CN109724426A - Glass furnace controling of the pressure of the oven system - Google Patents
Glass furnace controling of the pressure of the oven system Download PDFInfo
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- CN109724426A CN109724426A CN201811459590.9A CN201811459590A CN109724426A CN 109724426 A CN109724426 A CN 109724426A CN 201811459590 A CN201811459590 A CN 201811459590A CN 109724426 A CN109724426 A CN 109724426A
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Abstract
This disclosure relates to a kind of glass furnace controling of the pressure of the oven system, comprising: the first signal piping is connected to glass furnace, for detecting the pressure P inside glass furnace1；Second signal piping, for detecting the pressure P of glass furnace external environment2；Gas exhaust piping is connected to the gas outlet of glass furnace, is provided with regulating valve on gas exhaust piping；Differential pressure transmitter is connected with the first signal piping and the second signal piping, for obtaining pressure differential Δ P=P1‑P2；And first controller, it is connected with differential pressure transmitter, the aperture for the pressure difference information control and regulation valve that the first controller is used to be obtained according to differential pressure transmitter.That is, the first signal piping and the second signal piping detect furnace pressure P respectively1With furnace external pressure P2, so that differential pressure transmitter obtains pressure difference, after the first controller obtains the pressure difference, the aperture for the regulating valve being located on gas exhaust piping is controlled to adjust, according to production status and can need to adjust pressure difference inside and outside furnace, improve the precision of glass liquid level.
Description
Technical field
This disclosure relates to glassmaking art, and in particular, to a kind of glass furnace controling of the pressure of the oven system.
Background technique
In glass production manufacturing process, especially for liquid crystal glass base, the external and internal pressure of the kiln for production
It affects the quality of glass, in actual production, is become by ambient weather variation, the variation of kiln external environment and kiln internal temperature
A variety of influences such as change cause the pressure difference inside and outside kiln to generate fluctuation, thus the more difficult accurate control of precision of glass liquid level, and
The control precision of liquid level directly influences the yields of product, also affects the service life of kiln.
Summary of the invention
Purpose of this disclosure is to provide a kind of glass furnace controling of the pressure of the oven system, which can have
Pressure difference inside and outside effect control kiln promotes the yields of product to improve the precision of glass liquid level.
To achieve the goals above, the disclosure provides a kind of glass furnace controling of the pressure of the oven system, comprising: the first detection pipe
Road is connected to glass furnace, for detecting the pressure P inside the glass furnace1；Second signal piping, it is described for detecting
The pressure P of glass furnace external environment2；Gas exhaust piping is connected to the gas outlet of the glass furnace, sets on the gas exhaust piping
It is equipped with regulating valve；Differential pressure transmitter is connected, for obtaining pressure with first signal piping and second signal piping
Poor Δ P=P1-P2；And first controller, it is connected with the differential pressure transmitter, first controller is used for according to
The pressure difference information that differential pressure transmitter obtains controls the aperture of the regulating valve.
Optionally, pressure pipe, the first signal piping packet are connected separately on the opposite two sidewalls of the glass furnace
Include the first main pipeline for being connected to the differential pressure transmitter, and the first branch pipe(tube) being connected with the pressure pipe and second
Pipeline.
Optionally, gas-liquid separator is additionally provided on first main pipeline, first main pipeline is in tilted layout, described
The fluid reservoir for going out condensed water for collecting the gas-liquid separator separates is provided in pressure pipe.
Optionally, the gas-liquid separator is multiple, and the junction of first main pipeline and first branch pipe(tube)
It is provided with the gas-liquid separator.
Optionally, the fluid reservoir is formed with overflow hole, and is provided with water sucting plate below and for drying the water suction
The baker of plate.
Optionally, be provided in the pressure pipe ceramic tube being connected with inside the glass furnace and with the ceramics
The metal tube that pipe is connected, the end of the metal tube are connected with gas abrupt release device and release for controlling the gas moment
Put the second controller of device on-off.
Optionally, the periphery of the glass furnace is provided with multiple pressure acquisition devices, second signal piping include with
It is connected to the second main pipeline of the differential pressure transmitter, and a plurality of third branch pipe being connected with multiple pressure acquisition devices
Road.
Optionally, first controller is PID controller.
Optionally, be additionally provided with motor on the gas exhaust piping, the motor respectively with the regulating valve and described first
Controller is connected, and the pressure difference information that first controller is used to be obtained according to the differential pressure transmitter controls the motor
Output, to control the aperture of the regulating valve by the angle for changing blade in the regulating valve.
