Pressure loss protection device for bubbler of glass kiln

Abstract

The utility model provides a glass kiln bubbler decompression protection device, which belongs to the technical field of glass kiln bubblers, and comprises a control system and a bubbler compressed air storage tank connected with a gas station gas inlet pipeline, the bubbler compressed air storage tank is connected with a nitrogen cylinder through a control valve, the control valve is connected with the control system, and the control system is connected with the bubbler compressed air storage tank. The bubbler compressed air storage tank is provided with a nitrogen cylinder, so that gas can be injected into the bubbler compressed air storage tank through the nitrogen cylinder under the control of the control system to keep the pressure in the bubbler compressed air storage tank. The bubbler solves the technical problem of how to ensure normal operation of the bubbler when compressed air of the bubbler stops and loses pressure in the prior art.

Description

Technical Field

[0001] This application relates to the technical field of bubblers for glass furnaces, and particularly to a pressure loss protection device for a bubbler of a glass furnace. Background Art

[0002] When producing cover glass by the float process, the bubbler of the glass furnace is one of its important devices. Its main function is to blow air or other gases into the furnace to promote the flow and mixing of the glass liquid, improve the uniformity and quality of the glass. By controlling the bubbling frequency and gas flow rate of the bubbler, the atmosphere and temperature in the furnace can be adjusted, so as to realize the control of the glass melting process, and the following improvements can be achieved in the melting of the furnace: ① The glass liquid is more homogenized; ② The temperature of the glass liquid is increased; ③ The space temperature is reduced; ④ The amount of mirabilite is reduced, and SO2 emissions are reduced; ⑤ The output is increased; ⑥ The energy consumption is reduced; ⑦ The glass quality is improved; ⑧ The service life is extended.

[0003] Using bubblers will bring a series of benefits to glass production, bringing significant economic and social benefits to enterprises. However, once the bubbler has a loss of pressure due to a compressed air outage, the glass liquid will penetrate into the pores and cause blockage of the glass. Once the bubbler is blocked, it can only be replaced under hot conditions. Replacing the bubbler not only has a huge impact on normal production but also damages the bottom bricks of the furnace, reducing the service life of the furnace and bringing immeasurable losses to the enterprise.

[0004] In the prior art, for example, the patent application "A Bubbling System Applied to a Glass Melting Furnace" with the publication number CN207944009U includes a bubbler, a retracting and extending device, a control actuator, a pressure switch, a temperature sensor, a flow switch, an industrial television, an operation panel, and a computer; the bubbler is connected to the retracting and extending device through a fixing frame, and a control actuator is arranged at the tail of the retracting and extending device. The signals of the control actuator, the industrial television, the pressure switch, the temperature sensor, and the flow switch are all transmitted to the computer to remotely control the pressure of the water supply and gas supply, the temperature of the water supply and return water, and the flow rate of the return water and gas supply of the bubbler; when the pressure, temperature, or flow rate is abnormal, the bubbler can be controlled to drop to a safe height at the bottom of the melting furnace. It can be seen that the pressure of the gas supply pipeline of the bubbler is controlled by setting a pressure gauge and a pressure switch at the gas supply station. When the pressure, temperature, or flow rate is abnormal, the bubbler can be controlled to drop to a safe height at the bottom of the melting furnace. Its internal pressure is regulated by controlling the position of the bubbler. This control method has a complex structure, and the time delay generated during the process of moving the height of the bubbler makes the timeliness and sensitivity of its pressure regulation relatively low. Summary of the Utility Model

[0005] One technical problem to be solved by this application is: how to ensure the normal operation of the bubbler when the bubbler has a loss of pressure due to a compressed air outage.

[0006] To solve the above technical problems, an embodiment of the present application provides a pressure loss protection device for a bubbler in a glass furnace, which includes a control system and a bubbler compressed air storage tank connected to the gas station inlet pipeline. The bubbler compressed air storage tank is connected to a nitrogen gas cylinder through a control valve, and the control valve is connected to the control system, so that under the control of the control system, gas can be injected into the bubbler compressed air storage tank through the nitrogen gas cylinder to maintain the pressure in the bubbler compressed air storage tank.

