CN1624203A - Mobile grounding monitoring device and method of electrolytic tank series bus - Google Patents
Mobile grounding monitoring device and method of electrolytic tank series bus Download PDFInfo
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- CN1624203A CN1624203A CN 200410050677 CN200410050677A CN1624203A CN 1624203 A CN1624203 A CN 1624203A CN 200410050677 CN200410050677 CN 200410050677 CN 200410050677 A CN200410050677 A CN 200410050677A CN 1624203 A CN1624203 A CN 1624203A
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- grounding
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- 238000000034 method Methods 0.000 title claims description 23
- 238000012806 monitoring device Methods 0.000 title claims description 15
- 238000012544 monitoring process Methods 0.000 claims abstract description 29
- 238000012423 maintenance Methods 0.000 claims description 33
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
A movable grounding monitor device for the DC bus of aluminium electrolyzing bath in order to maintain it with high safety is composed of a grounding circuit, a monitor circuit for monitoring the grounding condition for connecting the DC bus of electrolyzer to ground or automatically cutting off the grounding circuit while driving alarm unit, and an alarm unit for generating sound and light alarm signals.
Description
Affiliated technical field
The present invention relates to a kind of electrolytic aluminium factory pot line dc bus and move ground connection monitoring device and method, is a kind of security measures that adopts when overhauling electrolyzer.
Background technology
Used for aluminium electrolysis electrolyzer direct-flow electricity utilization apparatus is a stage load, to its interruption maintenance, subtract electric ratio and the time related specifications all has certain requirement, the series electrolyzer need overhaul when withdrawing from, current way is by regulating the commutation supply voltage regulator, potline current is reduced to zero or cut off serial power supply, after the electrolyzer of required maintenance withdrawed from, recover the series power supply again, the electrolyzer of need maintenance is carried out on the spot or concentrated overhaul.
Because the characteristics that the direct current series electrolyzer is installed, its insulation against ground is difficult for being in high level, running down of insulation situation in service in addition, and cause its insulation resistance over the ground to reduce, if certain electrolyzer had existed ND insulation against ground to worsen before maintenance or other electrolyzer insulation breakdown formation touch down point over the ground in maintenance process in the electrolytic series, and this moment, maintainer or equipment metal part touched zero potential accidentally, the direct current stray current that just has the hundreds of peace flows through the person or instrument, the intensive direct current arc takes place, and the person and equipment are caused huge harm.
Summary of the invention
Technical problem to be solved by this invention provides a kind of mobile ground connection monitoring device of potline dc bus, it can be according to the difference of maintenance electrolyzer touch down point and mobile ground connection, before maintenance and in the maintenance process, the insulation against ground situation of electrolytic series is monitored, in time find touch down point, thereby guarantee the safety of maintainer and equipment.
In order to solve the problems of the technologies described above the mobile ground connection monitoring device that the present invention is achieved in that a kind of pot line bus, it is made of following part: grounding circuit is used for ground connection; Observation circuit, being used for reaching before maintenance maintenance process monitors grounding requirement, when monitoring result satisfies grounding requirement, need are overhauled the serial dc bus ground connection at electrolyzer place, when the enabled condition of monitoring result ground connection is destroyed, grounding circuit cuts off automatically, and this signal is transferred to warning circuit; Warning circuit is used to receive the signal of observation circuit, output sound and light alarm signal, and with on the signal locker of guard signal teletransmission to the operating surface.
The mobile ground connection monitoring device of described pot line bus also comprises distant place PLC Monitoring systems, is used for the working order and the monitor value of observation circuit are gathered in real time, realizes the centralized management of monitoring data.
Described grounding circuit, observation circuit, warning circuit are arranged in the casing and are installed on the transportable dolly.
A kind of mobile ground connection monitoring method of pot line bus, it comprises the following stage: before electrolyzer maintenance, will overhaul the serial dc bus ground connection at electrolyzer place by observation circuit, the stage that grounding requirement is monitored; When the result of monitoring satisfies grounding requirement, with dc bus ground connection, artificial ground's point is set promptly by grounding circuit, then the stage that the electrolyzer that needs maintenance after withdrawing from is overhauled; Observation circuit continues grounding requirement is monitored in maintenance process, and when ground connection enabled condition was destroyed, the direct current stray current by grounding circuit surpassed set(ting)value, and grounding circuit cuts off automatically, and this signal is transferred to the stage of warning circuit; Warning circuit receives output sound and light alarm signal behind the signal of observation circuit output, and with stage of the signal locker of guard signal teletransmission to the operating surface; After electrolyzer maintenance finishes, series of busbars and artificial ground are put the stage of disconnection.
