A preform tail handle heat energy recovery system
By attaching a heat collector to the tail end of the precast briquette, a heat recovery and circulation system is constructed, converting the heat energy of the tail end of the precast briquette into electrical energy. This solves the problem of heat energy not being recovered during the heating process of the precast briquette, and achieves efficient energy utilization and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGTIAN TECH FIBER OPTICS
- Filing Date
- 2025-08-04
- Publication Date
- 2026-07-07
AI Technical Summary
The heat generated during the heating process of the preform was not effectively recovered, resulting in low energy utilization and increased fiber optic production costs.
A collector is coaxially connected to the tail shank of the precast rod. Heat energy is collected through heat transfer and used for heat exchange with the medium inside the collector to form a recycling system. This system includes a high-temperature heat storage tank, a steam generator, a steam turbine, and a generator, which realizes the conversion of heat energy into electrical energy.
It improves energy efficiency, reduces fiber optic production costs, and enhances heat exchange by optimizing medium flow through a baffle plate.
Smart Images
Figure CN224470200U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical fiber production technology, specifically to a preform rod tail shank heat recovery system. Background Technology
[0002] During the heating process of the preform, some of the heat generated by the furnace is concentrated at the tail end of the preform in the form of light, causing a significant increase in the temperature of the surrounding space. However, the current preform heating process consumes a huge amount of electricity with low energy efficiency, and there is no practical solution for recovering the lost energy. In addition, optical fiber manufacturing requires a temperature-controlled workshop, and the area near the furnace requires increased air conditioning cooling capacity, which leads to a series of effects that increase costs. Therefore, how to collect the heat energy from the tail end of the preform and convert it into electrical energy has become an urgent problem to be solved. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a preform tail heat recovery system, which can coaxially connect the collector to the preform tail, thereby recovering and utilizing the heat energy accumulated at the preform tail in real time through heat transfer, thereby improving energy utilization efficiency and reducing the production cost of optical fiber.
[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: The innovation of this utility model is that it includes a heat collector, a high-temperature heat storage tank, a steam generator, a feed water pump, a condenser, a steam turbine, and a generator; a heat collector is coaxially sleeved on each precast stub; the outlet ends of all the heat collectors are connected to the inlet of the high-temperature heat storage tank via pipelines, and the medium heated by heat exchange in the heat collectors is collected into the high-temperature heat storage tank. The outlet of the hot tank is connected to the steam turbine via a pipeline through a steam generator. The steam generator converts the high-temperature medium from a liquid state to a gaseous state before sending it to the steam turbine to perform work. The steam turbine is connected to the generator and the condenser respectively. The generator generates electricity from the work done, and the excess medium after work is sent to the condenser to be converted back into a liquid state. The condenser is connected to the inlet of each of the solar collectors via a pipeline through a feed water pump. The cooled medium is sent back to the corresponding solar collector to form a cycle.
[0005] Preferably, the medium is water or a saturated sodium chloride solution.
[0006] Preferably, each of the solar collectors includes a solar collector body, a medium inlet pipe, and a medium outlet pipe; each solar collector body is a vertically arranged cylindrical structure, and a mounting hole matching the tail shank of the precast rod is coaxially and vertically embedded in the middle of its top surface. Each mounting hole coaxially and vertically penetrates the bottom surface of the corresponding solar collector body, and each solar collector body is coaxially sleeved onto the tail shank of the corresponding precast rod through the mounting hole; an annular cavity is coaxially embedded in the interior of each solar collector body relative to the outside of the mounting hole, and each annular cavity is not interconnected with the corresponding mounting hole and does not extend out of the corresponding solar collector body; on the outside of each solar collector body... A medium inlet pipe is also provided radially and horizontally on one side of the circumferential surface near its bottom end. One end of each medium inlet pipe is sealed and connected to the bottom end of the corresponding annular cavity, and the other end is connected to the water supply pump via a pipeline. A medium outlet pipe is also provided radially and horizontally on the other side of the outer circumferential surface of each heat collector near its top end. The medium outlet pipe and the corresponding medium inlet pipe on the same heat collector are respectively located on both sides of the corresponding heat collector. One end of each medium outlet pipe is sealed and connected to the top end of the corresponding annular cavity, and the other end is connected to the high-temperature heat storage tank via a pipeline.
[0007] Preferably, the upper and lower ends of each annular cavity extend toward the two ends of the corresponding heat collector, and do not extend beyond the top and bottom surfaces of the corresponding heat collector; the inner diameter of each annular cavity is larger than the diameter of the corresponding mounting hole, and its outer diameter is smaller than the diameter of the corresponding heat collector.