Optionally, it is additionally provided with the chimney being connected with atmosphere on the gas exhaust piping, is located at the regulating valve and described
Cooler, dirt pocket and air-introduced machine are disposed on pipeline between chimney.
Through the above technical solutions, the first signal piping and the second signal piping detect furnace pressure P respectively1With furnace external pressure
Power P2, so that differential pressure transmitter obtains pressure differential Δ P=P1-P2, after the first controller obtains the pressure difference information, control to adjust
The aperture of regulating valve on gas exhaust piping, so as to need to adjust the pressure difference inside and outside furnace according to production status and production,
The precision of glass liquid level is improved, and then promotes the yields of product.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the glass furnace controling of the pressure of the oven system for the illustrative embodiments that the disclosure provides；
Fig. 2 is the part-structure signal of the glass furnace controling of the pressure of the oven system for the illustrative embodiments that the disclosure provides
Figure；
Fig. 3 is the operation principle schematic diagram of the gas abrupt release device for the illustrative embodiments that the disclosure provides.
Description of symbols
1 glass furnace, 2 regulating valve, 3 differential pressure transmitter
4 first controller, 5 pressure pipe, 51 ceramic tube
52 metal tube, 53 second controller, 61 gas-liquid separator
62 fluid reservoir, 63 water sucting plate, 7 gas abrupt release device
8 pressure acquisition devices, 91 chimney, 92 cooler
93 dirt pocket, 94 blower, 10 gas outlet
11 first main pipeline, 121 first branch pipe(tube), 122 second branch pipe(tube)
13 second main pipeline, 14 third main pipeline
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched
The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
In the disclosure, in the absence of explanation to the contrary, the noun of locality used such as "upper", "lower" are each components
It is undefined in normal operating condition, the page of Fig. 1 is specifically referred to, "inner", "outside" refer to the interior of each spare part profile
With it is outer, the term " first " that uses, " second " etc. are that do not have succession and again to distinguish an element and another element
The property wanted, in addition, following description is when being related to attached drawing, unless otherwise indicated, the same tag in different attached drawings indicate it is identical or
Similar element.
As depicted in figs. 1 and 2, the disclosure provides a kind of glass furnace controling of the pressure of the oven system, including the first signal piping,
Two signal pipings, gas exhaust piping, differential pressure transmitter 3 and controller 4 etc., wherein the first signal piping is connected to glass furnace
1, for detecting the pressure P inside glass furnace 11；Second signal piping is used to detect the pressure P of 1 external environment of glass furnace2；
Gas exhaust piping is connected to the gas outlet 10 of glass furnace 1 and is provided with regulating valve 2；Differential pressure transmitter 3, with the first signal piping
It is connected with the second signal piping, for obtaining pressure differential Δ P=P1-P2；First controller 4, is connected with differential pressure transmitter 3,
Its aperture for being used to control to adjust valve 2 according to the pressure difference information that differential pressure transmitter 3 obtains.That is, the first signal piping and second
Signal piping is respectively used to detection furnace pressure P1With furnace external pressure P2, and pressure value is transferred to differential pressure transmitter 3, so that poor
Pressure transmitter 3 obtains pressure differential Δ P=P1-P2, after the first controller 4 obtains the pressure difference information, control to adjust and be located at exhaust pipe
The aperture of the regulating valve 2 of road, for example, the aperture for increasing regulating valve 2 is exhausted, when furnace pressure is excessively high to reduce furnace
Interior pressure, when furnace pressure is too low, the aperture for reducing regulating valve 2 reduces exhaust, to increase furnace pressure, according to production status
And production needs to adjust the pressure difference inside and outside furnace, the control precision to 1 furnace pressure of glass furnace is improved, to improve glass liquid level
Precision is controlled, guarantees the dissolution quality of glass metal, promotes the yields of product.
It should be noted that above-mentioned P1、P2The measured average pressure value referred to, it can be that multiple measurement points obtain
Average value, the disclosure will be discussed in detail in following embodiment.Above-mentioned pressure differential Δ P can be positive value and be also possible to bear
Number, in addition, the first above-mentioned controller 4 can be set it is with good grounds need the preset value that sets, when pressure difference deviate it is above-mentioned pre-
If value when, the first controller 4 will control to adjust regulating valve 2 aperture so that pressure difference and preset value it is almost the same or in fix
Difference, the disclosure only describes in detail for the former.
