Y-shaped exhaust device for photovoltaic sintering furnace
By designing a Y-shaped exhaust device and optimizing the exhaust channel structure, utilizing a detachable oil collection box and inclined pipe to divert exhaust gas, combined with an automatic fire damper, the risk of explosion caused by the backflow of condensed oil in exhaust gas in the photovoltaic sintering furnace was solved, achieving a safe and efficient exhaust effect.
Patent Information
- Application Number
- CN202423156439.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-20
AI Technical Summary
In the existing photovoltaic sintering furnace exhaust system, organic waste gas condenses into oil and flows back into the furnace body after adhering to the wall, which can easily lead to an explosion risk. Furthermore, the safety and efficiency of the existing exhaust device need to be improved.
Design a Y-type exhaust device, including a vertical pipe, a detachable oil collection box, a flame arrestor, an automatic fire damper, and an inclined pipe. By optimizing the exhaust channel structure, it increases exhaust gas diversion and safety monitoring, prevents condensed oil backflow, achieves automatic fire prevention, and ensures smooth exhaust.
It effectively prevents condensed oil from flowing back into the furnace body, avoids high-temperature exhaust gas mixing and explosion, improves exhaust safety and efficiency, facilitates maintenance and inspection, and is compatible with existing sintering furnace exhaust ports.
Smart Images
Figure CN223636660U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to photovoltaic cell manufacturing equipment accessory technical field especially is photovoltaic cell piece equipment end printing sintering furnace produced organic volatile exhaust device. BACKGROUND
[0002] The photovoltaic cell piece sintering furnace is one of the important equipment for producing silicon wafer and printing circuit of cell piece in photovoltaic industry. It can melt and sinter the silicon material and the circuit printed by screen printing at high temperature to form monocrystalline and polycrystalline silicon wafer and cell piece, which provides raw materials and cell piece required by assembly for subsequent cell production. The photovoltaic sintering furnace is usually composed of furnace body, heating system, atmosphere control system, temperature control system, exhaust system and other parts. Among them, the furnace body is the main structure of the equipment, usually made of high-grade refractory material, which can withstand high temperature and high pressure. The heating system is the core part of the equipment, including heating elements, power supply and control device, etc., which is used to generate high temperature to melt silicon material and produce cell piece important link equipment. The atmosphere control system is used to control the atmosphere in the furnace, such as oxygen, nitrogen, etc., to optimize the growth conditions of silicon wafer and the production of organic volatile matter by sintering. The temperature control system is used to accurately control the furnace temperature to ensure the effective export of the net circuit printed on the silicon wafer and cell piece and guarantee its quality and production efficiency. The exhaust system is responsible for discharging the organic waste gas generated in the production process.
[0003] The treatment and discharge of organic waste gas are directly related to the needs of safe production. The existing emptying pipeline and tail gas emptying pipe are the same pipeline, and high-temperature tail gas and high-concentration organic waste gas will be directly mixed with the condensate oil of organic waste gas wall-hanging reflux, which is easy to cause explosion and fire of the emptying tail gas pipe, and the explosion and fire may further cause fire in the inlet pipeline, causing the risk to expand. Therefore, it is necessary to improve the exhaust system matched with the photovoltaic sintering furnace. UTILITY MODEL CONTENT
[0004] The existing photovoltaic sintering furnace has the defect that the organic waste gas condenses into oil and enters the furnace body after wall-hanging reflux.
[0005] In view of at least one of the above technical problems, the utility model provides a Y-shaped exhaust device matched with the photovoltaic sintering furnace, which optimizes and improves the structure of the exhaust channel, increases the safety monitoring device, improves the collection and discharge efficiency of the organic volatile matter of the exhaust system, and the specific technical scheme is as follows:
[0006] A Y-shaped exhaust device for a photovoltaic sintering furnace, comprising a vertical pipe, a detachable oil collecting box being sealingly connected to the lower end of the vertical pipe, a pull-out fire screen being arranged in the upper cavity of the vertical pipe, a negative pressure gauge being arranged on the outer surface of the vertical pipe, the detection port of the negative pressure gauge being located in the inner cavity of the vertical pipe below the fire screen, an automatic fireproof valve being connected to the upper end of the vertical pipe, a slant pipe being connected to one side of the vertical pipe, an air inlet being arranged at the lower end of the slant pipe, a U-shaped inward wall being arranged on the port of the air inlet, an oil discharging channel being arranged at the bottom of the inward wall, and a valve being arranged on the oil discharging channel.
[0007] In some embodiments of the present disclosure, a flange I is arranged at the lower end of the vertical pipe, and the detachable oil collecting box is provided with a flange II matched with the flange I.
