Novel micro-bubble pressure control suppression device for electric melting furnace

Abstract

The utility model discloses a novel micro-bubble pressure control suppression device for an electric melting furnace, which relates to the technical field of power electronics and comprises a supporting plate, a reactive power compensation device is arranged at the top end of the supporting plate, a connecting plate is arranged in the middle of the bottom end of the reactive power compensation device, and a heat absorption mechanism is arranged in the middle of the connecting plate. One end of the heat absorption mechanism is connected with a water inlet pipe, and the other end is connected with a water outlet pipe. According to the utility model, the reactive compensation device is introduced, so that the influence of external voltage fluctuation on the internal temperature of the electric melting furnace is effectively reduced, the current output in the furnace is more stable, and the stability of the temperature in the furnace is further improved; the number of generated microbubbles in the forming process of the molten glass is effectively controlled, the internal quality of the glass is improved, part of heat can be recycled through a water cooling mode, energy waste is reduced, and meanwhile the thermal load of a reactive power compensation device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power electronics, in particular to a novel micro-bubble pressure control and suppression device for an electric melting furnace. Background Art

[0002] High borosilicate float glass is made by melting the glass by heating it inside the glass, which is conductive at high temperatures, and is processed through advanced production technology. It is a special glass material with low expansion rate, high temperature resistance, high strength, high hardness, high light transmittance and high chemical stability. In its mass production process, molten glass is generated by internal heating, and the molten glass is stirred evenly and then formed to obtain finished glass.

[0003] The current electricity is a 10kV high-voltage incoming line, which is drawn from a nearby substation and stepped down by a transformer to supply power to the load. Since the 10kV voltage of the substation fluctuates regularly day and night, and the kiln outputs a constant current, the temperature in the kiln is unstable, and the molten glass contains microbubbles that vary in number during its formation, causing problems with the glass quality. Therefore, a new type of microbubble pressure control and suppression device for electric melting furnaces is urgently needed, which can control the 10kV voltage fluctuation within 100V.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a novel micro-bubble pressure control and suppression device for an electric melting furnace to overcome the above-mentioned technical problems existing in the existing related technology.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] A novel microbubble pressure control and suppression device for an electric melting furnace comprises a support plate, a reactive power compensation device is arranged at the top of the support plate, a connecting plate is arranged at the middle of the bottom end of the reactive power compensation device, and a heat absorption mechanism is arranged at the middle of the connecting plate; one end of the heat absorption mechanism is connected to a water inlet pipe, and the other end of the heat absorption mechanism is connected to a water outlet pipe.

[0008] Furthermore, in order to reduce the thermal load of the reactive compensation device, the heat absorbing mechanism includes a first heat absorbing plate arranged in the middle of the connecting plate, a second heat absorbing plate is arranged at the bottom end of the first heat absorbing plate, a water channel is formed between the first heat absorbing plate and the second heat absorbing plate, and plugs are arranged at both ends of the water channel; water inlet holes and water outlet holes are respectively arranged at the bottom of both ends of the water channel, a first joint is arranged between the water inlet hole and the water inlet pipe, and a second joint is arranged between the water outlet hole and the water outlet pipe.

[0009] Further, in order to ensure that the water channel does not leak, a first sealing strip is provided on one side of the water channel and between the first heat absorption plate and the second heat absorption plate, and a second sealing strip is provided on the other side of the water channel and between the first heat absorption plate and the second heat absorption plate; the first heat absorption plate and the second heat absorption plate are connected by bolts, and the number of bolts is at least four; the first heat absorption plate and the second heat absorption plate are positioned by positioning pins, and the number of positioning pins is at least two.

[0010] Further, in order to reduce the influence of external heat on the heat absorption mechanism, a heat insulation plate is provided on the outside of the heat absorption mechanism and at the bottom end of the support plate, and a protection plate is provided on the top of the heat insulation plate; the heat insulation plate includes a side plate provided at the bottom end of the support plate, and a honeycomb core is provided inside the side plate.

