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CN-122010400-A - Glass annealing kiln and glass annealing kiln system

CN122010400ACN 122010400 ACN122010400 ACN 122010400ACN-122010400-A

Abstract

The invention discloses a glass annealing furnace and a glass annealing furnace system, wherein the glass annealing furnace comprises a furnace body, a heat exchange pipeline, a heating pipe, a heat exchanger body, a cooling pipe, a heat exchange station, a third pipeline, a reversing valve and a first circulating pump, wherein a channel is formed in the furnace body, the heat exchange pipeline is arranged on and/or below the channel, the heat exchange part of the heat exchange pipeline faces the channel, the heating pipe, the cooling pipe and the third pipeline are connected through the reversing valve, the other end of the heating pipe is communicated with one end of the heat exchange pipeline, the other end of the cooling pipe is communicated with the other end of the heat exchange pipeline, the heat exchanger body and the first circulating pump are arranged on the heating pipe, the cooling pipe flows through the heat exchange station, the other end of the third pipeline is communicated with a node of the first pipeline, and the node is positioned between the first circulating pump and the heat exchanger body. The kiln has the beneficial effects that the electric heating and external fan heat dissipation in the prior art are abandoned, and the energy waste problem is solved on the basis of ensuring the kiln body cooling and heating efficiency.

Inventors

  • ZHANG XING
  • GE JUN
  • QIANG DENG
  • WU YANGUANG
  • CHEN DONG
  • CHENG ZHONG
  • ZHOU CHAO
  • SUN JIALE
  • YE PENG

Assignees

  • 蚌埠凯盛工程技术有限公司

Dates

Publication Date
20260512
Application Date
20260115

Claims (10)

  1. 1. The glass annealing kiln is characterized by comprising a kiln body, a heat exchange pipeline, a heating pipe, an auxiliary heat exchanger (10), a cooling pipe, a heat exchange station (18), a third pipeline (16), a reversing valve (15) and a first circulating pump (12), wherein a channel is formed in the kiln body, the heat exchange pipeline is arranged on and/or below the channel, the heat exchange part of the heat exchange pipeline faces the channel, the heating pipe, the cooling pipe and the third pipeline (16) are connected through the reversing valve (15), the other end of the heating pipe is communicated with one end of the heat exchange pipeline, the other end of the cooling pipe is communicated with the other end of the heat exchange pipeline, the auxiliary heat exchanger (10) and the first circulating pump (12) are arranged on the heating pipe, the cooling pipe flows through the heat exchange station (18), the other end of the third pipeline (16) is communicated with a node of the first pipeline (11), and the node is positioned between the first circulating pump (12) and the auxiliary heat exchanger (10).
  2. 2. The glass annealing furnace according to claim 1, wherein the heat exchange pipeline comprises an input main pipe (13), heat exchange mechanisms (23) and an output main pipe (21), the input main pipe (13) and the output main pipe (21) are all led into the furnace body and are arranged along the length direction of the furnace body, a plurality of heat exchange mechanisms (23) are uniformly arranged in the furnace body along the length direction of the input main pipe (13), the heat exchange mechanisms (23) are internally configured to be penetrated by a channel, one end of each heat exchange mechanism (23) is communicated with the input main pipe (13), and the other end of each heat exchange mechanism (23) is communicated with the output main pipe (21).
  3. 3. The glass annealing furnace according to claim 2, wherein the heat exchange mechanism (23) comprises a first upper plate main pipeline (230), a second upper plate main pipeline (231), a first lower plate main pipeline (232), a second lower plate main pipeline (233), an upper heat exchange unit (234), a lower heat exchange unit (235), a connecting pipe (238) and a first control valve (239), the first upper plate main pipeline (230), the first lower plate main pipeline (232), the second upper plate main pipeline (231) and the second lower plate main pipeline (233) are respectively arranged on the upper side wall and the lower side of the furnace body, the input main pipeline (13) is communicated with the first upper plate main pipeline (230), the first upper plate main pipeline (230) is communicated with the input end of the upper heat exchange unit (234), the output end of the upper heat exchange unit (234) is communicated with the second upper plate main pipeline (231), the second upper plate main pipeline (231) is communicated with the second lower plate main pipeline (233) through the connecting pipe (238), the second lower plate main pipeline (233) is communicated with the input end of the lower heat exchange unit (235), and the lower heat exchange unit (232) is communicated with the first lower plate main pipeline (21).
  4. 4. A glass annealing furnace according to claim 3, wherein the upper heat exchange unit (234) comprises a first flow pipe (2340), a first hose (2341), a second control valve (2342), a heat exchanger body (2343), a second hose (2344) and a second flow pipe (2345), wherein a plurality of rows of heat exchanger bodies (2343) are arranged above the channel, wherein the heat exchanger bodies (2343) form a heat exchange pipeline heat exchange part, the first flow pipe (2340) and the second flow pipe (2345) are parallel to the wide side of the furnace body, the first plate upper main pipeline (230) is communicated with the first flow pipe (2340) to form an upper heat exchange unit (234) input end, the first flow pipe (2340) is communicated with one end of the heat exchanger bodies (2343) through the first hose (2341), the first hose (2341) is provided with the second control valve (2342), the other end of the heat exchanger bodies (2343) is communicated with the second flow pipe (2345) through the second hose (2344), and the second flow pipe (2345) is communicated with the second plate upper main pipeline (231) to form an upper heat exchange unit (234) output end.
  5. 5. The glass annealing lehr according to claim 4, wherein the upper heat exchange unit (234) further comprises a plurality of lifters (2348) disposed within the lehr body, the lifters (2348) being configured to adjust a height distance of the corresponding heat exchanger body (2343) from the channel.
  6. 6. The glass annealing lehr of claim 4, wherein the upper heat exchange unit (234) is structurally identical to the lower heat exchange unit (235).
  7. 7. A glass annealing lehr according to claim 3, wherein a first control valve (239) is provided on the connecting tube (238).
  8. 8. A glass annealing furnace according to claim 3, wherein the heat exchange mechanism (23) further comprises an emergency pipe (236), the first under-plate main pipe (232) is communicated with the first on-plate main pipe (230) through the emergency pipe (236), and the emergency pipe (236) is provided with an emergency gate valve (237).
  9. 9. The glass annealing lehr of claim 1 further comprising a coolant return header (20), wherein the coolant return header (20) is disposed on the cooling tube.
  10. 10. Glass annealing furnace system using the glass annealing furnace according to any one of claims 1 to 9, characterized by comprising a glass annealing furnace system, a sensor, a control module (5) and a central control unit (6), wherein the second control valve (2342), the reversing valve (15) and the first control valve (239) are all electromagnetic valves, the sensor is arranged in the furnace body, and the sensor is used for detecting the working condition information in the furnace body and outputting the working condition information to the control module (5); the control module (5) is used for receiving and integrating information and transmitting the information to the central control unit (6); The central control unit (6) is used for receiving information and controlling the opening and closing of the electromagnetic valve, the auxiliary heat exchanger (10) and the first circulating pump (12).