Above-mentioned in the electrolyzer maintenance process, the stage that observation circuit continues grounding requirement is monitored also comprises when ground connection enabled condition is destroyed, direct current stray current by grounding circuit surpasses set(ting)value, and observation circuit is given the distant place PLC Monitoring systems stage with this information transmission.
Above-mentioned before the electrolyzer maintenance, the stage of the grounding requirement at the electrolyzer place of need maintenance being monitored by observation circuit is: when definite certain electrolyzer need overhaul, confirm that grounding circuit, observation circuit and warning circuit are in normal operating conditions, grounding circuit, observation circuit and warning circuit are moved to this electrolyzer place, by the dc bus ground connection of observation circuit with this place, electrolyzer place, grounding requirement is monitored, both the observation circuit magnitude of voltage was monitored, and monitor value and permissible value were compared.
Advantage of the present invention is as follows with effect: can move the ground connection monitoring device according to the different and mobile the present invention in maintenance electrolyzer place after adopting the present invention, before the electrolyzer maintenance, judge that according to its monitoring result can the artificial ground is set puts and overhaul electrolyzer, after being set, artificial ground's point make this place's electrolyzer current potential reduce to zero, be convenient to safety inspection, when ground connection enabled condition is destroyed in the maintenance process, this device can automatically terminate artificial ground's point, the concurrent visual alarm of speaking is notified the maintainer, service work will be under an embargo, thereby guarantee the safety of maintainer and equipment.
Below in conjunction with the drawings and specific embodiments the present invention is further elaborated.
Description of drawings
Fig. 1 is the structured flowchart of the mobile ground connection monitoring device of pot line bus of the present invention;
Fig. 2 is the schema of the mobile ground connection monitoring method of pot line bus of the present invention.
Among the figure, 1. grounding circuit, 2. observation circuit, 3. warning circuit, 4. signal locker, 5. distant place PLC Monitoring systems, 6. power supply unit.
Embodiment
Fig. 1 is the structured flowchart of the mobile ground connection monitoring device of pot line bus of the present invention.It is made of following part: grounding circuit 1 is used for ground connection; Observation circuit 2, being used for reaching before maintenance maintenance process monitors grounding requirement, when monitoring result satisfies grounding requirement, need are overhauled the busbar grounding at electrolyzer place, when the enabled condition of monitoring result ground connection is destroyed, grounding circuit cuts off automatically, and this signal is transferred to warning circuit 3; Warning circuit 3 is used to receive the signal of observation circuit, and the output sound and light alarm, simultaneously with the signal locker 4 of guard signal teletransmission to the operating surface; Power supply unit 6 is used to observation circuit, warning circuit that power supply is provided.
The mobile ground connection monitoring device of described pot line bus also comprises distant place PLC Monitoring systems 5, is used for the working order and the monitor value of observation circuit are gathered in real time, realizes the centralized management of monitoring data.
Described grounding circuit 1, observation circuit 2, warning circuit 3 are arranged in the casing and are installed on the transportable dolly.
Fig. 2 is the schema of the mobile ground connection monitoring method of pot line bus of the present invention.Below in conjunction with accompanying drawing course of action of the present invention is described in further details.
When definite certain electrolyzer need overhaul, confirm that the present invention moves the ground connection monitoring device and is in normal operating conditions, promptly carry out self check after, mobile ground connection monitoring device is moved to this electrolyzer place.
By the dc bus ground connection of observation circuit of the present invention with this place, electrolyzer place, grounding requirement is monitored, both the magnitude of voltage of observation circuit was monitored, and the permissible value of monitor value with itself compared by observation circuit.This permissible value is 2V.
If monitor value is lower than permissible value, then observation circuit judges that the electrolytic series insulation against ground is good, no touch down point, and both grounding requirement satisfied artificial ground's requirement, allow to be provided with artificial ground's point, can connect grounding circuit this moment, makes dc bus through grounding circuit ground connection, and setting completed for artificial ground's point, so far, can carry out service work to electrolyzer, after the electrolyzer service work finishes, manually remove artificial ground's point.
