively communicated with the second current sensor, second voltage sensor and the second pressure regulation crystalline substance lock
Pipe；3rd welding transformer is respectively communicated with the 3rd current sensor, tertiary voltage sensor and the 3rd pressure regulation IGCT.
Wherein, in the combination of pressure regulation IGCT, corresponding each IGCT, the first temperature sensor is installed on IGCT.
Wherein, in diode rectification composite module, corresponding each commutation diode, second temperature is installed on the diode and passed
Sensor.
Wherein, in welding transformer combination, corresponding first welding transformer, the second welding transformer and the 3rd welding transformation
Device sets the combination of the first primary coil, the combination of the second primary coil and the combination of the 3rd primary coil respectively；First primary coil group
Close, three-temperature sensor is installed respectively in the combination of the second primary coil and the combination of the 3rd primary coil.
Wherein, the quantity of the first temperature sensor, second temperature sensor and three-temperature sensor is multiple.
Wherein, in welding power source main loop, each component has Water-cooling circulating part, by cooling-water machine provide low-temperature cooling water and
Circulation power, each component respectively install cooling water flow sensor and differential pressure pickup.
By the present invention flash welding machine for fixed steel rail high power DC welding power source system, by temperature, electric current,
The monitoring of voltage and cooling water circulation situation and the addition of early warning system, can effective guarantee power supply stability, prevent because welding
The failure of power supply causes welding machine state change, so as to effective guarantee welding quality.
Brief description of the drawings
Fig. 1 is high power DC welding power source system structural representation；
Fig. 2 is welding power source main loop schematic diagram；
Fig. 3 is voltage, current acquisition principle schematic；
Fig. 4 is that pressure regulation IGCT combines medium temperature degree sensor scheme of installation；
Fig. 5 is temperature sensor scheme of installation in commutation diode combination；
Fig. 6 is temperature sensor scheme of installation in welding transformer；
Fig. 7 is cooling water condition monitoring principle schematic.
Embodiment
Below in conjunction with the accompanying drawings with specific embodiment to a kind of flash welding machine for fixed steel rail provided by the invention with high-power
Direct current welding power source system is described in detail.
Fig. 1 shows that a kind of flash welding machine for fixed steel rail high power DC welding power source system, including major loop are breaking
Device 1, welding power source main loop 2, central processing unit 3, voltage x current control circuit 4 and cold water circulating system 5, the major loop break
Road device 1 is connected with welding power source main loop 2, and welding power source main loop 2 connects cold water circulating system 5；Central processing unit 3 passes through electricity
Piezoelectricity flow control circuit 4 controls welding power source main loop 2, and welding power source main loop 2 communicates with central processing unit 3；Central processing
Device 3 controls major loop breaker 1 and cold water circulating system 5 respectively.
Major loop breaker 1 is used for the break-make for controlling whole power supply, and in case of emergency class receives the life of central processing unit
Order is cut off the electricity supply by force, its protective effect.
Fig. 2 shows that welding power source main loop 2 includes Current Voltage sensor 21, pressure regulation IGCT combination 22, welding transformation
Device combination 23 and diode rectification composite module 24.By the power supply of major loop breaker, enter by pressure regulation IGCT combination 22
Row small range voltage-regulation, then 23 progress large scale voltage-regulations are combined by welding transformer, finally combined by diode rectification
Low AC voltage Power convert into dc source and is supplied directly to rail to be welded by module 24.
Fig. 3 shows that Current Voltage sensor 21 includes the first welding transformer 231, the second welding transformer 232 and
Three welding transformers 233, wherein, the first welding transformer 231 is respectively communicated with the first current sensor 211, first voltage sensing
The pressure regulation IGCT 221 of device 212 and first；Second welding transformer 232 is respectively communicated with the second current sensor 213, second voltage
The pressure regulation IGCT 222 of sensor 214 and second；3rd welding transformer 233 is respectively communicated with the 3rd current sensor the 215, the 3rd
The pressure regulation IGCT 223 of voltage sensor 216 and the 3rd.
Fig. 4 is shown, in pressure regulation IGCT combination 22, corresponding each IGCT, the first TEMP is installed on IGCT
Device 224.
Fig. 5 is shown, in diode rectification composite module 24, corresponding each commutation diode, installs second on the diode
Temperature sensor 241.
Fig. 6 is shown, in welding transformer combination 23, corresponding first welding transformer 231, the and of the second welding transformer 232
3rd welding transformer 233 sets the first primary coil to combine the combination 235 of the 234, second primary coil and the 3rd primary line respectively
Circle combination 236；First primary coil is combined in the combination 235 of the 234, second primary coil and the 3rd primary coil combination 236 respectively
Three-temperature sensor 237 is installed.