[0008] In some embodiments of the present disclosure, the fire screen is a grid screen.
[0009] In some embodiments of the present disclosure, the side wall of the vertical pipe is provided with a slot matched with the grid screen.
[0010] In some embodiments of the present disclosure, the grid screen is provided with a locking assembly for preventing falling off.
[0011] In some embodiments of the present disclosure, the automatic fireproof valve is a 180℃ automatic fireproof valve.
[0012] In some embodiments of the present disclosure, the axis of the slant pipe forms an acute angle with the axis of the vertical pipe.
[0013] In some embodiments of the present disclosure, the air inlet is a horn-shaped structure with an open lower end.
[0014] In some embodiments of the present disclosure, the lower end of the air inlet is arranged vertically.
[0015] In some embodiments of the present disclosure, the outer wall of the air inlet is provided with an oil level window.
[0016] Compared with the prior art, the Y-shaped exhaust device for the photovoltaic sintering furnace has the following beneficial effects:
[0017] Through the arrangement of the detachable oil collecting box and the slant pipe, the flow of the organic waste gas condensate hanging on the wall is increased, the direct contact between the waste gas condensate and the high-temperature tail gas is reduced, and the technical problem of backflow of the condensate into the furnace body and explosion with the high-temperature tail gas in the furnace body is avoided.
[0018] Through the arrangement of the automatic fireproof valve, the automatic closing of the pipeline can be effectively realized when the temperature is high or there is an open flame.
[0019] By changing the exhaust emission structure, the exhaust gas is smooth, safe and effective, easy to disassemble and maintain, and easy to check and observe, thereby increasing safe operation and ensuring smooth exhaust.
[0020] The designed structure is intuitive and can be directly matched with the exhaust port of the existing sintering furnace, thereby facilitating market promotion.
[0021] The sintering furnace can be matched with other equipment smoke exhaust systems to provide technical inspiration. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 is a structural schematic view of the structure matched with the sintering furnace in embodiment 2 of the utility model structure.
[0023] Figure 2 is an internal structure display schematic view of embodiment 2 of the utility model structure.
[0024] Marked numbers in the figure: 1, vertical pipe; 2, detachable oil collecting box; 3, fire barrier net; 4, negative pressure gauge; 5, automatic fire valve; 6, inclined pipe; 7, air inlet; 71, inner turning wall; 72, valve. DETAILED DESCRIPTION
[0025] In order to better understand the purpose, structure and function of the utility model, the technical solutions in the embodiments of the utility model will be clearly and completely described below.
[0026] It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The terms "include" and "have" and any variations thereof in the present application are open-ended, intended to cover non-exclusive inclusion.
[0027] The serial numbers of components in the present application are only used to distinguish the objects described, and do not have any sequence or technical meaning. In the present disclosure, "connection" includes direct and indirect "connection" unless otherwise specified. In the description of the present application, it should be understood that the orientation terms "upper", "lower", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the drawings shown, and are only for the purpose of description, and do not indicate or imply that the device or unit referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Figure 2
[0028] As shown in the drawings, Figures 1 to 2 As shown, a Y-shaped exhaust device matched with a photovoltaic sintering furnace is designed, which comprises a vertical pipe 1, the lower end of the vertical pipe 1 is sealingly connected with a detachable oil collecting box 2; a pull-out fire screen 3 is arranged in the upper cavity of the vertical pipe 1, a negative pressure table 4 is arranged on the outer surface of the vertical pipe 1, the detection opening of the negative pressure table 4 is in the inner cavity of the vertical pipe 1 below the fire screen 3, an automatic fireproof valve 5 is connected to the upper end of the vertical pipe 1, through the arrangement of the automatic fireproof valve 5, the pipeline can be automatically closed when high temperature or open flame, and the alarm and the fan can be triggered and closed externally when necessary; a inclined pipe 6 is connected to one side of the vertical pipe 1, an air inlet 7 is arranged at the lower end of the inclined pipe 6, the air inlet 7 can be directly matched with the existing sintering furnace exhaust port, which is convenient for market promotion, a U-shaped inner turning wall 71 is arranged on the opening of the air inlet 7, an oil discharge channel is arranged at the bottom of the inner turning wall 71, a valve 72 is arranged in the oil discharge channel, through the change of the waste gas discharge structure, the exhaust is smooth, safe and effective, the oil discharge can be easily disassembled and maintained, and the safety operation is convenient for checking and observing, and the exhaust flow is ensured. Smoothness; through the arrangement of the detachable oil collecting box 2 and the inclined pipe 6, the shunt discharge of the organic waste gas hanging on the wall is increased, the direct contact of the waste gas condensate oil and the high-temperature tail gas is reduced, the condensate oil backflow into the furnace body can be effectively prevented, and the technical problem of mixed explosion with the high-temperature tail gas of the furnace body is avoided.
