CN202062058U - Monitoring protection device for overturning heat preserving furnace aluminum liquid level control - Google Patents
Monitoring protection device for overturning heat preserving furnace aluminum liquid level control Download PDFInfo
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- CN202062058U CN202062058U CN2011201720054U CN201120172005U CN202062058U CN 202062058 U CN202062058 U CN 202062058U CN 2011201720054 U CN2011201720054 U CN 2011201720054U CN 201120172005 U CN201120172005 U CN 201120172005U CN 202062058 U CN202062058 U CN 202062058U
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- holding furnace
- liquid level
- probe
- insulation board
- aluminium liquid
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Abstract
The utility model relates to the technical field of aluminum alloy heavy metal processing, in particular to a monitoring protection device for overturning heat preserving furnace aluminum liquid level control. An acousto-optic alarm indicating lamp is arranged on the overturning heat preserving furnace. A flow channel is arranged below an outlet of the overturning heat preserving furnace. Aluminum liquid is arranged inside both the overturning heat preserving furnace and the flow channel. A mechanical protection device is arranged on the right side of the flow channel, and a probe support frame is welded to a vertical fixing support rod of the mechanical protection device. An insulation board is connected with the support frame, two probes are arranged on the insulation board, and a screw rod is welded to a needle rod. A needle point is lower than the opening surface of a flow channel body. The probes and the insulation board are fixedly connected through an upper screw and a lower screw. Thread joints of the two steel needles are connected with two cables at one ends of signal cables. The other ends of the signal cables are connected with a switch power supply connector and connected to a coil of a 24 V middle relay in parallel. The constant open contact of the middle relay is connected to a control cabinet of the heat preserving furnace. The monitoring protection device improves production and enables the equipment to operate more stably.
Description
[technical field]
The utility model patent relates to aluminium alloy heavy metal processing technique field, a kind of specifically monitoring and protecting device of the holding furnace aluminium liquid level control that is used to tumble.
[background technology]
The holding furnace constant control aluminium liquid feeding procedure of tumbling has automatically contained a lot of industrial control technologies in the production process of aluminium alloy heavy metal processing industry, aluminium liquid comes out to enter Rose Box and degasification tank through chute from holding furnace, chew by roll through casting then and carry out continuous casting and rolling, at this aluminium liquid amount of feeding of crossing the supply of range request holding furnace is continous-stable, and this just compares strict requirement to the lifting control of tumbling automatically of holding furnace.
The automatic rollover control system of existing holding furnace is to shine on the aluminium liquid liquid level by infrared ambulator, transmit input signal by the variation that detects liquid level and enter the PLC system, give servo valve by the PLC user program to the aanalogvoltage control signal that the goal-selling liquid level compares output-10V～10V after the PID calculation process then, drive the continuous automatic lifting that the holding furnace lift cylinders is controlled holding furnace again by servo valve, reach ideal control expection production effect.
But automatic control system is not omnipotent after all, such or such unpredictable problem always appears in the long-term production process, especially the casting workshop is in high temperature production constantly, the infrared emission head of infrared range-measurement system appears blocking in the bigger pollution of dust also conference, influences the accuracy of signal; And temperature is very high during roasting chute, and the temperature that is radiated rangefinder is also high, has so not only brought discount the service life to rangefinder, also can make jitter; Be exactly to exempt to occur artificial factor in the production process to run into rangefinder infrared ray or the like and the control signal disorder all may occur and cause holding furnace to be in the automatic state that rises always in addition, thereby cause that aluminium liquid spills appearance from the chute mouth and leaks the aluminium accident, and after each accident appearance, it gently then is direct economic loss, heavy then may lead the damage stove, the control cable all damages, even causes inevitable casualties, is on producing or has all brought enormous economic loss on the equipment.
[summary of the invention]
The purpose of this utility model is exactly the technical deficiency that will solve existing control device, provides a kind of the liquid level extreme position is carried out protective device spacing, that can better protect equipment.