The quantity of first temperature sensor 224, second temperature sensor 241 and three-temperature sensor 237 is multiple.
Fig. 7 is shown, in welding power source main loop 2, each component has Water-cooling circulating part, and low temperature cold is provided by cooling-water machine 51
But water and circulation power, each component respectively install cooling water flow sensor 52 and differential pressure pickup 53.
The signal that central processing unit 3 transmits according to each passage carries out arithmetic sum logical operation, sends in abnormal cases pre-
Alert signal；In case of emergency, major loop breaker 1 and voltage x current control circuit are controlled, is cut off the electricity supply in time.
Power supply accesses source of welding current master by power network or generating set via main circuit breaker 1 when the source of welding current works
Loop 2；Pressure regulation IGCT combination in welding power source main loop 2 realizes loop electricity by the conduction ratio of power supply in control loop
The small range regulation of pressure；Primary voltage is reduced to by the welding transformer in welding power source main loop 2 can be used for rail welding
Alternating voltage；Finally, it is by the diode rectification composite module in welding power source main loop 2 that the AC power of low-voltage is whole
Stream, form dc source and be supplied directly on rail to be welded.
In source of welding current running, pass through current sensor 211,213,215 and voltage sensor 212,214,216
The electric current and voltage of each welding transformer in welding transformer combination 23 are gathered, and is sent in central processing unit 3.Root
According to the attachment structure principle of welding power source main loop 2, in the case of source of welding current normal work, the voltage and electricity of each transformer
Stream should be identical, and matches with welding procedure.If central processing unit finds that current and voltage signals are abnormal by calculating,
Pre-warning signal can be sent immediately；When there is dangerous situation, the instruction cut off the electricity supply is sent, passes through Current Voltage control circuit 4
The power supply of welding power source main loop 2 is cut off with major loop breaker 1.
Pass through the temperature in pressure regulation IGCT combination 22, welding transformer group 23 and diode rectification composite module 24
The temperature of each part in Sensor monitoring welding power source main loop 2 is spent, and is sent in central processing unit 3.In the source of welding current just
Often during work, the temperature of same item answers close and synchronization lifting.In central processing unit 3 some part temperatures is found by calculating
Too high or temperature change delay, you can send early warning, instruct plant maintenance personnel to be overhauled；If temperature is higher by safe wiring
When, source of welding current supply is cut off while sending early warning.
Pass through the cooling water flow sensor 52 and differential pressure pickup installed in welding power source main loop difference cooling duct
53, cooling water flow and pressure change in different circuit are monitored, and be sent to central processing unit 3.In the normal work of the source of welding current
In the state of work, the flow of each cold water channel uniformly, stably, and should meet the cooling requirement of each heat generating components.In central processing
When device 3 finds that anomalous variation occurs for the cooling water flow of indivedual cooling ducts or pressure, pre-warning signal can be sent；If bulk flow
Amount is less than or during more than safety margin, and central processing unit 3 can send instruction of cutting off the electricity supply while pre-warning signal is sent.
Fault self-diagnosis system is calculated, obtained according to the voltage of acquisition, electric current, temperature, flow, conductivity data
System failure characteristic information simultaneously searches matching failure diagnosis information from Fault Diagnosis Database,
Wherein, according to the voltage of collection welding major loop (2) and cold water circulating system (5), electric current, temperature, flow, conductance
Fault message of the rate data under all situations establishes expression formula and is：
A. the first welding transformer (231), the second welding transformer (232) and the 3rd welding transformer collected
(233) voltage is respectively V1, V2, V3, when voltage meets following whole expression formulas, is considered as power supply normal work, otherwise event
Barrier self-diagnosable system will be prompted to electric voltage exception：
(V1+V2+V3)/3-10<V1<(V1+V2+V3)/3+10
(V1+V2+V3)/3-10<V2<(V1+V2+V3)/3+10
(V1+V2+V3)/3-10<V3<(V1+V2+V3)/3+10
When meeting following any one group of expression formula, fault self-diagnosis sends signal, the source of welding current is stopped：
(V1+V2+V3)/3-20>V1、(V1+V2+V3)/3+20<V1
(V1+V2+V3)/3-20>V1、(V1+V2+V3)/3+20<V1
(V1+V2+V3)/3-20>V1、(V1+V2+V3)/3+20<V1
B. electric current I1, I2, I3 of each welding transformer are measured, when electric current meets following whole expression formulas, is considered as electricity
Source normal work, otherwise fault self-diagnosis system will be prompted to electric voltage exception：
(I1+I2+I3)/3-10<I1<(I1+I2+I3)/3+10
(I1+I2+I3)/3-10<I2<(I1+I2+I3)/3+10
(I1+I2+I3)/3-10<I3<(I1+I2+I3)/3+10
When meeting following any one group of expression formula, fault self-diagnosis sends signal, the source of welding current is stopped：
(I1+I2+I3)/3-20>I1、(I1+I2+I3)/3+20<I1
(I1+I2+I3)/3-20>I2、(I1+I2+I3)/3+20<I2
(I1+I2+I3)/3-20>I3、(I1+I2+I3)/3+20<I3
C. the first temperature sensor (224), second temperature sensor (241) and three-temperature sensor (237) measurement are single
The temperature value T of individual part, when the temperature value T of single part is more than same item temperature averages Ta more than 3 DEG C or more than temperature
During high alarm setting during Tm, fault self-diagnosis system sends heat alarm；As single part temperature exceedes same item temperature
Ta10 DEG C of average value or during more than temperature upper absolute limit Tmax, fault self-diagnosis system sends signal, stops power work.