[0029] In use, the air inlet 7 is connected to the exhaust port of the sintering furnace, so that the inner wall of the inner turning wall 71 is close to the exhaust port of the sintering furnace, after the organic waste gas is discharged from the exhaust hole of the sintering furnace, the organic waste gas enters the cavity of the Y-shaped exhaust device, the oil liquid is condensed on the inner wall, the oil liquid flows downward under the action of gravity, the condensed liquid oil in the vertical pipe 1 flows downward into the detachable oil collecting box 2, the condensed liquid oil in the inner wall of the inclined pipe 6 flows downward into the inner turning wall 71, and will not enter the sintering furnace; the waste oil cleaning of the vertical pipe 1 can be realized by dismounting the detachable oil collecting box 2, and the waste oil cleaning in the inner turning wall 71 can be realized through the valve 72.
[0030] In the above embodiments, three examples are listed to realize the above technical solutions, in this text, the phrase "embodiment" means that the specific features, structures or characteristics described in combination with the embodiment can be contained in at least one embodiment of the application. The phrase appears in various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment that is not mutually exclusive with other embodiments. In the case of no conflict, each embodiment in the application can be combined with each other.
[0031] The embodiment one discloses a Y-shaped exhaust device for a photovoltaic sintering furnace, comprising a vertical pipe 1, the vertical pipe 1 is a high-temperature-resistant metal pipe, a detachable oil collecting box 2 is sealingly connected to the lower end of the vertical pipe 1, and the box cavity of the detachable oil collecting box 2 is used for containing oil flowing downwards in the vertical pipe 1; a pull-out type fire-retardant net 3 is arranged in the upper pipe cavity of the vertical pipe 1, which can effectively block open flames, a negative pressure table 4 is arranged on the outer surface of the vertical pipe 1, which is used for monitoring the pressure in the pipe in real time and finding problems of poor exhaust, the detection opening of the negative pressure table 4 is located in the inner cavity of the vertical pipe 1 below the fire-retardant net 3, an automatic fireproof valve 5 is connected to the upper end of the vertical pipe 1, and the automatic fireproof valve 5 can effectively realize automatic closing of the pipe in high temperature or open flames; a inclined pipe 6 is connected to one side of the vertical pipe 1, an air inlet 7 is arranged at the lower end of the inclined pipe 6, the air inlet 7 can be directly matched with an existing sintering furnace exhaust port, and the air inlet 7 is convenient for market promotion, the mouth of the air inlet 7 is provided with a U-shaped inward wall 71, in use, a KF joint can be added as needed, and the maintenance, cleaning and inspection of oil dirt are facilitated; the U-shaped inward wall 71 can be a double-right-angle inward wall, a circular-arc bottom inward wall or a round-corner inward wall; the bottom of the inward wall 71 is provided with an oil discharge channel, the oil discharge channel is provided with a valve 72, the exhaust structure is changed, the exhaust is smooth, safe and effective, the oil discharge is convenient to disassemble and maintain, and the safety operation is convenient to check and observe, the exhaust is ensured to be smooth, and the organic waste gas liquefied waste oil is discharged through the detachable oil collecting box 2 and the inclined pipe 6, which can effectively prevent the condensed oil from flowing back into the furnace body and avoid the technical problem of explosion caused by mixing with high-temperature tail gas of the furnace body;
[0032] In the embodiment, the vertical pipe 1 is a welded slit steel pipe, the lower end of the vertical pipe 1 is provided with a flange plate I, the detachable oil collecting box 2 is provided with a flange plate II matched with the flange plate I, the vertical pipe 1 and the detachable oil collecting box 2 are connected through bolt fasteners, the connection is stable and resistant to shaking, the fire-retardant net 3 is a grid net, which realizes the purposes of oil separation and fire blocking, and in the embodiment, the grid net is a stainless steel fire-retardant grid net, the side wall of the vertical pipe 1 is provided with a slot matched with the grid net, the grid net is inserted and pulled out through the slot, and meanwhile, the grid net is vertically positioned by the slot wall, and the grid net can be taken out from the slot for maintenance or replacement as needed when the grid net is not ventilated due to too much condensed smoke oil;
[0033] In the embodiment, the inclined pipe 6 and the air inlet 7 are integrally designed and manufactured through sheet metal process, and in addition, the inclined pipe 6 and the air inlet 7 are connected through detachable flanges in the embodiment, which realizes the purpose of convenient disassembly and maintenance.
