CN219035083U - Switching device for smoke exhaust fan of glass kiln - Google Patents
Switching device for smoke exhaust fan of glass kiln Download PDFInfo
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- CN219035083U CN219035083U CN202223015921.4U CN202223015921U CN219035083U CN 219035083 U CN219035083 U CN 219035083U CN 202223015921 U CN202223015921 U CN 202223015921U CN 219035083 U CN219035083 U CN 219035083U
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- smoke exhaust
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Abstract
The utility model discloses a switching device of a smoke exhaust fan of a TFT substrate glass kiln, and belongs to the technical field of TFT glass manufacturing. The switching device comprises an inlet linkage motor and an outlet linkage motor; the inlet linkage motor is connected with a first inlet valve and a second inlet valve; the outlet linkage motor is provided with a first outlet valve and a second outlet valve; a first smoke exhaust fan is arranged between the first inlet valve and the first outlet valve; and a second smoke exhaust fan is arranged between the second inlet valve and the second outlet valve. The online switching standby machine of the smoke exhaust fan is improved, the regulation and control precision is guaranteed, and the pressure fluctuation in the furnace is relatively small.
Description
Technical Field
The utility model belongs to the technical field of glass manufacturing, and particularly relates to a switching device of a smoke exhaust fan of a glass kiln.
Background
The liquid crystal glass belongs to borate glass, the content of boride, nitrogen oxide and the like in flue gas is higher, in order to ensure that the flue gas emission reaches the standard, the flue gas needs to be treated such as NCR, the dust such as boride of the flue gas needs to be reduced in the process of the flue gas from the interior of a furnace to an NCR reaction tower, the front-end flue part is adopted in the design to rapidly cool down by using cooling air, the design scheme of rapidly condensing the dust such as boride is adopted, the process requirement is met, but the discharge process of the flue gas, a small amount of volatile matters are condensed when a smoke exhaust fan operates for a long time, in normal production, the smoke exhaust fan needs to be periodically switched for maintenance of equipment when the smoke exhaust fan operates for a period of time, and the internal pressure of a kiln can be influenced by slight difference in the matching of the switching process.
In order to ensure normal furnace pressure and stable process, the smoke exhaust fan needs to be periodically switched for maintenance. At present, the online switching of the smoke exhaust fan adopts measures that one person communicates with on-site control valve staff through an interphone, the frequency of the remote control smoke exhaust fan regulates and controls the furnace pressure to be stable, on-site two-person control valve switching is carried out, in the process, the fluctuation of the furnace pressure can be caused by slight deviation between the remote control staff and on-site matching, and the fluctuation of the furnace pressure can cause the fluctuation of glass liquid in a kiln, so that a large number of defects are caused.
Disclosure of Invention
In order to overcome the defect that the furnace pressure is unstable due to the fact that operation consistency is difficult to achieve among the smoke exhaust fans in the prior art, the utility model aims to provide the glass kiln smoke exhaust fan switching device, which improves the existing smoke exhaust fan system device, so that the operation is relatively simple, the process is easier to control, and fluctuation of the furnace pressure in the process of switching fans is reduced.
In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
the utility model provides a switching device of a smoke exhaust fan of a glass kiln, which comprises a first exhaust pipeline and a second exhaust pipeline which are connected in parallel; the first exhaust pipeline is sequentially provided with a first inlet valve, a first smoke exhaust fan and a first outlet valve; a second inlet valve, a second smoke exhaust fan and a second outlet valve are sequentially arranged on the second exhaust pipeline;
the first inlet valve and the second inlet valve are both connected with a first motor; the first outlet valve and the second outlet valve are both connected with a second motor.
In the utility model, the first motor and the second motor are both linkage motors.
The utility model further provides that the first motor is an inlet linkage motor; the second motor is an outlet linkage motor.
The utility model further provides that the inlet linkage motor and the outlet linkage motor are electrically connected with a control module.
In the utility model, the control module is connected with a DCS control system.
The utility model further provides that the gas inlets of the first exhaust pipeline and the second exhaust pipeline are connected with a treated flue gas inlet.
The utility model further discloses a chimney connected with the air outlets of the first exhaust pipe and the second exhaust pipe.
The utility model further provides that the first smoke exhaust fan and the second smoke exhaust fan have the same equipment parameters.
The glass kiln is a TFT substrate glass kiln.
Compared with the prior art, the utility model has the following beneficial effects:
the glass kiln smoke exhaust fan switching device is additionally provided with the inlet linkage motor and the outlet linkage motor, and mainly has the effects of connecting inlet and outlet valves of two paths of smoke exhaust fans, driving the same-opening adjusting valve by the motor, ensuring the safety of internal equipment in the area and the stability of the pressure in the furnace, improving the online switching standby machine of the smoke exhaust fans, ensuring the regulation and control precision and ensuring relatively smaller fluctuation of the pressure in the furnace.