Design a kind of monitoring and protecting device of the holding furnace aluminium liquid level control that is used to tumble for achieving the above object; comprise the holding furnace of tumbling; the holding furnace electrical control cubicles; chute; Machine guarding; the sound and light alarm indicator lamp; 220V Switching Power Supply and 24V auxiliary reclay; it is characterized in that the described holding furnace of tumbling is provided with the sound and light alarm indicator lamp; described alarm lamp is connected on the DO module Q40.5 port of preservation and controlling cabinet by signal cable; tumble the holding furnace right side to the chute that is provided with stairstepping below the outlet of aluminium liquid; during work; tumbling all has aluminium liquid in holding furnace and the chute; chute the right is provided with mechanical monitoring and protecting device; vertical fixedly pole top at Machine guarding is provided with infrared range-measurement system; be welded with the probe bracing frame on the described fixedly pole; be provided with curved notch in the probe bracing frame; be fixed on the bracing frame with screw and nut in the curved notch of thermal insulation board insertion bracing frame; described thermal insulation board is provided with two pieces of probes; be welded with screw rod on the described probe shank; needle point is lower than the plane of the opening of chute cell body; fixedlyed connected by screw up and down in probe and thermal insulation board junction; the threaded connection place of two pieces of draw points connects one 2 * 1.0 of signal cable; the other end of described cable: single line connection Switching Power Supply+the 24V joint; in addition single line connects Switching Power Supply 0V joint and is parallel-connected on the coil of 24V auxiliary reclay, and described auxiliary reclay is normal makes war on I 10.0 ports of the DI module that is connected the holding furnace switch board.
Described probe is the stainless steel strip of Φ 10.
Described thermal insulation board is that plate is chewed in the casting and rolling machine casting.
Described probe support is the bracing frame of the rectangle support holder structure of iron plate welding.
Described probe is provided with insulating tape in the junction with thermal insulation board.
The utility model is compared with prior art, and for the individual, safety that can the better protection personnel has reduced workload; For equipment, can protect the safety of equipment, improve automaticity; For company, high efficiency equipment moves continually and steadily and can improve production output, brings productivity effect.
[description of drawings]
Fig. 1 is a schematic diagram of the present utility model;
Fig. 2 is a circuit connection diagram of the present utility model;
Fig. 3, Fig. 4, Fig. 5 are electrical equipment control programme diagrams of the present utility model;
Among the figure 1, infrared range-measurement system 2, the holding furnace 3 of tumbling, thermal insulation board 4, probe 5, chute 6, aluminium liquid 7, fixedly pole 8, Switching Power Supply 9, auxiliary reclay 10, probe bracing frame.
[specific embodiment]
In conjunction with the accompanying drawings the utility model is described further, the manufacturing technology of this device is very clearly concerning this professional people.
As shown in drawings, the utility model comprises mechanical part and electric part.
As shown in Figure 1, mechanical installation aspect:
What mainly consider during installation is how liquid level signal detector probe, high temperature insulating plate and probe bracing frame carry out the consideration of Height Adjustment aspect, install improper or material is selected unreasonablely all to be easy to cause device to damage, and then cause control appliance not reach expected effect.Through repeatedly in practice operational analysis sum up and to draw the conclusion that material is installed and selected for use, the liquid level signal detector probe is selected the stainless steel steel bar of two Φ 10 for use, selecting reason for use is that stainless steel strip is not easy to clear up bending such as chute operation at ordinary times or damage probe because produce the worker, have influence on the height of original adjusting, guaranteeing also on the one hand that in addition probe can not influence accuracy of detection because of high temperature or the roasting corrosion easily of fire in long-term use simultaneously;
Use the casting and rolling machine casting to chew plate for selecting for use of thermal insulation board; this plate has higher intensity than general thermal insulation board; durable; also superior a lot of aspect heat insulation than general thermal insulation board; can guarantee that the stainless steel probe in use can not scorched top signal cable by high temperature; probe also is fixed on the thermal insulation board by screw and nut simultaneously, can regulate the protection height of probe apart from liquid level as required at any time by adjusting nut.
Be exactly selecting for use of probe bracing frame in addition; this is selecting for use admissible object a lot; here we use common iron plate bracing frame; iron plate is welded into a rectangle class support holder structure; a part is vacated as the probe space that walks up and down in the centre; on the other vertical support bar that is fixed by welding in chute next door, guarantee the stability of whole protecting device.Practice has also well proved this point, installs simple and practical durable.
The iron plate bracing frame is fixedly welded on the vertical fixedly pole, keep stable do not come off mobile; A built-in curved notch is equipped with in probe bracing frame inside, by built-in curved notch thermal insulation board is put in, then with screw and nut fixedly the high temperature insulating plate on bracing frame, two probes are to good chute liquid level position, vertically pass the unsettled height place (highly can be adjustable according to the production demand) that moves above chute aluminium liquid of thermal baffle layer, the place use that the probe top contacts with the high temperature insulating plate is gone up double nut and is fixed (requiring in advance to weld a sizeable screw rod on stainless steel probe top).Can adjust the height of probe on chute aluminium liquid by adjusting nut according to producing needs, reach adjustable for height effect.Probe tip uses the control cable to be connected between two nuts as a switching value control signal metering-in control system.
