Automatic temperature control system for rolled glass forming passage

Abstract

The utility model discloses an automatic temperature control system for a rolled glass forming passage, which comprises three infrared sensors, a combustor, a combustion-supporting air system, a gas premixing system, a forming passage, a centralized control system, a signal cable and a signal control cable. The three infrared sensors are respectively connected with the centralized control system through signal cables, and the centralized control system is connected with the combustion-supporting air system through a signal control cable; the gas premixing system comprises a premixing passage, a group of mixers, a natural gas pipeline and a combustion-supporting air pipeline, the premixing passage and the natural gas pipeline are respectively connected with the group of mixers, and the combustion-supporting air pipeline is arranged at the bottom of the premixing passage. The device can solve the problem of automatic control of the temperature of the rolled glass forming passage, can realize online real-time monitoring, real-time early warning and alarming, can switch main equipment and standby equipment at proper time, and can effectively reduce the accident risk.

Description

Technical Field

[0001] The utility model relates to the technical field of rolled glass forming equipment, in particular to an automatic temperature control system for a rolled glass forming passage. Background Art

[0002] Rolled glass refers to glass products that are pressed with patterned rollers during the cooling process of molten glass. The principle of rolled glass molding is to transform the molten glass into a solid product with a fixed shape. Molding must be carried out within a certain temperature range. This is a cooling process. The glass changes from a viscous liquid state to a plastic state, and then to a brittle solid state. There are many factors that affect the temperature of the glass liquid, especially in a multi-line production kiln. For example, the overall temperature control in the kiln, the size and length of the liquid flow in each branch channel, the change of kiln pressure, crystallization, the height of the flame-blocking brick, the pulling amount, the ambient temperature, etc. will affect the temperature of the glass liquid. If the temperature of the glass liquid at the flow outlet is high, the glass has good ductility, and the thickness of the pressed glass is thin, otherwise it is thick. However, if the temperature of the glass liquid is too high, it is easy to stick to the roller and wrap the roller, causing serious accidents; if the temperature is too low, the thickness cannot be pressed down. Therefore, the temperature fluctuation of the glass liquid should be controlled within a certain range to maintain the stability of the process.

[0003] Especially in the production process of rolled thin glass, the temperature requirements for the glass liquid overflowing from the forming channel are quite strict. Generally speaking, as the temperature decreases, the thickness changes to the thicker direction; while as the temperature increases, the thickness changes to the thinner direction. A large lateral temperature difference will result in a large lateral thickness tolerance of the original plate. In actual production, the lateral temperature is measured at three points according to the plate width. The measured temperature of the glass liquid at the overflow port is required to be controlled within ±5°C, and the lateral temperature difference on both sides is required to be controlled within the range of ±5°C, especially for the production of wide plate glass.

[0004] At present, automatic temperature control has not been fully applied in molding channels at home and abroad. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides an automatic temperature control system for a rolled glass forming passage to solve the problems raised in the above-mentioned background technology.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: an automatic temperature control system for a rolled glass forming passage, comprising an infrared sensor, a burner, a combustion-supporting air system, a gas premixing system, a forming passage, a centralized control system, a signal cable and a signal control cable, wherein three infrared sensors are provided, and the three infrared sensors are installed at the top of the forming passage, and the three infrared sensors are respectively connected to the centralized control system through signal cables, and the centralized control system is connected to the combustion-supporting air system through a signal control cable; the gas premixing system comprises a premixing passage, a mixer, a natural gas pipeline and a combustion-supporting air pipeline, and a group of mixers are provided, and the premixing passage and the natural gas pipeline are respectively connected to a group of mixers, and the combustion air pipeline is installed at the bottom of the premixing passage.

[0009] Preferably, a fan is provided inside the combustion-supporting air system, and the fan is connected to the premixing passage.

[0010] Preferably, the burners are provided in four groups, the four groups of burners are respectively installed in the front section and the rear section of the forming passage, and the four groups of burners are respectively connected to a group of mixers through pipelines.

[0011] (III) Beneficial effects

[0012] The utility model provides an automatic temperature control system for a rolling glass forming passage. It has the following beneficial effects:

[0013] This automatic temperature control system for rolled glass forming passage solves the problem of automatic temperature control of rolled glass forming passage. The system can monitor the temperature of the rolled glass forming passage according to the set temperature requirements, and feed back the signal to the centralized control system, which will automatically control the fan and premixing system to adjust the temperature of the rolled glass forming passage. The fan system has complete fault monitoring means, online real-time monitoring, real-time early warning and alarm, and timely switching of main and standby equipment, which can effectively reduce the risk of accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the overall layout principle diagram of the utility model;

[0015] Figure 2 It is a top view of the overall arrangement of the utility model;

[0016] Figure 3 It is a side view of the overall arrangement of the utility model.