In the following, the disclosure will be to pressure P1、P2Detection and the adjusting of pressure differential Δ P describe in detail.
Specifically, for pressure P1Detection, as an alternative embodiment, as depicted in figs. 1 and 2, glass furnace
The pressure pipe 5 being connected with inside it can be connected separately on the opposite two sidewalls of furnace 1, the first signal piping includes being connected to
First main pipeline 11 of differential pressure transmitter 3, and the first branch pipe(tube) 121 and the second branch pipe(tube) 122 that are connected with pressure pipe 5,
The pressure at both sides inside glass furnace 1 is obtained by the pressure pipe 5 of 1 two sides of glass furnace respectively, via the first main pipeline 11
To obtain average pressure P1, to more accurately obtain the pressure inside glass furnace 1.
According to some embodiments, as shown in Figures 2 and 3, it is also provided with gas-liquid separator 61 on the first main pipeline 11,
With by the condensed moisture generated in the first main pipeline 11, the first branch pipe(tube) 121 and the second branch pipe(tube) 122 from preventing condensation flow
Enter in differential pressure transmitter 3, the first main pipeline 11 can be in tilted layout, specifically, connect differential pressure transmitter 3 a side position compared with
Height, the side for connecting above-mentioned branch pipe(tube) is lower, to reach preferably reflowing result, can be set in pressure pipe 5 for receiving
Collection gas-liquid separator 61 isolates the fluid reservoir 62 of condensed water, which can be connected in the lower section of pressure pipe 5, can also be with
Be connected to pressure pipe 5 any direction, the disclosure to this with no restriction.
According to some embodiments, as shown in Figures 2 and 3, above-mentioned gas-liquid separator 61 can be respectively used to point to be multiple
It can be set from the condensed water that above-mentioned pipeline generates everywhere, and in the junction of the first main pipeline 11 and the first branch pipe(tube) 121
Gas-liquid separator 61, this junction is in the key area that temperature is lower by height, therefore can generate more condensed water, and junction is set
Being equipped with gas-liquid separator 61 can be improved the reflux efficiency of condensed water, in addition, the feelings being in tilted layout in above-mentioned first main pipeline 11
Under condition, the first branch pipe(tube) 121 and the second branch pipe(tube) 122 can also be in tilted layout, the disclosure to the arrangement form of above-mentioned pipeline not
It is restricted.
According to some embodiments, as shown in figure 3, above-mentioned fluid reservoir 62 could be formed with overflow hole, specifically, overflow hole
It can be formed in the top of fluid reservoir 62, and in the lower section of fluid reservoir 62 be additionally provided with water sucting plate 63 and for drying water sucting plate 63
Baker can generate more condensed water, therefore when fluid reservoir 62 is filled in the case where system operates for a long time, condense
Water can be flowed out by above-mentioned overflow hole and be absorbed by the water sucting plate 63 of 62 lower section of fluid reservoir, and water sucting plate 63 is dried by baker
Or the radiative oven dry by kiln itself, to guarantee the normal operation of system.It should be noted that the condensed water in fluid reservoir 62
Pressure pipe 5 is isolated from the outside by the state remained full of at any time, in addition, the disclosure does not make the specific material of water sucting plate 63
Limitation, such as can be asbestos board etc., to reach preferably soaking effect.
More specifically, as an alternative embodiment, as shown in figure 3, being provided in pressure pipe 5 and glass furnace 1
The ceramic tube 51 and the metal tube 52 being connected with ceramic tube 51, the end of metal tube 52 that inside is connected are connected with gas moment
Release 7 and second controller 53 for controlling 7 on-off of gas abrupt release device, second controller 53 can control for PLC
Device, there are two output ends to be connected respectively with the pressure pipe 5 for being located at 1 two sides of glass furnace for tool, when second controller 53 controls
When gas abrupt release device 7 is powered, the high pressure gas of release enters in ceramic tube 51 through metal tube 52, can clean up pottery moment
Volatile matter in porcelain tube 51 and pressure pipe 5 guarantees the safe operation of system, and in remaining working time, second controller 53 is controlled
Gas abrupt release device 7 is in off-position, i.e. gas abrupt release device 7 can be intermittent work.More specifically, taking
It could be formed with relief hole and blowing mouth in pressure pipe 5, which may include pulse valve, have for sealing
The spool for closing relief hole, for closing the diaphragm of blowing mouth, and with the elastic component that connect above-mentioned spool and diaphragm, work as pulse valve
When power-off, i.e., under power failure state, under the active force of elastic component such as spring, spool closes relief hole, so that pressure
High pressure gas in pipe 5 will not be discharged, so that pressure-reducing chamber (not shown) is consistent with the air pressure of lower chamber (not shown),
Under the active force of elastic component, diaphragm closing blowing mouth, gas abrupt release device 7 at this moment is in off working state；Work as pulse
When valve is powered, i.e., under electricity condition, spool is lifted up under the action of electromagnetic force, open relief hole to generate pressure difference,
At this point, the rate of outflow of relief hole is greater than the inflow velocity of pressure-reducing chamber gas, decompression chamber pressure is enabled to be lower than the pressure of lower chamber,
The gas of lower chamber jacks up diaphragm under the action of pressure difference, open blowing mouth, gas moment clean up 5 inner wall of pressure pipe and its with
Glass furnace 1 be connected to pipeline inside generate dust stratification, guarantee the normal operation of system, here, the direction of blowing refer to from
Pressure pipe 5 and its pipeline connecting with glass furnace 1 are blown to the inside of glass furnace 1, both will not influence kiln just in this way
Often production, will not make dust be scattering into outside kiln, environment be polluted, since gas abrupt release device 7 belongs to this field ratio
More typical component, specific structure and working principle do not do excessive introduction herein.
