Device for stabilizing pressure in heat-resistant glass production kiln

Abstract

The utility model provides a stabilizing device for pressure in a heat-resistant glass production kiln, which belongs to the field of glass production and comprises a supporting table, a pressure stabilizing structure comprises a fan, a connecting pipe is mounted at the air inlet end of the fan, a U-shaped pipe is mounted on the connecting pipe, a thick flow guide pipe and a thin flow guide pipe are mounted at the end of the U-shaped pipe respectively, and a pressure stabilizing device is mounted on the supporting table. A first butterfly valve is installed on the thick flow guide pipe, a second butterfly valve is installed on the thin flow guide pipe, the first butterfly valve is opened, the draught fan works to enable the pressure of the kiln at the high temperature to return to be near the micro-positive pressure, the first butterfly valve is closed, the second butterfly valve is opened, and the draught fan works to enable the pressure of the kiln to be finely adjusted. According to the pressure stabilizing structure, the opening and closing states of the first butterfly valve and the second butterfly valve can be flexibly adjusted under different working conditions, and the working state of the fan is combined, so that the internal pressure of the kiln can be quickly and finely adjusted, and the stable operation of the kiln in a high-temperature working environment is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to glass production technical field especially relates to a kind of stable device of heat resistance glass production kiln pressure. BACKGROUND

[0002] In glass production, the following two factors mainly affect the kiln pressure:

[0003] (1) The kiln temperature needs to be controlled in a high-temperature environment of thousands of degrees Celsius to melt the raw materials into uniform and bubble-free glass liquid. Such a high-temperature environment often causes some raw materials to produce a large amount of gas when melting in the kiln, resulting in large fluctuations in the glass liquid level in the kiln, making the pressure in the kiln unstable, and further interfering with the production process and affecting the quality of the glass liquid.

[0004] (2) Glass melting furnaces differ greatly in structure due to the different heat sources used, such as flame melting furnaces, electric melting furnaces, and flame-electric melting furnaces, which have different structures. Moreover, there is a gas space between the glass liquid and the internal top side wall of the production kiln, which is affected by the amount of glass liquid entering, causing the pressure in the gas space of the glass kiln to change frequently.

[0005] Currently, the commonly used glass kiln pressure control system in China works by comparing the pressure sensor and the pressure set value after the controller collects them, and then outputting a control signal. The control signal drives the induced draft fan to change the power and adjusts the gate opening to achieve stable pressure in the melting furnace. However, the series structure of this induced draft fan and gate in the exhaust flue makes it difficult to achieve high stability of pressure control. Therefore, the present application proposes a stable device for heat resistance glass production kiln pressure. SUMMARY

[0006] In view of the deficiencies in the prior art, the present utility model provides a stable device for heat resistance glass production kiln pressure.

[0007] The embodiment of the present utility model provides a stable device for heat resistance glass production kiln pressure, comprising:

[0008] A support table is provided, and a glass production kiln is installed on the support table. A pressure detection device is installed on the glass production kiln.

[0009] A pressure stabilizing structure is provided, which includes a fan. A connecting pipe is installed at the air inlet end of the fan. A U-shaped pipe is installed on the connecting pipe. A flow guide coarse pipe and a flow guide fine pipe are respectively installed at the ends of the U-shaped pipe. A first butterfly valve is installed on the flow guide coarse pipe. A second butterfly valve is installed on the flow guide fine pipe. When the first butterfly valve is opened and the fan is working, the kiln pressure under high temperature returns to near micro-positive pressure. When the first butterfly valve is closed and the second butterfly valve is opened, the kiln pressure is finely adjusted by the fan working.

[0010] Further, the pressure detection device is a pressure sensor.

[0011] Further, the U-shaped pipe is connected with the coarse flow guide pipe and the fine flow guide pipe through flanges and bolts.

[0012] Further, the heat recovery structure comprises a water tank installed on the support table, a serpentine pipe is installed in the water tank, and the two ends of the serpentine pipe are connected with an inlet pipe and an outlet pipe respectively, and the inlet pipe is connected with the air exhaust end of the fan.

[0013] Further, the circulating mechanism comprises a water pump installed on the water tank, and a water inlet pipe and a water outlet pipe are installed at the water inlet end and the water outlet end of the water pump respectively and connected with the water tank.