[0011] The beneficial effects of the present utility model are as follows:

[0012] (1) By introducing the reactive power compensation device, the present utility model effectively reduces the influence of external voltage fluctuations on the internal temperature of the electric melting furnace, makes the current output in the furnace more stable, and further improves the stability of the temperature in the furnace. Due to the improvement of the temperature stability in the furnace, the number of microbubbles generated during the formation of molten glass is effectively controlled, and the internal quality of the glass is improved.

[0013] (2) By providing the heat absorption mechanism, part of the heat can be recovered through the water cooling method, energy waste can be reduced, and at the same time, the heat load of the reactive power compensation device is also reduced; by providing the heat insulation plate, excellent heat insulation effect is provided through the design of the honeycomb core, the influence of external heat on the heat absorption mechanism is reduced, and the structural stability and durability are excellent. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is a structural schematic diagram of a new type of electric melting furnace microbubble pressure control and suppression device according to an embodiment of the present utility model;

[0016] Figure 2 is a structural schematic diagram of the connection plate in a new type of electric melting furnace microbubble pressure control and suppression device according to an embodiment of the present utility model;

[0017] Figure 3 is a structural schematic diagram of the heat absorption mechanism in a new type of electric melting furnace microbubble pressure control and suppression device according to an embodiment of the present utility model;

[0018] Figure 4 It is a three-dimensional assembly drawing of the heat absorption mechanism in a new type of electrofusion furnace microbubble pressure control and suppression device according to an embodiment of the present invention;

[0019] Figure 5 It is a three-dimensional assembly drawing of the heat absorption mechanism in a new type of electrofusion furnace microbubble pressure control and suppression device according to an embodiment of the present invention from another angle;

[0020] Figure 6 It is a structural schematic diagram of the second heat absorption plate in a new type of electrofusion furnace microbubble pressure control and suppression device according to an embodiment of the present invention;

[0021] Figure 7 It is an internal structural schematic diagram of the heat insulation plate in a new type of electrofusion furnace microbubble pressure control and suppression device according to an embodiment of the present invention.

[0022] In the figure:

[0023] 1. Support plate; 2. Reactive power compensation device; 3. Connecting plate; 4. Heat absorption mechanism; 401. First heat absorption plate; 402. Second heat absorption plate; 403. Water channel; 404. Plug; 405. Water inlet hole; 406. Water outlet hole; 407. First joint; 408. Second joint; 409. First sealing strip; 410. Second sealing strip; 411. Bolt; 412. Positioning pin; 5. Water inlet pipe; 6. Water outlet pipe; 7. Heat insulation plate; 701. Side plate; 702. Honeycomb core; 8. Protection plate. Specific embodiments

[0024] To further illustrate the embodiments, the present invention provides drawings, which are part of the disclosure of the present invention. They are mainly used to illustrate the embodiments and can be used to explain the operating principle of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0025] According to an embodiment of the present invention, a new type of electrofusion furnace microbubble pressure control and suppression device is provided.

[0026] Now, the present invention will be further described in conjunction with the drawings and specific embodiments. As Figure 1-7 shown, the new type of electrofusion furnace microbubble pressure control and suppression device according to an embodiment of the present invention includes a support plate 1. A reactive power compensation device 2 is arranged at the top end of the support plate 1. A connecting plate 3 is arranged in the middle at the bottom end of the reactive power compensation device 2. A heat absorption mechanism 4 is arranged in the middle of the connecting plate 3. One end of the heat absorption mechanism 4 is connected to a water inlet pipe 5, and the other end of the heat absorption mechanism 4 is connected to a water outlet pipe 6.

