CN105489349A - Cooling monitoring device of transformer cooling device used for electrowelding transformer - Google Patents
Cooling monitoring device of transformer cooling device used for electrowelding transformer Download PDFInfo
- Publication number
- CN105489349A CN105489349A CN201510638369.XA CN201510638369A CN105489349A CN 105489349 A CN105489349 A CN 105489349A CN 201510638369 A CN201510638369 A CN 201510638369A CN 105489349 A CN105489349 A CN 105489349A
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- China
- Prior art keywords
- cooling
- transformer
- dog
- watch
- activation signal
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/406—Temperature sensor or protection
Abstract
The invention relates to a cooling monitoring device of a transformer cooling device (4) used for an electrowelding transformer(6). The cooling monitoring device has a monitoring device (8) for monitoring at least one operation parameter of the transformer cooling device (4), wherein the parameter represents the cooling effect of the transformer cooling device (4), and an activation device (10) for activating the electrowelding transformer (6), wherein the monitoring device (8) is constructed and is used for transmitting the activated signal (AS) to the activation device (10) according to the parameter representing the cooling effect of the transformer, and the activation device (10) is constructed for activating the electrowelding transformer (6) according to the reception of the activation signal (AS).
Description
Technical field
The present invention relates to the cooling watch-dog for the transformer cooling device of welding transformer and the welding transformer with such cooling watch-dog.
Background technology
In welding, such as resistance welded, can use as the welding transformer (Schwei transformator) required when welding, the alternating current of the energy source with high voltage and low current intensity is converted to the alternating current with low-voltage and high current intensity by it.
In order to ensure to run welding transformer by regulation during welding process, such as, according to DE1020070010234A1, described welding transformer can be cooled.For this reason, can transformer cooling device be set, utilizes described transformer cooling device can by coolant feed to welding transformer, to cool described welding transformer.
In order to the temperature at run duration monitoring welding transformer, the temperature sensor of the operating temperature for measuring welding transformer can be set.But, so described welding transformer also can be put into when not cooling operation and welding process be performed.In the case, described welding transformer may be overheated, and this reduces the life-span of welding transformer significantly.
Therefore it is desirable that, it is overheated operationally to get rid of in welding transformer situation.
Summary of the invention
There is the cooling watch-dog of the transformer cooling device for welding transformer of the feature of independent claims according to the present invention's proposition and there is the welding transformer of such cooling watch-dog.Favourable expansion scheme is the theme of dependent claims and description subsequently.
Cooling watch-dog for the transformer cooling device of welding transformer have for monitor the cooling effect that represents transformer cooling device, the supervising device of at least one operational factor of transformer cooling device and the active device for activating welding transformer.Described supervising device is set up or is configured to, and activation signal is transferred to active device by least one operational factor detected according to transformer cooling device.Described active device is set up or is configured to, and the reception according to activation signal activates welding transformer.Utilize the operational factor representing cooling effect, the function of transformer cooling device is detected, and makes the explanation of described operational factor is worked or Puiescent, inoperative transformer cooling device.Therefore guarantee, only have the enough coolings when welding transformer to be guaranteed, described welding transformer just can be put into operation, and described cooling is in operation and reliably prevents the overheated of welding transformer.
The present invention is not only suitable for the welding transformer of traditional AC transformer form, and is particularly suitable for intermediate frequency transformer.Intermediate frequency transformer is at the so-called intermediate frequency of hundreds of Hz to a few kHz() scope in the transformer designed by frequency.Intermediate frequency transformer distinguishes typically via less iron core and the common power transformer utilizing the mains frequency of the 50Hz common in Europe to run.
Intermediate frequency transformer is especially favourable as being used for the welding transformer of pliers spot welding machine, because thick inflexibility lead-in wire (needing a few kiloampere) can be avoided thus, and thus pincers (the robot place such as in automobile making) can be remained light and moveable.
According to a kind of execution mode, described cooling watch-dog is configured to, and activates described welding transformer according to the activation signal with level logic 1, and according to having the activation signal deexcitation welding transformer of level logic zero.