D. flow sensor (52) is installed respectively in 3 duplexures of cold water circulating system (5), measures cooling water flow
Respectively Q1, Q2, Q3, when flow meets following whole expression formulas, it is considered as power supply normal work, otherwise fault self-diagnosis system
It will be prompted to Traffic Anomaly：
Vmin (minimum total flow)<(Q1+Q2+Q3)<Vmax (maximum total flow)
((Q1+Q2+Q3)*0.9)/3<Q1<((Q1+Q2+Q3)*1.1)/3
((Q1+Q2+Q3)*0.9)/3<Q2<((Q1+Q2+Q3)*1.1)/3
((Q1+Q2+Q3)*0.9)/3<Q3<((Q1+Q2+Q3)*1.1)/3
When meeting following any one group of expression formula, fault self-diagnosis sends signal, the source of welding current is stopped：
(Q1+Q2+Q3)*0.8/3>Q1、(Q1+Q2+Q3)*1.2/3<Q1
(Q1+Q2+Q3)*0.8/3>Q2、(Q1+Q2+Q3)*1.2/3<Q2
(Q1+Q2+Q3)*0.8/3>Q3、(Q1+Q2+Q3)*1.2/3<Q3
Vmin*0.9>(Q1+Q2+Q3)、(Q1+Q2+Q3)>Vmax*1.1
E. when cooling water temperature Tw exceedes temperature upper limit Twmax, fault self-diagnosis system sends alarm signal, exceedes
Stop power work during Twmax*1.1.
F. when cooling water conductivity k is more than 100 μ S/cm, fault self-diagnosis system sends alarm signal, more than 200 μ
During S/cm, stop power work.
The purpose of the present invention is the demand based on current efficient, stable rail welding power supply, further improves rail weldering
Connect the reliability and fault pre-alarming ability of power supply.
By inventing the temperature sensor being arranged in pressure regulation IGCT, welding transformer and rectifier diodes module,
Realize the temperature conditions monitoring of source of welding current difference part；Voltage sensor on welding transformer, gather each weldering
Connect the voltage change situation of transformer；Electric current of the current sensor collection of each welding transformer per circuitry phase；Cooling water leads to
The flow sensor and differential pressure pickup in road detect the cooling water flow of different parts；By central processing unit to the various of power supply
Signal is acquired and calculated, and judges power supply running status.
Finally it should be noted that above example is only describing technical scheme rather than to this technology method
Limited, the present invention can above extend to other modifications, change, application and embodiment, and it is taken as that institute in application
There are such modification, change, application, embodiment all in the range of the spirit or teaching of the present invention.
Claims (9)
1. a kind of flash welding machine for fixed steel rail high power DC welding power source system, including major loop breaker (1), welding
Power supply major loop (2), central processing unit (3), voltage x current control circuit (4) and cold water circulating system (5), it is characterised in that
The major loop breaker (1) is connected with welding power source main loop (2), welding power source main loop (2) connection cold water circulating system
(5)；Central processing unit (3) controls welding power source main loop (2), welding power source main loop by voltage x current control circuit (4)
(2) communicated with central processing unit (3)；Central processing unit (3) controls major loop breaker (1) and cold water circulating system (5) respectively,
Wherein, the central processing unit (3) includes fault self-diagnosis system, can gather welding major loop (2) and circulating chilled water
The voltage of system (5), electric current, temperature, flow, conductivity data.