[0014] Further, the first butterfly valve and the second butterfly valve are electric butterfly valves.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The pressure stabilizing structure can realize rapid and fine adjustment of the internal pressure of the kiln by flexibly adjusting the opening and closing states of the first butterfly valve and the second butterfly valve under different working conditions and in combination with the working state of the fan, and ensure stable operation of the kiln in a high-temperature working environment. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The drawing is a structural schematic view of the internal pressure stabilizing device of the heat-resistant glass production kiln.

[0018] Figure 2 The drawing is a schematic view of the fan in the internal pressure stabilizing device of the heat-resistant glass production kiln.

[0019] Figure 3 The drawing is a schematic view of the U-shaped pipe in the internal pressure stabilizing device of the heat-resistant glass production kiln.

[0020] Figure 4 The drawing is a schematic view of the inside of the water tank in the internal pressure stabilizing device of the heat-resistant glass production kiln.

[0021] In the above drawings: 1 support table, 2 glass production kiln, 3 pressure detection device, 4 fan, 5 U-shaped pipe, 6 inlet pipe, 7 water tank, 8 outlet pipe, 9 water pump, 10 water inlet pipe, 11 water outlet pipe, 12 connecting pipe, 13 coarse flow guide pipe, 14 first butterfly valve, 15 fine flow guide pipe, 16 second butterfly valve, 17 serpentine pipe. DETAILED DESCRIPTION

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0023] like Figures 1-4 As shown in the figure, this utility model embodiment proposes a pressure stabilization device for a heat-insulating glass production kiln, comprising:

[0024] Support platform 1, glass production kiln 2 is installed on support platform 1, pressure detection device 3 is installed on glass production kiln 2, pressure detection device 3 is a pressure sensor, which can be a high-precision pressure sensor with 0.1%, and the pressure measurement range is as small as possible, such as 0-100Pa (gauge pressure).

[0025] Example 1

[0026] A pressure stabilizing structure is a system used to regulate and control the internal pressure of a kiln, designed to ensure that the kiln pressure is maintained near a slight positive pressure under high-temperature operating conditions, thereby guaranteeing production safety and efficiency. This pressure stabilizing structure specifically includes the following components and their connection methods:

[0027] The main structure includes a blower 4, which serves as the primary power source for driving airflow circulation and regulating kiln pressure. A connecting pipe 12 is securely installed at the air inlet of the blower 4. This connecting pipe 12 guides the airflow inside the kiln to the blower 4, ensuring smooth airflow.

[0028] A U-shaped pipe 5 is installed on the connecting pipe 12. The two ends of the U-shaped pipe 5 are securely connected to the coarse guide pipe 13 and the fine guide pipe 15 through the cooperation of flanges and bolts. This connection method not only ensures the sealing of the connection, but also facilitates later maintenance and replacement.

[0029] A first butterfly valve 14 is installed on the guide pipe 13. The main function of this valve is to control the flow of large flow. When the internal pressure of the kiln needs to return to near a slightly positive pressure quickly, the first butterfly valve 14 is opened, the blower 4 is turned on, and a large amount of airflow enters the kiln through the guide pipe 13 to achieve rapid pressure regulation.

[0030] A second butterfly valve 16 is installed on the guide tube 15. Both the first butterfly valve 14 and the second butterfly valve 16 are electric butterfly valves. The second butterfly valve 16 is used to finely adjust the pressure inside the kiln. When the kiln pressure needs to be adjusted more precisely, the first butterfly valve 14 is closed and the second butterfly valve 16 is opened. The blower 4 continues to work, but at this time the airflow enters the kiln through the guide tube 15, achieving more precise pressure control.

[0031] With this design, the pressure stabilizing structure can quickly and precisely adjust the internal pressure of the kiln under different working conditions by flexibly adjusting the opening and closing states of the first butterfly valve 14 and the second butterfly valve 16, combined with the working state of the blower 4, thus ensuring the stable operation of the kiln in a high-temperature working environment.

[0032] Wherein, the first butterfly valve 14, the second butterfly valve 16, the fan 4, the pressure detection device 3 are connected with the industrial computer, the industrial computer can control the rotating speed of the fan 4 according to the pressure feedback by the pressure detection device 3, this is the existing PLC technology.