According to another execution mode, described supervising device have for measure as operational factor by the duct segments of the guiding cooling agent of transformer cooling device the flow sensor of coolant flow, and described cooling watch-dog is configured to, according to detecting that activation signal is transferred to active device by the minimum discharge amount exceeded for amount of coolant.Therefore by measuring the flow of cooling agent, detect the amount of coolant being actually delivered to welding transformer, and with run duration for welding transformer reliable cooling required for minimum discharge amount (Mindestdurchflussmenge) compare.
According to another execution mode, described transformer cooling device has for by the actuator of coolant feed to welding transformer, and described supervising device is configured to, and described activation signal is transferred to active device by the operation detected according to actuator.Therefore detect, whether actuator (such as cooling medium pump) is in operation and practically by coolant feed to welding transformer.
According to another execution mode, described supervising device has for the level sensor as the cooling agent material level of operational factor monitoring in transformer cooling device, and described supervising device is configured to, according to the minimum transportation load exceeded for amount of coolant being detected, activation signal is transferred to active device.Therefore guarantee to only have when described transformer cooling device has enough cooling agents by detecting amount of coolant and comparing with minimum transportation load, so that when welding transformer run duration reliably cools, the operation of welding transformer is only possible.
According to another execution mode, described supervising device has the coolant temperature sensor of the coolant temperature for measuring cooling agent as operational factor, and described supervising device is configured to, lower than temperature upper limit, activation signal is transferred to active device according to detecting.Therefore guarantee by measuring coolant temperature and comparing with temperature upper limit, only have when described cooling agent has coolant temperature under the maximum temperature being such as in welding transformer, when making to utilize the cooling of cooling agent to welding transformer to be possible, the operation of welding transformer is only possible.
According to another execution mode, described supervising device additionally has the transformer temperature sensor of the operating temperature for measuring welding transformer, and described supervising device is configured to, according to detecting lower than temperature upper limit, activation signal is transferred to active device.Therefore guarantee by measuring operating temperature and comparing with temperature upper limit, when only having under the temperature that operating temperature is in the infringement that will cause welding transformer, the operation of welding transformer is only possible.
According to another execution mode, described cooling watch-dog has and circuit, describedly provide activation signal with circuit as output signal, and at least two operational factors detected especially with level logic 1 or logical zero can be fed to described and circuit as input signal.Therefore, only have when the condition required for all enough coolings for welding transformer is satisfied, such as selectively operational factor exist there is the signal of level logic 1 time, the operation of welding transformer is only possible.
According to another execution mode, described cooling watch-dog is configured to, at least one operational factor of inspection transformer cooling device before welding transformer puts (Inbetriebnahme) into operation.By checking at least one operational factor of transformer cooling device to guarantee before putting into operation, operating in when there is no enough coolings and first may not.Therefore, in internal inspection step, the Functional Capability of transformer cooling device is first tested.Only have when described internal inspection step successfully terminates, also namely transformer cooling device be can operate time, make described welding transformer put into operation in a further step.
Other advantages of the present invention and expansion scheme draw with accompanying drawing by describing.
Accessible, above-mentioned that mention and the following feature still will set forth with the combination provided respectively and with other combinations or can not only be used individually, and does not depart from the scope of the present invention.
The present invention schematically shows in the accompanying drawings according to embodiment, and is at large described below with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 illustrates the welding transformer with cooling watch-dog with schematic diagram.
Embodiment
Fig. 1 illustrates welding transformer 6, and it is configured to the AC transformer applied when resistance welded or intermediate frequency transformer.
The alternating current with high input voltage Uin and low current intensity I in is converted to the alternating current with low-voltage Uout and high current intensity Iout by described welding transformer 6.Described alternating current be usually rectified and in be used to welding.
In order to cool welding transformer 6, transformer cooling device 4 is set.Described transformer cooling device 4 has coolant circuit, in described coolant circuit, liquid cooling agent can be recycled in the operation of welding transformer 6 by means of the circulating pump of actuator 12, in the present embodiment motor running, so that thus cooling welding transformer 6.In order to make the coolant cools of circulation, transformer cooling device 4 can have heat exchanger (not shown).