[0007] In some embodiments, the bubbler compressed air storage tank is connected to a pressure gauge, and the pressure gauge is connected to the control system.

[0008] In some embodiments, a pressure transmitter is arranged between the pressure gauge and the control system.

[0009] In some embodiments, the control system is a PLC control system.

[0010] In some embodiments, the control valve is a nitrogen pressure maintaining control valve, and a first check valve is arranged between the nitrogen pressure maintaining control valve and the bubbler compressed air storage tank.

[0011] In some embodiments, the control system is connected to an alarm.

[0012] In some embodiments, a compressed air inlet control valve is arranged on the gas station inlet pipeline, the compressed air inlet control valve is connected to the control system, and a second check valve is arranged between the bubbler compressed air storage tank and the compressed air inlet control valve.

[0013] In some embodiments, a safety relief valve is arranged at the top of the bubbler compressed air storage tank.

[0014] In some embodiments, a drain valve is arranged at the bottom of the bubbler compressed air storage tank.

[0015] In some embodiments, the bubbler compressed air storage tank is connected to the bubbler through an outlet valve.

[0016] According to the above technical solution, the beneficial effects of a pressure loss protection device for a bubbler in a glass furnace of the present application are as follows:

[0017] A pressure loss protection device for a bubbler in a glass furnace. Under normal circumstances, the air supply station connected to the compressed air storage tank of the bubbler supplies air to ensure the gas pressure in the compressed air storage tank of the bubbler. A nitrogen gas tank is connected to the compressed air storage tank of the bubbler. When the compressed air supply from the air supply station fails and the pressure is lost in the bubbler system, the control system controls the control valve connected to the nitrogen gas cylinder, and then the nitrogen gas cylinder timely supplies external gas to the compressed air storage tank of the bubbler to maintain the pressure in the compressed air storage tank of the bubbler, ensuring the normal operation of the bubbler, preventing the bubbler from being blocked, and avoiding the huge impact on normal production and the damage to the furnace. It can be seen that a pressure loss protection device for a bubbler in a glass furnace of the present application solves the technical problem of how to ensure the normal operation of the bubbler when the compressed air supply fails and the pressure is lost in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of a pressure loss protection device for a bubbler in a glass furnace disclosed in an embodiment of the present application.

[0020] Description of the reference numerals:

[0021] 1. Compressed air storage tank of the bubbler; 2. Nitrogen gas cylinder; 3. PLC control system; 4. Pressure gauge; 5. Alarm; 6. Nitrogen pressure maintaining control valve; 7. Pressure transmitter; 8. First check valve; 9. Compressed air inlet control valve; 10. Second check valve; 11. Safety relief valve; 12. Drain valve; 13. Outlet valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following further describes the embodiments of the present application in detail with reference to the drawings and examples. The detailed description and drawings of the following examples are used to exemplarily illustrate the principle of the present application, but cannot be used to limit the scope of the present application. The present application can be implemented in many different forms, not limited to the specific embodiments disclosed in the text, but including all technical solutions falling within the scope of the claims.

[0023] These embodiments of the present application are provided to make the present application thorough and complete, and to fully express the scope of the present application to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of the components and steps described in these embodiments, the components of the materials, the numerical expressions and values should be interpreted as merely exemplary, rather than as limitations.

[0024] It should be noted that in the description of this application, unless otherwise specified, the meaning of "a plurality of" is greater than or equal to two; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", etc. is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0025] In addition, the "first", "second" and similar terms used in this application do not denote any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. Words such as "include" or "comprise" mean that the elements before this word cover the elements listed after this word, and do not exclude the possibility of also covering other elements.

[0026] It should also be noted that in the description of this application, unless otherwise clearly specified and defined, the terms "install", "connect", "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0027] All terms used in this application have the same meanings as understood by those of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as, should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.

[0028] Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods and devices should be regarded as part of the specification.

[0029] Figure 1 is a schematic structural diagram of a pressure loss protection device for a glass furnace bubbler disclosed in an embodiment of this application, as Figure 1As shown in the figure, the present application provides a pressure loss protection device for a bubbler of a glass furnace, including a control system and a bubbler compressed air storage tank 1 connected to the gas station inlet pipeline. The bubbler compressed air storage tank 1 is connected to a nitrogen gas cylinder 2 through a control valve, and the control valve is connected to the control system so that under the control of the control system, gas can be injected into the bubbler compressed air storage tank 1 through the nitrogen gas cylinder 2 to maintain the pressure in the bubbler compressed air storage tank 1.