[0033] Embodiment 2

[0034] Still include heat recovery structure, heat recovery structure includes the water tank 7 installed on the support platform 1, the water tank 7 has upper cover, the fan 4 is installed on the upper cover, the upper cover has not shown in the drawing water pipe;The water tank 7 is installed with the serpentine pipe 17, the serpentine pipe 17 is connected with the inlet pipe 6, the exhaust pipe 8 respectively at both ends, the inlet pipe 6 is connected with the exhaust end of the fan 4;The air with heat is transported to the inlet pipe 6 by the fan 4, then flows to the serpentine pipe 17, the water tank 7 is clear water, the clear water exchanges heat with the heat in the serpentine pipe 17, realizes heat recovery, the air after heat exchange is discharged through the exhaust pipe 8.

[0035] Embodiment 3

[0036] Still include circulating mechanism, circulating mechanism includes the water pump 9 installed on the water tank 7, the water inlet and the water outlet of the water pump 9 are installed with water inlet pipe 10, water outlet pipe 11 respectively, water inlet pipe 10, water outlet pipe 11 are connected with the water tank 7;Because the serpentine pipe 17 is stationary, cannot exchange heat with water in other positions, therefore the water pump 9 works with water inlet pipe 10, water outlet pipe 11 can realize the circulating flow of the water in the water tank 7, to better exchange heat with the heat in the serpentine pipe 17.

[0037] Temperature meter and drain pipe (not shown in the drawing) can be installed on the water tank 7, the control valve is installed on the drain pipe, when the temperature reaches the temperature of the serpentine, open the control valve and discharge hot water through the drain pipe.

[0038] Finally, it is explained that the above embodiment is only used to illustrate the technical scheme of the utility model and is not limited, although the utility model is described in detail with reference to the preferred embodiment, those skilled in the art should understand that the technical scheme of the utility model can be modified or replaced, without departing from the purpose and scope of the utility model technical scheme, it should be covered in the claim range of the utility model.

Claims

1. A device for stabilizing pressure inside a heat-insulating glass production kiln, characterized in that, include: A support platform (1) is provided, on which a glass production kiln (2) is installed, and on which a pressure detection device (3) is installed; Pressure stabilizing structure; the pressure stabilizing structure includes a fan (4), a connecting pipe (12) is installed at the air inlet end of the fan (4), a U-shaped pipe (5) is installed on the connecting pipe (12), a guide pipe (13) and a guide pipe (15) are respectively installed at the ends of the U-shaped pipe (5), a first butterfly valve (14) is installed on the guide pipe (13), and a second butterfly valve (16) is installed on the guide pipe (15). When the first butterfly valve (14) is opened, the fan (4) works to bring the kiln pressure at high temperature back to near a slightly positive pressure. When the first butterfly valve (14) is closed and the second butterfly valve (16) is opened, the fan (4) works to finely adjust the kiln pressure.

2. The pressure stabilizing device in a heat-insulating glass production kiln according to claim 1, characterized in that, in: The pressure detection device (3) is a pressure sensor.

3. The pressure stabilizing device in a heat-insulating glass production kiln according to claim 1, characterized in that, in: The U-shaped tube (5) is connected to the thick guide tube (13) and the thin guide tube (15) by means of flanges and bolts.

4. The pressure stabilizing device in a heat-insulating glass production kiln according to claim 1, characterized in that, in: It also includes a heat recovery structure, which includes a water tank (7) installed on a support platform (1). A serpentine pipe (17) is installed inside the water tank (7). The two ends of the serpentine pipe (17) are respectively connected to an inlet pipe (6) and an outlet pipe (8). The inlet pipe (6) is connected to the exhaust end of the fan (4).

5. The pressure stabilizing device in a heat-insulating glass production kiln according to claim 1, characterized in that, in: It also includes a circulation mechanism, which includes a water pump (9) installed on the water tank (7). The water pump (9) has an inlet pipe (10) and an outlet pipe (11) installed at its inlet and outlet ends, respectively. The inlet pipe (10) and outlet pipe (11) are connected to the water tank (7).

6. The pressure stabilizing device inside a heat-insulating glass production kiln according to claim 1, characterized in that, in: The first butterfly valve (14) and the second butterfly valve (16) are electric butterfly valves.

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