Above describe pressure P1It is specific detection and each type component matched with its, pressure P is explained below2's
Specific detection.
Specifically, as depicted in figs. 1 and 2, multiple pressure acquisition devices 8, the second inspection has can be set in the periphery of glass furnace 1
Test tube road includes and is connected to the second main pipeline 13 of differential pressure transmitter 3, and is connected with multiple pressure acquisition devices 8 a plurality of
Third branch pipe(tube) 14, above-mentioned multiple pressure acquisition devices 8 can be set in around glass furnace 1, can also partially set
Be placed in the two sides with glass furnace 1, be partially disposed in proximity to the side of differential pressure transmitter 3, the purpose of arrangement be obtain it is more quasi-
True external pressure P2, the disclosure to this with no restriction.
Above-mentioned differential pressure transmitter 3 is the common structure in this field, for measuring the pressure of medium in process pipe or tank body
Power is poor, and the differential pressure value of measurement is converted into current signal output by the conversion of data, evolution, and the disclosure does not go to live in the household of one's in-laws on getting married to it
It states.
According to some embodiments, the first controller 4 in the disclosure can be PID controller, in industrial processes,
Its state-variables such as the temperature of process units, pressure, flow, liquid level are often required that maintain it is certain numerically, or press
Certain rule variation, to meet the requirement of production technology, which is according to PID control principle to entire control system
System carries out bias adjustment, thus keep the actual value of the Δ P in the controlled variable i.e. disclosure consistent with its preset value, the PID control
It can be with more convenient accurate Δ P adjusted in the disclosure, its working principle is that it is known in the art that the disclosure does not go to live in the household of one's in-laws on getting married to this
It states.
In the following, the disclosure will be described in detail the specific adjusting of pressure differential Δ P.
As an alternative embodiment, as depicted in figs. 1 and 2, motor is also provided on gas exhaust piping, the electricity
Machine can be servo motor, be connected respectively with regulating valve 2 and the first controller 4, and the first controller 4 according to differential pressure for becoming
Send the pressure difference information of the acquisition of device 3 to control the output of motor, for example, revolving speed, to pass through the angle for changing blade in regulating valve 2
It spends to control to adjust the aperture of valve 2, so that pressure differential deltap P is consistent with preset value, specifically, if furnace pressure P1It is higher, then
The output for controlling motor increases, and the angle of 2 blade of regulating valve increases, and the aperture of regulating valve 2 increases, so that above-mentioned gas exhaust piping
Capacity increases, then furnace pressure declines.On the contrary, if furnace pressure P1Relatively low, then controlling motor output reduces, regulating valve 2
The angle of blade reduces, and the aperture of regulating valve 2 reduces, so that the capacity of above-mentioned gas exhaust piping reduces, then furnace pressure increases.
In addition, being additionally provided with the cigarette being connected with atmosphere as depicted in figs. 1 and 2, on gas exhaust piping according to some embodiments
Chimney 91 is used to for gas being emitted into atmosphere, can be disposed on the pipeline between regulating valve 2 and chimney 91 cold
But device 92, dirt pocket 93 and air-introduced machine 94.Cooler 92 can be made of multistage pipeline and arrange in bending, will be from glass
The high-temperature gas cooling being discharged in kiln 1, dirt pocket 92 are used to remove the dust and each pollutant in discharge gas, air-introduced machine
94 are used to provide power, and the gas of discharge is introduced into chimney 91, above-mentioned chimney 91, cooler 92, dirt pocket 93 and draw
The specific structure disclosure of blower 94 to it with no restriction.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the disclosure to it is various can
No further explanation will be given for the combination of energy.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought equally should be considered as disclosure disclosure of that.