In order to monitor the function of the transformer cooling device 4 of welding transformer 6, cooling watch-dog 2 is set.Described cooling watch-dog 2 has the supervising device 8 of the operational factor for monitoring transformer cooling device 4 and the active device 10 for activating welding transformer 6.
Described supervising device 8 operational factor had in the present embodiment for the representatively transformer cooling device of the cooling effect of transformer cooling device measures the flow sensor 14 by the coolant flow of the duct segments of the guiding cooling agent of transformer cooling device 4, preferably also there is level sensor 16 for monitoring the cooling agent material level in transformer cooling device 4 and the coolant temperature sensor 18 for measuring the coolant temperature of cooling agent respectively as the operational factor of transformer cooling device of the cooling effect representing transformer cooling device, and for the transformer temperature sensor 20 of the operating temperature of measuring welding transformer 6.Namely in addition described supervising device 8 is preferably configured to the operation monitoring of actuator (Aktor) 12, and also whether described actuator 12 is in operation and circulating coolant.Another operational factor of the cooling effect of the representative transformer cooling device of the result indication transformer cooling device of this monitoring.
At this, flow sensor 14 is understood to measure the transducer by the flow of the cooling agent of the pipe segmentation of transformer cooling device 4.The measurement of flow can based on acoustics, gyro, magnetic induction, (mechanisch-volumetrisch) of mechanical volume, optics, calorifics or differential pressure type/booster-type method (Wirkdruck-/Stauverfahren).And level sensor 16 is understood to lower sensor: utilize described transducer such as to measure the material level of cooling agent in reservoir vessel.The measurement of material level can mechanically by means of conductivity measurement, by means of measurement by capacitance, carry out by means of optical measurement or by means of electromagnetic wave, as microwave or radar wave.The duct segments thermal coupling of the guiding cooling agent of described coolant temperature sensor 18 and transformer cooling device, and described transformer temperature sensor 20 and welding transformer 6 thermal coupling.
In addition, described supervising device 8 has assessment unit 22.Described assessment unit 22 has the first comparing unit 24a, it is configured to, and is compared by the measured value of the representatively flow sensor 14 of the operational factor of the transformer cooling device of the cooling effect of transformer cooling device with the minimum discharge amount for amount of coolant.If described measured value exceedes minimum discharge amount, also namely enough cooling agents are recycled, then described first comparing unit 24a provides signal logic 1.
Second comparing unit 24b of assessment unit 22 is configured to, and is compared by the measured value of the representatively level sensor 16 of the operational factor of the transformer cooling device of the cooling effect of transformer cooling device with the minimum transportation load for amount of coolant.If this measured value exceedes minimum runtime value, also namely there is enough cooling agents, then described second comparing unit 24b provides signal logic 1.
3rd comparing unit 24c of assessment unit 22 is configured to, and is compared by the measured value of the representatively coolant temperature sensor 18 of the operational factor of the transformer cooling device of the cooling effect of transformer cooling device with the temperature upper limit for cooling agent.Namely if this measured value is lower than temperature upper limit, also described cooling agent is colder than temperature upper limit, then described 3rd comparing unit 24c provides signal logic 1.
4th comparing unit 24d of assessment unit 22 is configured to, and is compared by the temperature upper limit of the measured value of transformer temperature sensor 20 with the operating temperature for welding transformer 6.Namely if described measured value is lower than temperature upper limit, also described operating temperature is less than temperature upper limit, then the 4th comparing unit 24d provides signal logic 1.
In addition, if described actuator 12 is in operation, then the operational factor of the described actuator 12 representatively transformer cooling device 4 of the cooling effect of transformer cooling device provides signal logic 1.
In addition, described assessment unit 22 has and (UND) circuit 26, and wherein above-mentioned logical signal is fed to described and circuit.If all signals are all logical ones, then assessment unit provide activation signal AS with circuit 26.Therefore activation signal AS vicious providing due to the interruption of the Signal transmissions of one of logical signal and be excluded.
Described activation signal AS is fed to active device 10.