If monitor value is higher than permissible value, then observation circuit judges that the electrolytic series insulation against ground destroys, touch down point is arranged, both grounding requirement can not satisfy grounding requirement, forbade being provided with artificial ground's point, and give warning circuit by observation circuit with this information transmission this moment, warning circuit receives behind the signal of observation circuit output output sound and light alarm number, and with the signal locker of guard signal teletransmission to the operating surface, the staff of notice two places, the electrolyzer service work will be under an embargo.
In the electrolyzer maintenance process, observation circuit is monitored the ground connection situation continued of electrolytic series, both the electrolytic series direct current stray current that flows through grounding circuit is monitored, and by observation circuit the set(ting)value of monitor value with itself is compared.This set(ting)value is 100A.
If monitor value is lower than set(ting)value, judge that then the electrolytic series insulation against ground belongs to normal range, the electrolyzer service work can be proceeded.
If monitor value is higher than set(ting)value, then observation circuit judges that the electrolytic series insulation against ground destroys, other touch down point had both been arranged in the electrolytic series, this moment, grounding circuit cut off automatically, removed artificial ground's point, and warning circuit sends the sound and light alarm signal simultaneously, and with on the signal locker of guard signal teletransmission to the operating surface, the staff of notice two places stops the service work of electrolyzer, to guarantee its personnel safety.
In the electrolyzer maintenance process, if any part of the present invention breaks down, then warning circuit can send the sound and light alarm signal, and with on the signal locker of guard signal teletransmission to the operating surface, the staff of notice two places stops the service work of electrolyzer, to guarantee its personnel safety.
Warning circuit is also established a direct current supply unit in addition as standby power supply except that the power supply of works better power supply, can automatically switch between the two, if working power fault, then standby power supply drops into automatically, the concurrent visual alarm of speaking, thus guarantee the warning circuit reliable operation.
Warning circuit can monitor the working condition of observation circuit and the power supply of itself, and following situation is carried out sound and light alarm:
1) observation circuit fault;
2) the monitoring voltage value is higher than permissible value;
3) direct current stray current value is higher than set(ting)value;
4) warning circuit works better power failure;
When sending the sound and light alarm signal with on the signal locker of guard signal teletransmission to the operating surface.
The working power of all circuit is all supplied with after isolating transformer is isolated, and can guarantee that zero potential is not introduced into potroom.
The working order of observation circuit and monitor value can be gathered constantly by PLC, realize the centralized management of monitoring data.
Claims (8)
1. the mobile ground connection monitoring device of a pot line bus, it is characterized in that it is made of following part: grounding circuit is used for ground connection; Observation circuit, be used for electrolyzer before maintenance and maintenance process grounding requirement is monitored, when monitoring result satisfies grounding requirement, with series of busbars ground connection, when the enabled condition of monitoring result ground connection was destroyed, grounding circuit cut off automatically, and this signal is transferred to warning circuit; Warning circuit is used to receive the signal of observation circuit, output sound and light alarm signal, and with on the signal locker of guard signal teletransmission to the operating surface.
2. the mobile ground connection monitoring device of a kind of pot line bus according to claim 1, it is characterized in that described grounding circuit, observation circuit, warning circuit be arranged in the casing and be installed in can travelling car on.
3. the mobile ground connection monitoring device of a kind of pot line bus according to claim 1, it is characterized in that it also comprises distant place PLC Monitoring systems, be used for the working order and the monitor value of observation circuit are gathered in real time, realize the centralized management of monitoring data.
4. the mobile ground connection monitoring method of a pot line bus, it comprises the following stage: before the electrolyzer maintenance, by observation circuit with dc bus ground connection, the stage that the grounding requirement at the electrolyzer place of need maintenance is monitored; As the result of monitoring when satisfying grounding requirement, will overhaul the serial dc bus ground connection at electrolyzer place by grounding circuit, artificial ground's point both had been set, then the electrolyzer that need after withdrawing from are overhauled stage of overhauling; Observation circuit continues grounding requirement is monitored in maintenance process, and when ground connection enabled condition was destroyed, when the direct current stray current by grounding circuit surpassed set(ting)value, grounding circuit cut off automatically, and this signal is transferred to the stage of warning circuit; Warning circuit receives output sound and light alarm signal behind the signal of supervisory circuit output, and with stage of the signal locker of guard signal teletransmission to the operating surface; After electrolyzer maintenance finishes, serial dc bus and artificial ground are put the stage of disconnection.