As shown in Figure 2, electric installation control aspect:
To holding furnace chute mouth, relay one 2 * 1.0 signal cable from the holding furnace electrical control cubicles, among two nuts that is connected on two stainless steel probes on the chute Machine guarding, use insulating tape to encase.An other single line and Switching Power Supply output+the 24V series connection, single line and Switching Power Supply are exported 0V and are connected on the coil of auxiliary reclay in addition, from top electrical schematic diagram also as can be seen.The INADD I12.0 of the DI module that inserts Siemens S7-300 normal battle of auxiliary reclay then.A sound and light alarm indicator lamp on tumbling the furnace operating platform, is installed by holding furnace simultaneously, insert DO module Q40.5, output 220V drives, when liquid level rises to when can contact two probes, auxiliary reclay adhesive action, the input signal I12.0 that enters PLC connects, and corresponding output alarm Q40.5 connects, and drives alarm sound.At first reach the purpose that notifying operation hand peril takes place.Secondly in the PID control program, the analog quantity control signal is carried out calculation process exactly, forbid the servo valve liter, give faint automatic decline control signal of servo valve simultaneously, control system is recovered control automatically when aluminium liquid liquid level no longer touches probe, if recovering the automatic control in back still continues to rise, up to touching probe, system can descend again automatically, can ensure to operative employee's time enough so repeatedly and come to handle.In the program when liquid level touches probe, give proportioning valve for by force the voltage of one-0.6V, just can realize faint decline. guarantee that the chute liquid level is in rising.
Select for use a Switching Power Supply (220V changes 24V) and a 24V auxiliary reclay to accept circuit controling element .. physical circuit figure face figure two electric control circuit figure as follows as the stainless steel probe signals.
The operation principle of electric control circuit figure is: when holding furnace is controlled inefficacy chute aluminium liquid liquid level automatically and risen to the protection height that the stainless steel probe establishes in advance; two probes of stainless steel contact aluminium liquid simultaneously; because aluminium liquid is conductor; two stainless steel probe short circuits also make auxiliary reclay KA constitute the loop through Switching Power Supply 24V by the control cable to connect; the normally opened contact that uses KA simultaneously is as Siemens S7-300PLC switch input signal; when the signal KA connection of breaking down enters PLC; export by the PLC user program PID of place calculation process analog quantity; and then control holding furnace lifting servo valve no longer provides the control signal that rises; make holding furnace be stabilized in the protection liquid level, and send sound and light alarm by the accident audible-visual annunciator and remind the operative employee to switch to manual operation processing accident in time.The in-situ processing even if operator can not arrive in the very nick of time for the moment when liquid level is reduced to the protection liquid level of stainless steel probe in detecting when following, is reported to the police and is cut off, and control system is recovered, and enters the generation of previous default automatic control mode up to next accident automatically once more.(illustrate: this transformation only at the control of holding furnace automatic lifting was effectively lost efficacy when the holding furnace operation switches to manual control, did not influence any manual control operation).
As Fig. 3; Fig. 4 and shown in Figure 5; can be clearly seen that by program; when danger signal arrives; the automatic control of holding furnace is in faint descend attitude; if this moment, even if operator was not in time reacted; the control of stove can not go wrong at short notice yet; it can slightly automatically descend; after liquid level is reduced to pre-set protection height, can recover liquid level again again and control automatically, go round and begin again like this, wait for till the artificial manual safety processing of operator always; whole holding furnace fluid level control system has been played good protective action; when holding furnace switched to manual control, control was lost efficacy automatically, can not influence any manual operation.