Described active device 10 has controllable semiconductor switch in the present embodiment, and as such as MOSFET or thyristor, described semiconductor switch interrupts the feed with input current Iin under that disconnect, not controlled state.Alternately, described active device 10 can also be configured to, interrupt output electric current I out under not controlled state.Described controllable semiconductor switch is constructed to that oneself disconnects in the present embodiment or from what end, also namely when activation signal AS does not exist, described controllable semiconductor switch remains in the state of disconnection.Therefore vicious release, the also interruption namely activated due to the Signal transmissions of activation signal AS of welding transformer 6 are excluded.In other words, described active device 10 and therefore described cooling watch-dog 2 construct according to quiescent current principle place of working.
When being put into operation by welding transformer 6, in internal inspection step, first check the Functional Capability of transformer cooling device 4.Be put into actuator described in this 12 and run and inspection, whether actuator 12 is in operation, and the minimum discharge amount of cooling agent is transferred, and whether the minimum transportation load of amount of coolant exists, and whether coolant temperature and operating temperature be under temperature upper limit.If these conditions are all satisfied, then provide described activation signal AS in a further step, active device 10 activates by described activation signal AS, also namely causes controllable semiconductor switch to close.So described input current Iin just flows in welding transformer 6.
Therefore putting into operation of welding transformer 6 is only possible when transformer cooling device 4 works.
Claims (10)
1. for being especially constructed to the cooling watch-dog (2) of the transformer cooling device (4) of the welding transformer (6) of AC transformer or intermediate frequency transformer, have and represent the cooling effect of transformer cooling device (4) for monitoring, the supervising device (8) of at least one operational factor of transformer cooling device (4), with the active device had for activating welding transformer (6) (10), wherein said supervising device (8) is configured to, according to the cooling effect representing transformer cooling device, activation signal (AS) is transferred to active device (10) by least one operational factor detected of transformer cooling device, and wherein said active device (10) is configured to, described welding transformer (6) is activated according to the reception of described activation signal (AS).
2. cooling watch-dog (2) according to claim 1, wherein said supervising device (8) operational factor had for the representatively cooling effect of transformer cooling device (4) measures the flow sensor (14) by the coolant flow of the duct segments of the guiding cooling agent of transformer cooling device (4), and described cooling watch-dog (2) is configured to, according to the minimum discharge amount exceeded for amount of coolant being detected, described activation signal (AS) is transferred to active device (10).
3. cooling watch-dog (2) according to claim 1 and 2, wherein said transformer cooling device (4) has for by the actuator (12) of coolant feed to welding transformer (6), and described supervising device (8) is configured to, according to the operation detected of actuator (12), representatively described activation signal (AS) is transferred to active device (10) by the operational factor of the cooling effect of transformer cooling device.
4. according to the cooling watch-dog (2) one of the claims Suo Shu, wherein said supervising device (8) has the level sensor (16) for the cooling agent material level in operational factor monitoring transformer cooling device (4) of the representatively cooling effect of transformer cooling device, and described supervising device (8) is constructed for, according to the minimum transportation load exceeded for amount of coolant being detected, described activation signal (AS) is transferred to active device (10).
5. according to the cooling watch-dog (2) one of the claims Suo Shu, wherein said supervising device (8) operational factor had for the representatively cooling effect of transformer cooling device measures the coolant temperature sensor (18) of the coolant temperature of cooling agent, and wherein said supervising device (8) is configured to, according to detecting lower than temperature upper limit, described activation signal (AS) is transferred to active device (10).
6. according to the cooling watch-dog (2) one of the claims Suo Shu, wherein said supervising device (8) additionally has the transformer temperature sensor (20) of the temperature for measuring welding transformer (6), and wherein said supervising device (8) is configured to, according to detecting lower than temperature upper limit, described activation signal (AS) is transferred to active device (10).
7. according to the cooling watch-dog (2) one of the claims Suo Shu, wherein said cooling watch-dog (2) is configured to, activation signal (AS) according to having level logic 1 activates welding transformer (6), and according to having activation signal (AS) deexcitation welding transformer (6) of level logic zero.
8. according to the cooling watch-dog (2) one of the claims Suo Shu, wherein said cooling watch-dog (2) has and circuit (26), describedly provides activation signal (AS) as output signal with circuit (26) and at least two operational factors detected with level logic 1 or logical zero can be fed to described and circuit as input signal.