Drawings
FIG. 1 is a diagram of a prior art smoke exhaust blower apparatus;
fig. 2 is a diagram of a switching device of a smoke exhaust fan according to the present utility model 1;
wherein: 1-number one inlet valve; 2-number one outlet valve; 3-a first smoke exhaust fan; a 4-second inlet valve; a 5-second outlet valve; 6-a second smoke exhaust fan; 7-a treated flue gas inlet; 8-an inlet linkage motor; 9-an outlet linkage motor; 10-chimney.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The utility model is described in further detail below with reference to the attached drawing figures:
as shown in fig. 2, the switching device of the smoke exhaust fan of the glass kiln provided by the utility model comprises a first inlet valve 1, a first outlet valve 2, a first smoke exhaust fan 3, a second inlet valve 4, a second outlet valve 5, a second smoke exhaust fan 6, a treated smoke inlet 7, an inlet linkage motor 8, an outlet linkage motor 9 and a chimney 10;
the exhaust pipeline can be further divided into an air inlet pipeline and an air outlet pipeline; the exhaust pipeline comprises a first exhaust pipeline and a second exhaust pipeline; the first exhaust pipeline is connected with the second exhaust pipeline in parallel; the treated flue gas inlet 7 is connected with an air inlet of the first smoke exhaust fan 3 through a first air inlet pipeline; the first inlet valve 1 is arranged on the first air inlet pipeline; the air outlet of the first smoke exhaust fan 3 is connected with the air inlet of the chimney 10 through a first air outlet pipeline; the first outlet valve 2 is arranged on the first outlet pipeline;
the treated flue gas inlet 7 is connected with an air inlet of a second smoke exhaust fan 6 through a second air inlet pipeline; the second inlet valve 4 is arranged on the second air inlet pipeline; the air outlet of the second smoke exhaust fan 6 is connected with the air inlet of the chimney 10 through a second air outlet pipe; the second outlet valve 5 is arranged on a second outlet pipeline;
two ends of the inlet linkage motor 8 are respectively connected with the first inlet valve 1 and the second inlet valve 4;
two ends of the outlet linkage motor 9 are respectively connected with the first outlet valve 2 and the second outlet valve 5;
the first smoke exhaust fan 3 and the second smoke exhaust fan 6 have the same equipment parameters.
The device provided by the utility model is a switching device of a smoke exhaust fan of a TFT substrate glass kiln.
As shown in fig. 1, the procedure for using the conventional smoke exhaust fan apparatus is as follows:
s1: when the first smoke exhaust fan 3 runs to a certain period and needs to be switched to the second smoke exhaust fan 6 to run, an operator fully opens the second outlet valve 5 and manually opens the second smoke exhaust fan 6;
s2: the interphone is used for coordinating the remote control of the furnace pressure personnel, two persons start to operate synchronously, one person gradually closes the first inlet valve 1 and the other person gradually opens the second inlet valve 4;
s3: the remote control personnel adjusts according to the on-site adjustment condition and the furnace pressure display value until the first inlet valve 1 is completely closed, the second inlet valve 4 is completely opened, and the remote control personnel adjusts and stabilizes the furnace pressure;
s4: the on-site personnel close the first smoke exhaust fan 3 and the first outlet valve 2.
In the prior art, a valve is controlled by manual operation of a person, synchronous and consistent operation is difficult to achieve, and furnace pressure is difficult to stabilize; the two motors drive the same-opening adjusting valve, so that the safety of equipment in the area and the stability of the pressure in the furnace are ensured, the online switching standby machine of the smoke exhaust fan is improved, the regulation and control precision is ensured, and the fluctuation of the pressure in the furnace is relatively small.
The application method of the utility model comprises the following steps:
s1: when the first smoke exhaust fan 3 runs to a certain period and needs to be switched to the second smoke exhaust fan 6 to run, when the same frequency of the second smoke exhaust fan 6 and the first smoke exhaust fan 3 is 25HZ, the second outlet valve 5 is fully opened by the action of the outlet linkage motor 9;
s2: the inlet linkage motor 8 executes actions to synchronously open the second inlet valve 4 and close the first inlet valve 1; the opening and closing speeds of the second inlet valve 4 and the first inlet valve 1 are consistent;
s3: the remote operator closes the first smoke exhaust fan 3, the outlet linkage motor 9 acts to close the first outlet valve 2, and the fan switching operation is completed.
In the utility model, as a preferable scheme, the inlet linkage motor 8 and the outlet linkage motor 9 are electrically connected with a control module; the control module is connected with a DCS control system.
As an alternative, the control module is a PLC controller, as shown in fig. 2, and the method for switching the smoke exhaust fan of the glass kiln based on the device comprises the following steps:
s1: when the first smoke exhaust fan 3 runs to a certain period and needs to be switched to the second smoke exhaust fan 6 to run, the second smoke exhaust fan 6 is started, and a remote operator gives the same frequency to the second smoke exhaust fan 6 and the first smoke exhaust fan 3 and clicks a switch button in the start PLC controller.