2. flash welding machine for fixed steel rail according to claim 1 high power DC welding power source system, its feature exist
In the welding power source main loop (2) includes Current Voltage sensor (21), pressure regulation IGCT combination (22), welding transformer
Combine (23) and diode rectification composite module (24).
3. flash welding machine for fixed steel rail according to claim 2 high power DC welding power source system, its feature exist
In the Current Voltage sensor (21) includes the first welding transformer (231), the second welding transformer (232) and the 3rd
Welding transformer (233), wherein, the first welding transformer (231) is respectively communicated with the first current sensor (211), first voltage
Sensor (212) and the first pressure regulation IGCT (221)；Second welding transformer (232) is respectively communicated with the second current sensor
(213), second voltage sensor (214) and the second pressure regulation IGCT (222)；3rd welding transformer (233) is respectively communicated with
Three current sensors (215), tertiary voltage sensor (216) and the 3rd pressure regulation IGCT (223).
4. flash welding machine for fixed steel rail according to claim 3 high power DC welding power source system, its feature exist
In the pressure regulation IGCT is combined in (22), corresponding each IGCT, the first temperature sensor (224) is installed on IGCT.
5. flash welding machine for fixed steel rail according to claim 3 high power DC welding power source system, its feature exist
In in the diode rectification composite module (24), correspondingly each commutation diode, installs second temperature sensing on the diode
Device (241).
6. flash welding machine for fixed steel rail according to claim 3 high power DC welding power source system, its feature exist
In, in the welding transformer combination (23), corresponding first welding transformer (231), the second welding transformer (232) and the 3rd
Welding transformer (233) sets the first primary coil combination (234), the second primary coil combination (235) and the 3rd primary respectively
Coil combination (236)；First primary coil combination (234), the second primary coil combination (235) and the combination of the 3rd primary coil
(236) three-temperature sensor (237) is installed respectively on.
7. the flash welding machine for fixed steel rail high power DC welding power source system according to claim 4,5 or 6, it is special
Sign is, the quantity of first temperature sensor (224), second temperature sensor (241) and three-temperature sensor (237)
To be multiple.
8. flash welding machine for fixed steel rail according to claim 1 high power DC welding power source system, its feature exist
In in the welding power source main loop (2), each component has Water-cooling circulating part, and low-temperature cooling water is provided by cooling-water machine (51)
And circulation power, each component respectively install cooling water flow sensor (52) and differential pressure pickup (53).
9. flash welding machine for fixed steel rail according to claim 1 high power DC welding power source system, its feature exist
In the fault self-diagnosis system is calculated according to the voltage of acquisition, electric current, temperature, flow, conductivity data, is
System fault characteristic information simultaneously searches matching failure diagnosis information from Fault Diagnosis Database,
Wherein, according to collection welding major loop (2) and voltage, electric current, temperature, flow, the electrical conductivity number of cold water circulating system (5)
Establishing expression formula according to the fault message under all situations is：
A. the first welding transformer (231), the second welding transformer (232) and the 3rd welding transformer (233) collected
Voltage is respectively V1, V2, V3, when voltage meets following whole expression formulas, is considered as power supply normal work, otherwise fault self-diagnosis
System will be prompted to electric voltage exception：
(V1+V2+V3)/3-10<V1<(V1+V2+V3)/3+10
(V1+V2+V3)/3-10<V2<(V1+V2+V3)/3+10
(V1+V2+V3)/3-10<V3<(V1+V2+V3)/3+10
When meeting following any one group of expression formula, fault self-diagnosis sends signal, the source of welding current is stopped：
(V1+V2+V3)/3-20>V1、(V1+V2+V3)/3+20<V1
(V1+V2+V3)/3-20>V1、(V1+V2+V3)/3+20<V1