[0034] like Figures 1 to 2 As shown, Embodiment 2 discloses a Y-type exhaust device for a photovoltaic sintering furnace. The difference between this embodiment and Embodiment 1 is that the vertical pipe 1 is a seamless steel pipe, and the vertical pipe 1 is connected to the detachable oil collection box 2 via a quick-release flange structure. In this embodiment, the quick-release flange structure can be a clamp-type quick-release flange, enabling quick disassembly and assembly for easy maintenance. The grille is equipped with an anti-detachment locking component. In this embodiment, the locking component is a fixing screw located at the slot, which horizontally fixes the grille, preventing it from detaching due to pipe vibration. In this embodiment, the automatic fire damper 5 is a 180°C manual / automatic integrated fire damper, automatically closing in case of fire, manually closing during maintenance, and adjusting the airflow. The integrated fire damper is a functional valve body currently available on the market, also called a manual / automatic integrated fire damper. It is normally open. In case of fire, the smoke detector sends an electrical signal through the control center, energizing the electromagnet in the actuator, automatically closing the valve body and outputting a closing electrical signal. The valve can be manually closed or closed by a 180° fusion action. The valve body typically has a multi-position adjustable airflow switch, and the smoke and fire damper can be manually reset. The inclined pipe 6 is a straight pipe, and its axis forms an acute angle with the axis of the vertical pipe 1. The inclined pipe 6 and the air inlet 7 are connected via an airtight elbow. The air inlet 7 is a trumpet-shaped structure with an open lower end, which can increase the oil storage capacity on the inner wall 71. The lower end of the air inlet 7 is vertically positioned for easy assembly with existing sintering furnace exhaust ports.
[0035] Example 3 discloses a Y-type exhaust device for a photovoltaic sintering furnace. The difference between this example and Example 2 is that the locking component is a clamp. When in use, the clamp wraps around the vertical pipe 1 to fix the grid mesh laterally, preventing the grid mesh from detaching due to pipe vibration. In this example, the inclined pipe 6 is a bent pipe. The outer wall of the air inlet 7 is equipped with an oil level window to facilitate observation of the oil quantity and oil level, and to facilitate observation and periodic maintenance.
[0036] It is understood that the above description is only for illustrating specific embodiments of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the scope of disclosure of this application.
Claims
1. A Y-type exhaust device for a photovoltaic sintering furnace, characterized by: The utility model provides an automatic fire prevention device for oil tank, including stand pipe (1), the lower end of stand pipe (1) is sealedly connected with detachable oil collecting box (2), be equipped with the pull -out type fire screen (3) in the upper cavity of stand pipe (1), the outer surface of stand pipe (1) is equipped with negative pressure table (4), the detection mouth of negative pressure table (4) is in the inner chamber of stand pipe (1) below fire screen (3), and the upper end of stand pipe (1) is connected with automatic fire prevention valve (5), one side of stand pipe (1) is connected with inclined pipe (6), and the lower end of inclined pipe (6) is equipped with air inlet (7), and the mouth along of air inlet (7) is equipped with the inside turning wall (71) of U shape, and the bottom of inside turning wall (71) is equipped with oil discharge channel, and oil discharge channel is equipped with valve (72).
2. The Y-type exhaust device for a photovoltaic sintering furnace according to claim 1, characterized in that, The stand pipe (1) and the detachable oil collecting box (2) are connected by quick release flange structure.
3. The Y-type exhaust device for a photovoltaic sintering furnace according to claim 1, characterized in that, The fire screen (3) is a grid.
4. The Y-type exhaust device for a photovoltaic sintering furnace according to claim 3, characterized in that, The side wall of the stand pipe (1) is provided with a slot adapted to the grid.
5. The Y-type exhaust device for a photovoltaic sintering furnace according to claim 4, characterized in that, The grid is provided with a locking assembly to prevent falling.
6. The Y-type exhaust device for a photovoltaic sintering furnace according to claim 1, characterized in that, The automatic fire prevention valve (5) is a 180℃ manual-automatic fire prevention valve.
7. The Y-type exhaust device for a photovoltaic sintering furnace according to claim 1, characterized in that, The axis of the inclined pipe (6) and the axis of the stand pipe (1) form an acute angle.
8. The Y-type exhaust device for a photovoltaic sintering furnace according to claim 1, characterized in that, The air inlet (7) is a horn cylinder structure with an open lower end.
9. The Y-type exhaust device for a photovoltaic sintering furnace according to claim 8, characterized in that, The lower end of the air inlet (7) is vertically arranged.
10. The Y-type exhaust device for a photovoltaic sintering furnace according to claim 1 or 9, characterized in that, The outer wall of the air inlet (7) is provided with an oil level window.