5. the mobile ground connection monitoring method of pot line bus according to claim 4, it is characterized in that described in the electrolyzer maintenance process, the stage that observation circuit continues grounding requirement is monitored also comprises when ground connection enabled condition is destroyed, direct current stray current by grounding circuit surpasses set(ting)value, and observation circuit is given this information transmission the stage of distant place PLC Monitoring systems.
6. according to the mobile ground connection monitoring method of claim 4 or 5 described pot line buses, it is characterized in that described set(ting)value is 100A.
7. the mobile ground connection monitoring method of pot line bus according to claim 4, it is characterized in that described before the electrolyzer maintenance, the stage of the grounding requirement at the electrolyzer place of need maintenance being monitored by observation circuit is: when definite certain electrolyzer need overhaul, confirm grounding circuit, observation circuit and warning circuit are in normal operating conditions, with grounding circuit, observation circuit and warning circuit move to this electrolyzer place, by the serial dc bus ground connection of observation circuit with this place, electrolyzer place, grounding requirement is monitored, both the magnitude of voltage of observation circuit was monitored, and monitor value and permissible value were compared.
8. the mobile ground connection monitoring method of pot line bus according to claim 7 is characterized in that described permissible value is 2V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100506772A CN100340702C (en) | 2004-10-26 | 2004-10-26 | Mobile grounding monitoring device and method of electrolytic tank series bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100506772A CN100340702C (en) | 2004-10-26 | 2004-10-26 | Mobile grounding monitoring device and method of electrolytic tank series bus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1624203A true CN1624203A (en) | 2005-06-08 |
| CN100340702C CN100340702C (en) | 2007-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100506772A Expired - Fee Related CN100340702C (en) | 2004-10-26 | 2004-10-26 | Mobile grounding monitoring device and method of electrolytic tank series bus |
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| Country | Link |
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| CN (1) | CN100340702C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1948975B (en) * | 2006-11-14 | 2011-04-06 | 沈阳铝镁设计研究院 | Apparatus and method for testing absolute resistance to ground of electrolytic tank series |
| CN104505688A (en) * | 2014-12-12 | 2015-04-08 | 国家电网公司 | Operation method and device of grounding wire |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3871984A (en) * | 1973-09-17 | 1975-03-18 | Reynolds Metals Co | Transmission of pot line control signals |
| IT1264952B1 (en) * | 1993-07-20 | 1996-10-17 | Permelec Spa Nora | TYPE OF COOKER FOR ELECTROLYZERS CONNECTED IN ELECTRIC SERIES |
| RU2115774C1 (en) * | 1996-04-08 | 1998-07-20 | Красноярский государственный технический университет | Process detecting points of insulation faults |
-
2004
- 2004-10-26 CN CNB2004100506772A patent/CN100340702C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1948975B (en) * | 2006-11-14 | 2011-04-06 | 沈阳铝镁设计研究院 | Apparatus and method for testing absolute resistance to ground of electrolytic tank series |
| CN104505688A (en) * | 2014-12-12 | 2015-04-08 | 国家电网公司 | Operation method and device of grounding wire |
| CN104505688B (en) * | 2014-12-12 | 2017-02-22 | 国家电网公司 | Operation method and device of grounding wire |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100340702C (en) | 2007-10-03 |
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Owner name: SHENYANG ALUMINUM + MAGNESIUM ENGINEERING + RESEAR Free format text: FORMER NAME: SHENYANG ALUMINIUM AND MAGNESIUM DESIGN INST. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 110001 Heping Street, Heping District, Liaoning, Shenyang, No. 184 Patentee after: Shenyang Aluminum & Magnesium Engineering & Research Institute Co., Ltd. Address before: 110001 Heping Street, Heping District, Liaoning, Shenyang, No. 184 Patentee before: Shenyang Aluminium and Magnesium Design Institute |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071003 Termination date: 20201026 |