Description

Glass annealing kiln and glass annealing kiln system Technical Field The invention relates to the technical field of glass production, in particular to a glass annealing kiln and a glass annealing kiln system. Background Glass annealing is a critical process in glass production and aims to eliminate internal stress generated in the glass during the forming process so as to improve the optical uniformity, mechanical strength and thermal stability of the glass. Conventional glass annealing kilns generally adopt an electric heating radiant tube or a gas heating mode, and are equipped with a complex external air cooling system (comprising a fan, an air pipe, a heat exchanger body and the like) for cooling adjustment. The patent document in China with publication number CN207096844U discloses a zone temperature control device for a float glass crystallization annealing kiln heating section, which comprises a kiln body frame, a kiln wall, a kiln top and a kiln bottom, an electric heating component arranged in the annealing kiln body and a temperature control unit, wherein the temperature control unit consists of the electric heating component, a temperature sensor, a temperature controller and a solid relay, and the temperature is regulated through the electric heating component so as to meet the requirement of the float glass on the uniformity of the temperature in the kiln body. However, the electric heating has huge energy consumption and high operation cost, and the pollution emission problem exists when the fuel gas is heated. And secondly, the air cooling system which relies on air convection heat exchange has low temperature control precision and response lag, is difficult to realize an accurate annealing curve, and is easy to cause unstable annealing quality. Again, the system is complex in structure, large in floor area, and high in initial investment and maintenance cost. Finally, a large amount of waste heat generated in the annealing process is not effectively utilized and is directly discharged into the atmosphere, so that energy waste is caused. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information has been made as prior art that is well known to a person of ordinary skill in the art. Disclosure of Invention The invention aims to solve the technical problem of energy waste on the basis of ensuring the cooling and heating efficiency of the kiln body. The invention solves the technical problems by the following technical means: The invention discloses a glass annealing kiln, which comprises a kiln body, a heat exchange pipeline, a heating pipe, a heat exchanger body, a cooling pipe, a heat exchange station, a third pipeline, a reversing valve and a first circulating pump, wherein a channel is formed in the kiln body, the heat exchange pipeline is arranged on and/or under the channel, the heat exchange part of the heat exchange pipeline faces the channel, the heating pipe, the cooling pipe and the third pipeline are connected through the reversing valve, the other end of the heating pipe is communicated with one end of the heat exchange pipeline, the other end of the cooling pipe is communicated with the other end of the heat exchange pipeline, the heat exchanger body and the first circulating pump are arranged on the heating pipe, the cooling pipe flows through the heat exchange station, the other end of the third pipeline is communicated with a node of the first pipeline, and the node is positioned between the first circulating pump and the heat exchanger body. The invention discards the electric heating and external fan heat dissipation in the prior art, uses the waste heat of the kiln body as a main heat source in the heating process, omits a huge fan system, a gas pipeline or a resistance belt in the cooling process, and uses the heat exchange station of the annealing kiln system to play three advantages in the whole process: Firstly, the heat exchange efficiency of the liquid refrigerant is far higher than that of air, and the response speed of the whole temperature rising and reducing is obviously improved due to the large heat capacity and high heat conduction of the liquid refrigerant, namely, the efficiency of the liquid refrigerant is higher than that of a fan and an electric heating effect in the prior art no matter the liquid refrigerant is cooled or heated. And secondly, extra energy and equipment are not introduced too much, so that on the basis of improving the cooling and heating efficiency, the energy consumption and the running cost are greatly reduced, the pollution is low, and the core requirement of the current sustainable development is met. Finally, the heating and cooling are not regarded as separate parts any more, but the two parts are controlled independently in the working principle, but structurally