[0030] Specifically, the bubbler compressed air storage tank 1 is connected to the gas station inlet pipeline. Under normal circumstances, compressed air is input into the bubbler compressed air storage tank 1 through the gas station inlet pipeline to ensure the pressure level in the bubbler compressed air storage tank 1. When a failure occurs in the gas supply path of the gas station and the gas required pressure cannot be provided for the bubbler compressed air storage tank 1, how to efficiently and simply maintain the gas pressure in the bubbler compressed air storage tank 1 becomes the key to whether the bubbler can work properly. In the present application, a nitrogen gas tank 2 is connected to the bubbler compressed air storage tank 1, so that when a gas station compressed air outage and pressure loss occur in the bubbler system, under the control of the control system, the nitrogen gas cylinder 2 can provide external gas for the bubbler compressed air storage tank 1 in time to maintain the pressure of the bubbler compressed air storage tank 1, ensuring the normal operation of the bubbler, preventing the bubbler from being blocked, and avoiding the huge impact on normal production and damage to the furnace.

[0031] In some embodiments, the bubbler compressed air storage tank 1 is connected to a pressure gauge 4, and the pressure gauge 4 is connected to the control system.

[0032] Specifically, the control system monitors the gas pressure in the bubbler compressed air storage tank 1 in real time through the pressure gauge 4.

[0033] In some embodiments, a pressure transmitter 7 is provided between the pressure gauge 4 and the control system.

[0034] Specifically, the pressure gauge 4 detects the pressure of the bubbler compressed air storage tank 1, and the pressure information detected by the pressure gauge 4 is converted into a standard electrical signal through the pressure transmitter 7 and uploaded to the control system. The pressure transmitter 7 can be a balanced type, a capacitive type, an inductive type, a strain type, a frequency type, etc.

[0035] In some embodiments, the control system is a PLC control system 3. Using the PLC control system 3 as the control system of this solution, the control of the system can be realized reliably and efficiently.

[0036] In some embodiments, the control valve is a nitrogen pressure maintaining control valve 6, and a first check valve 8 is provided between the nitrogen pressure maintaining control valve 6 and the bubbler compressed air storage tank 1.

[0037] Specifically, the control system controls the nitrogen pressure-maintaining control valve 6 to control the nitrogen cylinder 2 to supply external gas to the bubbler compressed air storage tank 1. The first check valve 8 between the nitrogen pressure-maintaining control valve 6 and the bubbler compressed air storage tank 1 prevents the gas in the bubbler compressed air storage tank 1 from flowing back to the nitrogen cylinder 2.

[0038] In some embodiments, the control system is connected to an alarm 5. When the pressure gauge 4 detects abnormal pressure in the bubbler compressed air storage tank 1, the signal of the abnormal pressure is converted into a standard electrical signal through the pressure transmitter 7 and uploaded to the PLC control system, and the PLC control system issues an alarm through the alarm 5.

[0039] In some embodiments, a compressed air inlet control valve 9 is provided on the gas station inlet pipeline. The compressed air inlet control valve 9 is connected to the control system, and a second check valve 10 is provided between the bubbler compressed air storage tank 1 and the compressed air inlet control valve 9.

[0040] Specifically, the control system controls the gas station to fill the bubbler compressed air storage tank 1 with compressed air according to the gas pressure in the bubbler compressed air storage tank 1. The second check valve 10 prevents the gas in the bubbler compressed air storage tank 1 from flowing back to the gas station.

[0041] In some embodiments, a safety relief valve 11 is provided at the top of the bubbler compressed air storage tank 1. The safety relief valve 11 is provided to ensure the balance of the gas pressure in the bubbler compressed air storage tank 1, and the bubbler compressed air storage tank 1 can be relieved through the safety relief valve 11 when it needs to be relieved.