Claims (10)
1. a kind of glass furnace controling of the pressure of the oven system characterized by comprising
First signal piping is connected to glass furnace (1), for detecting the internal pressure P of the glass furnace (1)1；
Second signal piping, for detecting the pressure P of the glass furnace (1) external environment2；
Gas exhaust piping is connected to the gas outlet (10) of the glass furnace (1), is provided with regulating valve (2) on the gas exhaust piping；
Differential pressure transmitter (3) is connected, for obtaining pressure differential Δ with first signal piping and second signal piping
P=P1-P2；And
First controller (4) is connected with the differential pressure transmitter (3), and first controller (4) is used for according to the differential pressure
The pressure difference information that transmitter (3) obtains controls the aperture of the regulating valve (2).
2. glass furnace controling of the pressure of the oven system according to claim 1, which is characterized in that the glass furnace (1) is opposite
Two sidewalls on be connected separately with pressure pipe (5), first signal piping includes be connected to the differential pressure transmitter (3) the
One main pipeline (11), and the first branch pipe(tube) (121) and the second branch pipe(tube) (122) that are connected with the pressure pipe (5).
3. glass furnace controling of the pressure of the oven system according to claim 2, which is characterized in that on first main pipeline (11)
It is additionally provided with gas-liquid separator (61), first main pipeline (11) is in tilted layout, and is provided in the pressure pipe (5) for receiving
Collect the fluid reservoir (62) that the gas-liquid separator (61) isolates condensed water.
4. glass furnace controling of the pressure of the oven system according to claim 3, which is characterized in that the gas-liquid separator (61) is
It is multiple, and the junction of first main pipeline (11) and first branch pipe(tube) (121) is provided with the gas-liquid separator
(61)。
5. glass furnace controling of the pressure of the oven system according to claim 3, which is characterized in that formed on the fluid reservoir (62)
There is overflow hole, and is provided with water sucting plate (63) and the baker for drying the water sucting plate (63) below.
6. glass furnace controling of the pressure of the oven system according to claim 2, which is characterized in that setting in the pressure pipe (5)
Have and the ceramic tube (51) being connected inside the glass furnace (1) and the metal tube being connected with the ceramic tube (51)
(52), the end of the metal tube (52) is connected with gas abrupt release device (7) and for controlling the gas abrupt release device
(7) second controller (53) of on-off.
7. glass furnace controling of the pressure of the oven system according to claim 1, which is characterized in that the week of the glass furnace (1)
While being provided with multiple pressure acquisition devices (8), second signal piping includes and is connected to the second of the differential pressure transmitter (3)
Main pipeline (13), and a plurality of third branch pipe(tube) (14) being connected with multiple pressure acquisition devices (8).
8. glass furnace controling of the pressure of the oven system according to claim 1, which is characterized in that first controller (4) is
PID controller.
9. glass furnace controling of the pressure of the oven system described in any one of -8 according to claim 1, which is characterized in that the exhaust
Motor is additionally provided on pipeline, the motor is connected with the regulating valve (2) and first controller (4) respectively, described
First controller (4) is used to control the output of the motor according to the pressure difference information that the differential pressure transmitter (3) obtain, with logical
Cross the aperture for changing the angle control regulating valve (2) of blade in the regulating valve (2).
10. glass furnace controling of the pressure of the oven system according to claim 9, which is characterized in that also set on the gas exhaust piping
It is equipped with the chimney (91) being connected with atmosphere, is successively set on the pipeline between the regulating valve (2) and the chimney (91)
It is equipped with cooler (92), dirt pocket (93) and air-introduced machine (94).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811459590.9A CN109724426A (en) | 2018-11-30 | 2018-11-30 | Glass furnace controling of the pressure of the oven system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811459590.9A CN109724426A (en) | 2018-11-30 | 2018-11-30 | Glass furnace controling of the pressure of the oven system |
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| CN201811459590.9A Pending CN109724426A (en) | 2018-11-30 | 2018-11-30 | Glass furnace controling of the pressure of the oven system |
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Application publication date: 20190507 |