9., according to the cooling watch-dog (2) one of the claims Suo Shu, wherein said cooling watch-dog (2) is configured to, before welding transformer (6) puts into operation, and at least one operational factor of inspection transformer cooling device (4).
10. welding transformer (6), has transformer cooling device (4), and coolant feed to welding transformer (6), and to have according to the cooling watch-dog (2) one of the claims Suo Shu by described transformer cooling device (4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014220145.4A DE102014220145A1 (en) | 2014-10-06 | 2014-10-06 | Cooling monitoring device for a transformer cooling a welding transformer |
| DE102014220145.4 | 2014-10-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105489349A true CN105489349A (en) | 2016-04-13 |
Family
ID=55531133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510638369.XA Pending CN105489349A (en) | 2014-10-06 | 2015-09-30 | Cooling monitoring device of transformer cooling device used for electrowelding transformer |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105489349A (en) |
| DE (1) | DE102014220145A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111354554B (en) * | 2018-12-20 | 2023-12-22 | 株式会社岛津制作所 | Graphite furnace and transformer used in graphite furnace |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61172312A (en) * | 1985-01-28 | 1986-08-04 | Toshiba Corp | Transformer controlling device for combined cycle power plant |
| CN101081595A (en) * | 2006-05-30 | 2007-12-05 | 比亚迪股份有限公司 | Electric motor car cooling system and the control method thereof |
| CN202815464U (en) * | 2012-09-13 | 2013-03-20 | 西安立泰电气自动化有限公司 | Comprehensive intelligent control system for cooling transformer |
| CN102984928A (en) * | 2012-12-31 | 2013-03-20 | 西安飞豹科技发展公司 | Airborne small-scale liquid cooling device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3006854C2 (en) * | 1980-02-23 | 1983-09-15 | Rainer Ing.(grad.) 4650 Gelsenkirchen Sanden | Cooling system with monitoring arrangement for the transformer cooling of a power plant machine transformer |
| AT378623B (en) * | 1982-11-15 | 1985-09-10 | Elin Union Ag | DEVICE FOR THE THERMAL MONITORING OF LIQUID-COOLED TRANSFORMERS AND THROTTLE COILS |
| DE29924221U1 (en) * | 1998-10-07 | 2002-08-01 | Nieke Elektroapp Gmbh Berlin | Transformer arrangement with cooling circuit |
| DE19847267A1 (en) * | 1998-10-07 | 2000-04-13 | Nieke Elektroapparate Gmbh | Transformer arrangement with cooling circuit |
| US6446027B1 (en) * | 1999-09-17 | 2002-09-03 | General Electric Company | Intelligent analysis system and method for fluid-filled electrical equipment |
| KR100859832B1 (en) | 2006-09-21 | 2008-09-23 | 주식회사 하이닉스반도체 | Inner voltage monitoring device in semiconductor memory device and method for monitoring the same |
| AT512064B1 (en) * | 2011-10-31 | 2015-11-15 | Fronius Int Gmbh | HIGH-FLOW TRANSFORMER, TRANSFORMER ELEMENT, CONTACT PLATE AND SECONDARY WINDING, AND METHOD FOR PRODUCING SUCH A HIGH-SPEED TRANSFORMER |
-
2014
- 2014-10-06 DE DE102014220145.4A patent/DE102014220145A1/en not_active Withdrawn
-
2015
- 2015-09-30 CN CN201510638369.XA patent/CN105489349A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61172312A (en) * | 1985-01-28 | 1986-08-04 | Toshiba Corp | Transformer controlling device for combined cycle power plant |
| CN101081595A (en) * | 2006-05-30 | 2007-12-05 | 比亚迪股份有限公司 | Electric motor car cooling system and the control method thereof |
| CN202815464U (en) * | 2012-09-13 | 2013-03-20 | 西安立泰电气自动化有限公司 | Comprehensive intelligent control system for cooling transformer |
| CN102984928A (en) * | 2012-12-31 | 2013-03-20 | 西安飞豹科技发展公司 | Airborne small-scale liquid cooling device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102014220145A1 (en) | 2016-04-07 |
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Application publication date: 20160413 |