[0042] In some embodiments, a drain valve 12 is provided at the bottom of the bubbler compressed air storage tank 1. Through the drain valve 12, the dirt, impurities, etc. in the bubbler compressed air storage tank 1 can be quickly discharged to ensure the safe operation of the system.

[0043] In some embodiments, the bubbler compressed air storage tank 1 is connected to the bubbler through an outlet valve 13. An outlet valve 13 is provided at the outlet of the bubbler compressed air storage tank 1 to adjust and control the gas flow in the bubbler compressed air storage tank 1 to achieve the purpose of flow regulation. And the outlet valve 13 can also prevent the reverse flow of gas, thereby avoiding the damage to the system caused by the reverse flow of gas.

[0044] Based on the above description, the working process of the embodiment of the pressure loss protection device for the glass furnace bubbler of this solution is as follows:

[0045] When the pressure gauge 4 detects that the pressure of the bubbler compressed air storage tank 1 is low, the pressure transmitter 7 uploads the information to the PLC control system 3; the PLC control system 3 alarms the alarm 5; the PLC control system 3 opens the compressed air inlet control valve 9 wide; when the PLC control system 3 opens the compressed air inlet control valve 9 to 90% but the pressure of the bubbler compressed air storage tank 1 still cannot be maintained normally, the PLC control system 3 opens the nitrogen pressure maintaining control valve 6 and is supplied by the nitrogen cylinder 2; the PLC control system 3 controls the opening of the nitrogen pressure maintaining control valve 6 according to the pressure detected by the pressure gauge 4 until the pressure returns to normal.

[0046] The pressure loss protection device of the glass furnace bubbler in this solution provides an external source gas in time when the bubbler has a compressed air supply interruption and pressure loss, ensuring the normal operation of the bubbler. And through on-line pressure detection and timely alarm, it ensures the timely handling of accidents.

[0047] So far, the embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed here based on the above description.

[0048] Although some specific embodiments of the present application have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be equivalently replaced without departing from the scope and spirit of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. And these modifications, changes or combinations do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application and should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A pressure loss protection device for a glass furnace bubbler, comprising a control system and a bubbler compressed air storage tank (1) connected to the gas station inlet pipeline, characterized in that The bubbler compressed air storage tank (1) is connected to a nitrogen gas cylinder (2) through a control valve, and the control valve is connected to the control system so that under the control of the control system, gas can be injected into the bubbler compressed air storage tank from the nitrogen gas cylinder to maintain the pressure in the bubbler compressed air storage tank.

2. The bubbling device pressure loss protection device for a glass furnace according to claim 1, wherein The bubbler compressed air storage tank (1) is connected to a pressure gauge (4), and the pressure gauge (4) is connected to the control system.

3. The bubbling device pressure loss protection device for glass furnace according to claim 2, characterized in that, A pressure transmitter (7) is provided between the pressure gauge (4) and the control system.

4. The bubbling device pressure loss protection device for glass furnaces according to claim 3, characterized in that, The control system is a PLC control system (3).

5. The bubbling device pressure loss protection device for glass furnace according to claim 4, characterized in that, The control valve is a nitrogen pressure maintaining control valve (6), and a first check valve (8) is provided between the nitrogen pressure maintaining control valve (6) and the bubbler compressed air storage tank (1).

6. The pressure loss protection device for the bubbler of the glass furnace according to claim 5, characterized in that, The control system is connected to an alarm (5).

7. The bubbler underpressure protection device for a glass furnace according to any one of claims 1-5, characterized in that, A compressed air inlet control valve (9) is provided on the gas station inlet pipeline, and the compressed air inlet control valve (9) is connected to the control system. A second check valve (10) is provided between the bubbler compressed air storage tank (1) and the compressed air inlet control valve (9).

8. The bubbling device pressure loss protection device for a glass furnace according to claim 7, characterized in that, A safety relief valve (11) is provided at the top of the bubbler compressed air storage tank (1).

9. The bubbling device pressure loss protection device for glass furnace according to claim 8, characterized in that, A drain valve (12) is provided at the bottom of the bubbler compressed air storage tank (1).

10. The bubbling device pressure loss protection device for glass furnace according to claim 9, characterized in that, The bubbler compressed air storage tank (1) is connected to a bubbler through an outlet valve (13).

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