[0027] Among them, the reactive power compensation device 2 is mainly used to regulate and compensate the reactive power in the power grid, and reduce the influence of voltage fluctuations on the internal temperature of the electric melting furnace. The reactive power compensation device 2 monitors the voltage fluctuations in the power grid in real time. According to the detected voltage fluctuations, the reactive power compensation device 2 compensates the reactive power through internal capacitors or reactors to smooth the voltage fluctuations. After compensation, the voltage fluctuations are reduced, and the current output in the furnace is more stable, thereby maintaining the temperature stability in the furnace. Taking the reactive power and bus voltage on the 10kV side as the control targets, the reactive power compensation device 2 (SVG) can dynamically track the changes in the power quality of the power grid and dynamically adjust the reactive power output according to the changes. The dynamic response time is not more than 10ms. These improve the product quality and enhance the market competitiveness of the products. The voltage can be stabilized within a fluctuation range of 100V, solving the problems of poor melting efficiency and low quality of the existing glass melting. The compensation range of the reactive power compensation device 2 is -3Mvar to +3Mvar, and Mvar is the unit of reactive power.

[0028] With the help of the above solution, the utility model effectively reduces the influence of external voltage fluctuations on the internal temperature of the electric melting furnace by introducing the reactive power compensation device 2, making the current output in the furnace more stable, and then improving the temperature stability in the furnace. Due to the improvement of the temperature stability in the furnace, the number of microbubbles generated during the formation of molten glass is effectively controlled, improving the internal quality of the glass.

[0029] In one embodiment, for the above-mentioned heat absorption mechanism 4, the heat absorption mechanism 4 includes a first heat absorption plate 401 disposed in the middle of the connecting plate 3. The bottom end of the first heat absorption plate 401 is provided with a second heat absorption plate 402. A water channel 403 is formed between the first heat absorption plate 401 and the second heat absorption plate 402, and plug heads 404 are provided at both ends of the water channel 403. Water inlet holes 405 and water outlet holes 406 are respectively provided at the bottom ends of both ends of the water channel 403. A first joint 407 is provided between the water inlet hole 405 and the water inlet pipe 5, and a second joint 408 is provided between the water outlet hole 406 and the water outlet pipe 6. A first sealing strip 409 is provided on one side of the water channel 403 and between the first heat absorption plate 401 and the second heat absorption plate 402, and a second sealing strip 410 is provided on the other side of the water channel 403 and between the first heat absorption plate 401 and the second heat absorption plate 402. The first heat absorption plate 401 and the second heat absorption plate 402 are connected by bolts 411, and the number of bolts 411 is at least four. The first heat absorption plate 401 and the second heat absorption plate 402 are positioned by positioning pins 412, and the number of positioning pins 412 is at least two. Thus, through the water cooling method, part of the heat can be recovered, energy waste can be reduced, the heat load of the reactive power compensation device 2 can be reduced, the overall energy efficiency ratio can be improved, and it can be improved.

[0030] The working principle of the heat absorption mechanism 4 is as follows: When the reactive power compensation device 2 operates, the heat generated is conducted to the heat absorption mechanism 4. Cooling water enters the water channel 403 of the heat absorption mechanism through the water inlet pipe 5, absorbs heat, and then flows out through the water outlet pipe 6. The first sealing strip 409 and the second sealing strip 410 ensure that the water channel 403 does not leak; the bolts 411 and the positioning pins 412 ensure the structural stability of the heat absorption mechanism.

[0031] In one embodiment, for the above-mentioned heat absorption mechanism 4, a heat insulation plate 7 is provided on the outer side of the heat absorption mechanism 4 and at the bottom end of the support plate 1, and a protection plate 8 is provided on the top of the heat insulation plate 7; the heat insulation plate 7 includes a side plate 701 provided at the bottom end of the support plate 1, and a honeycomb core 702 is provided inside the side plate 701. Thus, through the design of the honeycomb core 702, excellent heat insulation effect is provided, the influence of external heat on the heat absorption mechanism 4 is reduced, and the structural stability and durability are excellent.

[0032] The working principle of the heat insulation plate 7 is as follows: The honeycomb core 702 is filled inside the side plate 701, and this structure can effectively isolate heat conduction. The honeycomb structure not only has a good heat insulation effect, but also improves the mechanical strength and durability of the heat insulation plate.