Claims (5)
1. the monitoring and protecting device of the holding furnace aluminium liquid level control that is used to tumble; comprise the holding furnace of tumbling; the holding furnace electrical control cubicles; chute; Machine guarding; the sound and light alarm indicator lamp; 220V Switching Power Supply and 24V auxiliary reclay; it is characterized in that the described holding furnace of tumbling is provided with the sound and light alarm indicator lamp; described alarm lamp is connected on the DO module Q40.5 port of preservation and controlling cabinet by signal cable; tumble the holding furnace right side to the chute that is provided with stairstepping below the outlet of aluminium liquid; during work; tumbling all has aluminium liquid in holding furnace and the chute; chute the right is provided with mechanical monitoring and protecting device; vertical fixedly pole top at Machine guarding is provided with infrared range-measurement system; be welded with the probe bracing frame on the described fixedly pole; be provided with curved notch in the probe bracing frame; be fixed on the bracing frame with screw and nut in the curved notch of thermal insulation board insertion bracing frame; described thermal insulation board is provided with two pieces of probes; be welded with screw rod on the described probe shank; needle point is lower than the plane of the opening of chute cell body; fixedlyed connected by screw up and down in probe and thermal insulation board junction; the threaded connection place of two pieces of draw points connects one 2 * 1.0 of signal cable; the other end of described cable: single line connection Switching Power Supply+the 24V joint; in addition single line connects Switching Power Supply 0V joint and is parallel-connected on the coil of 24V auxiliary reclay, and described auxiliary reclay is normal makes war on I 10.0 ports of the DI module that is connected the holding furnace switch board.
2. the monitoring and protecting device of a kind of holding furnace aluminium liquid level control that is used to tumble as claimed in claim 1 is characterized in that described probe is the stainless steel strip of Φ 10.
3. the monitoring and protecting device of a kind of holding furnace aluminium liquid level control that is used to tumble as claimed in claim 1 is characterized in that described thermal insulation board is that plate is chewed in the casting and rolling machine casting.
4. the monitoring and protecting device of a kind of holding furnace aluminium liquid level control that is used to tumble as claimed in claim 1 is characterized in that described probe support is the bracing frame of the rectangle support holder structure of iron plate welding.
5. the monitoring and protecting device of a kind of holding furnace aluminium liquid level control that is used to tumble as claimed in claim 1 is characterized in that described probe is provided with insulating tape in the junction with thermal insulation board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201720054U CN202062058U (en) | 2011-05-26 | 2011-05-26 | Monitoring protection device for overturning heat preserving furnace aluminum liquid level control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201720054U CN202062058U (en) | 2011-05-26 | 2011-05-26 | Monitoring protection device for overturning heat preserving furnace aluminum liquid level control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202062058U true CN202062058U (en) | 2011-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201720054U Expired - Fee Related CN202062058U (en) | 2011-05-26 | 2011-05-26 | Monitoring protection device for overturning heat preserving furnace aluminum liquid level control |
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| Country | Link |
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| CN (1) | CN202062058U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441666A (en) * | 2011-12-09 | 2012-05-09 | 西南铝业（集团）有限责任公司 | Method and system for controlling emergency rise of casting runner |
| CN109332672A (en) * | 2018-12-14 | 2019-02-15 | 河北四通新型金属材料股份有限公司 | A kind of electric furnace topples over aluminum water automatic control system |
| CN109782685A (en) * | 2019-01-15 | 2019-05-21 | 南京云海特种金属股份有限公司 | A kind of aluminium bar casting monitoring alarm device |
| CN109822063A (en) * | 2019-03-21 | 2019-05-31 | 中信戴卡股份有限公司 | A kind of molten aluminum liquid level detection device and molten aluminum injected system and method for implanting |
| CN110744043A (en) * | 2019-11-26 | 2020-02-04 | 扬州瑞斯乐复合金属材料有限公司 | Method for controlling liquid level of molten aluminum in wrought aluminum alloy casting process |
-
2011
- 2011-05-26 CN CN2011201720054U patent/CN202062058U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441666A (en) * | 2011-12-09 | 2012-05-09 | 西南铝业（集团）有限责任公司 | Method and system for controlling emergency rise of casting runner |
| CN102441666B (en) * | 2011-12-09 | 2013-07-10 | 西南铝业（集团）有限责任公司 | Method and system for controlling emergency rise of casting runner |
| CN109332672A (en) * | 2018-12-14 | 2019-02-15 | 河北四通新型金属材料股份有限公司 | A kind of electric furnace topples over aluminum water automatic control system |
| CN109782685A (en) * | 2019-01-15 | 2019-05-21 | 南京云海特种金属股份有限公司 | A kind of aluminium bar casting monitoring alarm device |
| CN109822063A (en) * | 2019-03-21 | 2019-05-31 | 中信戴卡股份有限公司 | A kind of molten aluminum liquid level detection device and molten aluminum injected system and method for implanting |
| CN110744043A (en) * | 2019-11-26 | 2020-02-04 | 扬州瑞斯乐复合金属材料有限公司 | Method for controlling liquid level of molten aluminum in wrought aluminum alloy casting process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20130526 |