(V1+V2+V3)/3-20>V1、(V1+V2+V3)/3+20<V1
B. electric current I1, I2, I3 of each welding transformer are measured, when electric current meets following whole expression formulas, is being considered as power supply just
Often work, otherwise fault self-diagnosis system will be prompted to electric voltage exception：
(I1+I2+I3)/3-10<I1<(I1+I2+I3)/3+10
(I1+I2+I3)/3-10<I2<(I1+I2+I3)/3+10
(I1+I2+I3)/3-10<I3<(I1+I2+I3)/3+10
When meeting following any one group of expression formula, fault self-diagnosis sends signal, the source of welding current is stopped：
(I1+I2+I3)/3-20>I1、(I1+I2+I3)/3+20<I1
(I1+I2+I3)/3-20>I2、(I1+I2+I3)/3+20<I2
(I1+I2+I3)/3-20>I3、(I1+I2+I3)/3+20<I3
C. the first temperature sensor (224), second temperature sensor (241) and three-temperature sensor (237) measure single portion
The temperature value T of part, when the temperature value T of single part is more than same item temperature averages Ta more than 3 DEG C or more than temperature alarming
During the upper limit during Tm, fault self-diagnosis system sends heat alarm；As single part temperature exceedes same item temperature-averaging
Ta10 DEG C of value or during more than temperature upper absolute limit Tmax, fault self-diagnosis system sends signal, stops power work；
D. flow sensor (52) is installed respectively in 3 duplexures of cold water circulating system (5), measures cooling water flow difference
For Q1, Q2, Q3, when flow meets following whole expression formulas, it is considered as power supply normal work, otherwise fault self-diagnosis system will carry
Show Traffic Anomaly：
Vmin (minimum total flow)<(Q1+Q2+Q3)<Vmax (maximum total flow)
((Q1+Q2+Q3)*0.9)/3<Q1<((Q1+Q2+Q3)*1.1)/3
((Q1+Q2+Q3)*0.9)/3<Q2<((Q1+Q2+Q3)*1.1)/3
((Q1+Q2+Q3)*0.9)/3<Q3<((Q1+Q2+Q3)*1.1)/3
When meeting following any one group of expression formula, fault self-diagnosis sends signal, the source of welding current is stopped：
(Q1+Q2+Q3)*0.8/3>Q1、(Q1+Q2+Q3)*1.2/3<Q1
(Q1+Q2+Q3)*0.8/3>Q2、(Q1+Q2+Q3)*1.2/3<Q2
(Q1+Q2+Q3)*0.8/3>Q3、(Q1+Q2+Q3)*1.2/3<Q3
Vmin*0.9>(Q1+Q2+Q3)、(Q1+Q2+Q3)>Vmax*1.1
E. when cooling water temperature Tw exceedes temperature upper limit Twmax, fault self-diagnosis system sends alarm signal, exceedes
Stop power work during Twmax*1.1；
F. when cooling water conductivity k is more than 100 μ S/cm, fault self-diagnosis system sends alarm signal, more than 200 μ S/cm
When, stop power work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710606280.4A CN107414271B (en) | 2017-07-24 | 2017-07-24 | High-power direct-current welding power supply system for fixed steel rail flash welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710606280.4A CN107414271B (en) | 2017-07-24 | 2017-07-24 | High-power direct-current welding power supply system for fixed steel rail flash welding machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109986189A (en) * | 2019-05-08 | 2019-07-09 | 西南交通大学 | A kind of technique refining flash welding in rail weld grain |
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| CN103990900A (en) * | 2013-02-20 | 2014-08-20 | 高伟 | Spot-weld machine special for anode steel claw |
| CN204504488U (en) * | 2015-02-15 | 2015-07-29 | 广东省工业技术研究院(广州有色金属研究院) | A kind of steel pipe flash butt welding on-line monitoring system |
| KR101689172B1 (en) * | 2016-05-12 | 2016-12-26 | (주)신화웰텍 | A method of estimating welding quality in flash buttwelding process |
| CN206153740U (en) * | 2016-07-15 | 2017-05-10 | 成都闪虎新能源科技有限公司 | Remove flash welding trailer based on ultracapacitor system |
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| CN102971107A (en) * | 2010-05-28 | 2013-03-13 | 铁路发展服务公司 | System and method for flash-welding |
| CN103990900A (en) * | 2013-02-20 | 2014-08-20 | 高伟 | Spot-weld machine special for anode steel claw |
| CN204504488U (en) * | 2015-02-15 | 2015-07-29 | 广东省工业技术研究院(广州有色金属研究院) | A kind of steel pipe flash butt welding on-line monitoring system |
| KR101689172B1 (en) * | 2016-05-12 | 2016-12-26 | (주)신화웰텍 | A method of estimating welding quality in flash buttwelding process |
| CN206153740U (en) * | 2016-07-15 | 2017-05-10 | 成都闪虎新能源科技有限公司 | Remove flash welding trailer based on ultracapacitor system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109986189A (en) * | 2019-05-08 | 2019-07-09 | 西南交通大学 | A kind of technique refining flash welding in rail weld grain |
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