[0033] The honeycomb core 702 is composed of multiple small honeycomb-shaped units, and these units contain air, which is a good heat insulator. The air layer effectively blocks heat transfer and reduces the influence of external high temperature on the heat absorption mechanism 4.

[0034] To facilitate the understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in the actual process will be described in detail below.

[0035] In actual application, the reactive power compensation device 2 dynamically adjusts the reactive power by real-time monitoring of the voltage fluctuation of the power grid, reducing the influence of voltage fluctuation on the internal temperature of the kiln. This can ensure the stable current output in the kiln, thereby maintaining the constant temperature in the kiln and avoiding glass quality problems caused by temperature fluctuations. The heat absorption mechanism 4 absorbs and conducts the heat generated by the reactive power compensation device 2 and other equipment through the internal water cooling circulation method. The heat insulation plate 7 effectively isolates the external high temperature by using the honeycomb core structure.

[0036] In summary, by introducing the reactive power compensation device 2, the present utility model effectively reduces the impact of external voltage fluctuations on the internal temperature of the electric melting furnace, making the current output inside the furnace more stable, thereby improving the stability of the temperature inside the furnace. Due to the improved stability of the temperature inside the furnace, the number of microbubbles generated during the formation of molten glass is effectively controlled, enhancing the internal quality of the glass. By providing the heat absorption mechanism 4, part of the heat can be recovered through the water cooling method, reducing energy waste and also reducing the heat load of the reactive power compensation device 2. By providing the heat insulation board 7, through the design of the honeycomb core 702, excellent heat insulation effect is provided, reducing the impact of external heat on the heat absorption mechanism 4, and the structure has excellent stability and durability.

[0037] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A novel microbubble pressure control and suppression device for an electric melting furnace, comprising a support plate (1), characterized in that: A reactive power compensation device (2) is arranged at the top of the support plate (1), a connecting plate (3) is arranged at the middle of the bottom of the reactive power compensation device (2), and a heat absorption mechanism (4) is arranged at the middle of the connecting plate (3); One end of the heat absorbing mechanism (4) is connected to a water inlet pipe (5), and the other end of the heat absorbing mechanism (4) is connected to a water outlet pipe (6); The heat absorbing mechanism (4) comprises a first heat absorbing plate (401) arranged in the middle of the connecting plate (3); a second heat absorbing plate (402) is arranged at the bottom end of the first heat absorbing plate (401); a water channel (403) is formed between the first heat absorbing plate (401) and the second heat absorbing plate (402); and plugs (404) are arranged at both ends of the water channel (403); The bottoms of both ends of the water channel (403) are respectively provided with a water inlet hole (405) and a water outlet hole (406); a first joint (407) is provided between the water inlet hole (405) and the water inlet pipe (5); and a second joint (408) is provided between the water outlet hole (406) and the water outlet pipe (6); A first sealing strip (409) is provided on one side of the water channel (403) and located between the first heat absorbing plate (401) and the second heat absorbing plate (402), and a second sealing strip (410) is provided on the other side of the water channel (403) and located between the first heat absorbing plate (401) and the second heat absorbing plate (402).

2. According to claim 1, a novel electric melting furnace microbubble pressure control and suppression device is characterized in that: The first heat absorbing plate (401) and the second heat absorbing plate (402) are connected via bolts (411), and the number of the bolts (411) is at least four.

3. A novel electric melting furnace microbubble pressure control and suppression device according to claim 2, characterized in that: The first heat absorbing plate (401) and the second heat absorbing plate (402) are positioned by positioning pins (412), and the number of the positioning pins (412) is at least two.

4. A novel electric furnace microbubble pressure control and suppression device according to claim 1, characterized in that: A heat insulation board (7) is arranged outside the heat absorption mechanism (4) and at the bottom end of the support plate (1), and a protective plate (8) is arranged on the top of the heat insulation board (7).

5. A novel electric melting furnace microbubble pressure control and suppression device according to claim 4, characterized in that: The heat insulation board (7) comprises a side board (701) arranged at the bottom end of the support board (1), and a honeycomb core (702) is arranged inside the side board (701).

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