S2: the outlet linkage motor 9 acts to fully open the second outlet valve 5.
S3: after confirming that the second outlet valve 5 is fully opened, when the frequency of the fan to be switched is consistent with the current operating frequency, the PLC controller synchronously opens the second inlet valve 4 and closes the first inlet valve 1 by respectively setting the speeds of opening 1 inlet and closing the other inlet valve according to the difference value of the detected value and the set value of the furnace compaction state after the fan outlet valve is fully opened and the difference value.
S4: the PLC controller continues to send out instructions, namely, after confirming that the switching is finished, the corresponding outlet valve of the smoke exhaust fan is closed, and after confirming that the second inlet valve 4 is opened in place and the first inlet valve 1 is closed in place, the remote operator closes the first smoke exhaust fan 3, and the outlet linkage motor 9 acts to close the first outlet valve 2, so that the fan switching operation is finished.
The target set value of the furnace pressure is 20Mpa; the detection value of the furnace compaction is 15-25 Mpa; the difference between the furnace pressure actual detection value and the furnace pressure target set value is equal to the difference between the speeds of opening 1 inlet and closing the other inlet valve; the difference value of the speeds of opening 1 inlet and closing the other inlet valve is less than or equal to 5S;
when the furnace pressure detection value is smaller than the furnace pressure target set value of 20MPa, the opening speed of the switched inlet valve is larger than the speed of closing the original inlet valve;
when the furnace pressure detection value is equal to the furnace pressure target set value of 20MPa, the opening speed of the inlet valve is equal to the original closing speed of the inlet valve;
when the furnace pressure detection value is larger than the furnace pressure target set value by 20MPa, the opening speed of the switched inlet valve is smaller than the speed of closing the original inlet valve.
As an alternative, the inlet linkage motor 8 can control the relative speed of the first inlet valve 1 or the second inlet valve 4 to synchronously close the second inlet valve 4 or the first inlet valve 1 according to the control of the furnace pressure so as to control the furnace pressure fluctuation to be lower in the switching process; the outlet linkage motor 9 can independently open or close the first outlet valve 2 or the second outlet valve 5 according to control.
Compared with the prior art, the switching method reduces the risk of pressure fluctuation in the furnace in the switching process through the additionally arranged inlet linkage motor and outlet linkage motor, and has the advantages of simplicity in operation, high consistency, good integrity, stable furnace pressure and safe and controllable process.
The above is only for illustrating the technical idea of the present utility model, and the protection scope of the present utility model is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present utility model falls within the protection scope of the claims of the present utility model.
Claims (9)
1. The switching device of the smoke exhaust fan of the glass kiln is characterized by comprising a first exhaust pipeline and a second exhaust pipeline which are connected in parallel; a first inlet valve (1), a first smoke exhaust fan (3) and a first outlet valve (2) are sequentially arranged on the first exhaust pipeline; a second inlet valve (4), a second smoke exhaust fan (6) and a second outlet valve (5) are sequentially arranged on the second exhaust pipeline;
the first inlet valve (1) and the second inlet valve (4) are connected with a first motor; the first outlet valve (2) and the second outlet valve (5) are both connected with a second motor.
2. The glass kiln exhaust fan switching device according to claim 1, wherein the first motor and the second motor are both linked motors.
3. The glass kiln exhaust fan switching device according to claim 2, characterized in that the first motor is an inlet linkage motor (8); the second motor is an outlet linkage motor (9).
4. A glass kiln smoke exhaust fan switching device according to claim 3, wherein the inlet linkage motor (8) and the outlet linkage motor (9) are electrically connected with a control module.
5. The glass kiln exhaust fan switching device according to claim 4, wherein the control module is connected with a DCS control system.
6. The glass kiln exhaust fan switching device according to claim 1, wherein the air inlets of the first exhaust pipeline and the second exhaust pipeline are connected with a treated flue gas inlet (7).
7. The glass kiln exhaust fan switching device according to claim 1, wherein the air outlets of the first exhaust pipe and the second exhaust pipe are connected with a chimney (10).
8. The glass kiln exhaust fan switching device according to claim 1, wherein the first exhaust fan (3) and the second exhaust fan (6) have the same equipment parameters.
9. The glass kiln exhaust fan switching device according to claim 1, wherein the glass kiln is a TFT substrate glass kiln.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022228712717 | 2022-10-28 | ||
| CN202222871271 | 2022-10-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219035083U true CN219035083U (en) | 2023-05-16 |
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ID=86276138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223015921.4U Active CN219035083U (en) | 2022-10-28 | 2022-11-11 | Switching device for smoke exhaust fan of glass kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219035083U (en) |
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2022
- 2022-11-11 CN CN202223015921.4U patent/CN219035083U/en active Active
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