[0017] In the figure, 1. infrared sensor; 2. combustion-supporting air system; 3. gas premixing system; 4. signal control cable; 5. mixer; 6. burner; 7. forming passage; 8. natural gas pipeline; 9. combustion-supporting air pipeline; 10. premixing passage; 11. centralized control system; 12. signal cable; 13. signal control cable. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3 The embodiment of the utility model provides a technical solution: an automatic control system for the temperature of a rolled glass forming passage, comprising an infrared sensor 1, a burner 6, a combustion-supporting air system 2, a gas premixing system 3, a forming passage 7, a centralized control system 11, a signal cable 12 and a signal control cable 13. The infrared sensors 1 are provided with three, and the three infrared sensors 1 are installed on the top of the forming passage 7. The three infrared sensors 1 are connected to the centralized control system 11 through signal cables 12 respectively, and the centralized control system 11 is connected to the combustion-supporting air system 2 through the signal control cable 13; the centralized control system 11 is provided with a complete set of control technologies and monitoring interfaces for combustion-supporting air system operation monitoring, master / standby automatic switching, and centralized operation management. The centralized control system 11 collects signals from the infrared sensor 1 through the signal cable 12, and then automatically adjusts the gas premixing system 3 and the fan 4 through the signal control cable 13, and monitors the working conditions of the fan 4 and the gas premixing system 3 through the signal control cable 13.

[0020] The gas premixing system 3 includes a premixing passage 10, a mixer 5, a natural gas pipeline 8 and a combustion air pipeline 9. The mixer 5 is provided in a group. The premixing passage 10 and the natural gas pipeline 8 are respectively connected to a group of mixers 5. The combustion air pipeline 9 is installed at the bottom of the premixing passage 10. Every four burners 6 share a mixer 5, two pairs of the front section use one, and two pairs of the rear section use another. It can be regulated according to the different temperature requirements before and after the forming passage 7. The combustion air of the premixing passage 10 is divided into two branches, each branch is provided with a flow meter and an electric flow regulating valve, and the flow regulating valve adjusts the combustion air volume according to the temperature of the forming passage 7. The natural gas and the combustion air are mixed in an appropriate proportion through the mixer 5, and the mixed gas is sent to the forming passage 7 for combustion through a flameless spray gun.

[0021] Furthermore, a fan 4 is provided inside the combustion-supporting air system 2, and the fan 4 is connected to the premixing passage 10. The fan 4 is provided with a common fan and a standby fan, and can be fully automatically switched through the centralized control system 11. The fan 4 is used to control the size of combustion.

[0022] Differently, the burners 6 are provided with four groups, and the four groups of the burners 6 are respectively installed at the front section and the rear section of the forming passage 7, and the four groups of the burners 6 are respectively connected to a group of mixers 5 through pipelines.

[0023] Working principle: During operation, the centralized control system 11 collects the signal from the infrared sensor 1 through the signal cable 12, and then automatically adjusts the gas premixing system 3 and the fan 4 through the signal control cable 13, while monitoring the working conditions of the fan 4 and the gas premixing system 3 through the signal control cable 13.

[0024] The utility model includes 1, infrared sensor; 2, combustion-supporting air system; 3, gas premixing system; 4, signal control cable; 5, mixer; 6, burner; 7, molding passage; 8, natural gas pipeline; 9, combustion-supporting air pipeline; 10, premixing passage; 11, centralized control system; 12, signal cable; 13, signal control cable, all of which are universal standard parts or parts known to technical personnel in this field, and their structures and principles can be known to technical personnel in this field through technical manuals or through conventional experimental methods. The problem solved by the utility model is that the existing molding passage has not yet fully utilized automatic temperature control. The utility model can solve the problem of automatic temperature control of the rolled glass molding passage through the combination of the above-mentioned components, and can also realize online real-time monitoring, real-time early warning and alarm, and timely switching of main and standby equipment, which can effectively reduce the risk of accidents.

[0025] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0026] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An automatic temperature control system for a rolled glass forming passage, characterized in that: The invention comprises an infrared sensor (1), a burner (6), a combustion-supporting air system (2), a gas premixing system (3), a forming passage (7), a centralized control system (11), a signal cable (12) and a signal control cable (13), wherein three infrared sensors (1) are provided, the three infrared sensors (1) are installed on the top of the forming passage (7), the three infrared sensors (1) are respectively connected to the centralized control system (11) via the signal cables (12), and the centralized control system (11) is connected to the combustion-supporting air system (2) via the signal control cable (13); The gas premixing system (3) comprises a premixing passage (10), a mixer (5), a natural gas pipeline (8) and a combustion-supporting air pipeline (9), wherein the mixer (5) is provided with a group, the premixing passage (10) and the natural gas pipeline (8) are respectively connected to a group of mixers (5), and the combustion-supporting air pipeline (9) is installed at the bottom of the premixing passage (10).

2. The automatic temperature control system for the rolled glass forming passage according to claim 1, characterized in that: A fan (4) is provided inside the combustion-supporting air system (2), and the fan (4) is connected to the premixing passage (10).

3. The automatic temperature control system for the rolling glass forming passage according to claim 1, characterized in that: The burners (6) are provided in four groups, and the four groups of the burners (6) are respectively installed at the front section and the rear section of the forming passage (7), and the four groups of the burners (6) are respectively connected to a group of mixers (5) through pipelines.

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