[0008] Preferably, each of the heat collectors is made of brass material with good thermal conductivity, and its inner wall is covered with a layer of carbon black coating for absorbing heat energy at the position of the mounting hole, so as to transfer the heat accumulated at the tail of the preform to the annular cavity.
[0009] Preferably, a temperature sensor is connected to each of the medium inlet pipes and each of the medium outlet pipes, and each of the temperature sensors is electrically connected to the water pump, so as to control the flow rate of the medium in real time through temperature changes.
[0010] Preferably, it further includes a first baffle and a second baffle; within each annular cavity, a first baffle and a second baffle are arranged alternately from top to bottom, each of the first baffle and the second baffle being a coaxially arranged annular structure, and both being fan-shaped; the outer diameter of each second baffle matches the outer diameter of the corresponding annular cavity, and its inner diameter is larger than the inner diameter of the corresponding annular cavity; the outer diameter of each first baffle is smaller than the outer diameter of the corresponding annular cavity, and its inner diameter matches the inner diameter of the corresponding annular cavity; the uppermost first baffle is located below the corresponding medium outlet pipe, and the lowermost... A second baffle is located above the corresponding medium inlet pipe; the inner circumferential surface of each first baffle is coaxially fixedly connected to the inner wall of the annular cavity of the corresponding heat collector, and its outer circumferential surface is spaced apart from the outer wall of the annular cavity of the corresponding heat collector; the outer circumferential surface of each second baffle is coaxially fixedly connected to the corresponding position of the outer wall of the annular cavity of the corresponding heat collector, and its inner circumferential surface is spaced apart from the interior of the annular cavity of the corresponding heat collector, thereby making adjacent first baffles and second baffles staggered left and right, and reducing the flow rate of the medium in the annular cavity through the cooperation of the first baffles and second baffles.
[0011] Preferably, it also includes a heat insulation layer; a matching heat insulation layer is also coaxially sleeved on the outer circumferential surface of each of the heat collectors. Each heat insulation layer is made of asbestos cloth or graphite felt, and its two ends are coaxially flanged towards the center of the top and bottom surfaces of the corresponding heat collectors, respectively, and neither extends into the coverage area of the corresponding mounting hole, thereby ensuring that the heat insulation layer does not interfere with the action of the heat collector being sleeved on the precast rod tail shank, and the heat insulation layer keeps the corresponding heat collectors warm.
[0012] The beneficial effects of this utility model are:
[0013] (1) This utility model can coaxially connect the collector to the tail of the preform rod, thereby recovering and utilizing the heat energy accumulated at the tail of the preform rod in real time through heat transfer, thereby improving the energy utilization rate and reducing the production cost of optical fiber.
[0014] (2) By using the first and second baffles together, this utility model can reduce the flow rate of the medium in the annular cavity, thereby ensuring the heat exchange time and improving the heat exchange effect. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of a precast rod tail shank heat recovery system according to this utility model.
[0017] Figure 2 for Figure 1 A schematic diagram of the structure of the solar collector.
[0018] Among them, 1-collector; 2-high temperature heat storage tank; 3-steam generator; 4-feed water pump; 5-condenser; 6-steam turbine; 7-generator; 11-collector body; 12-annular cavity; 13-first baffle; 14-second baffle; 15-medium inlet pipe; 16-medium outlet pipe; 17-insulation layer. Detailed Implementation
[0019] The technical solution of this utility model will be clearly and completely described below through specific embodiments.
[0020] This utility model discloses a precast stub heat recovery system, comprising a collector 1, a high-temperature heat storage tank 2, a steam generator 3, a feed water pump 4, a condenser 5, a steam turbine 6, and a generator 7; the specific structure is as follows: Figure 1 , Figure 2 As shown, a collector 1 is coaxially sleeved on the tail shank of each precast bar. The outlet ends of all collectors 1 are connected to the inlet of the high-temperature heat storage tank 2 via pipelines. The medium heated by heat exchange in the collectors 1 is collected into the high-temperature heat storage tank 2. The outlet of the high-temperature heat storage tank 2 is connected to the steam turbine 6 via a steam generator 3 via a pipeline. The high-temperature medium is converted from liquid to gas by the steam generator 3 and then sent to the steam turbine 6 to do work. The steam turbine 6 is connected to the generator 7 and the condenser 5. The electrical energy converted from the work is generated by the generator 7 and the excess medium after work is sent to the condenser 5 to be converted back into liquid. The condenser 5 is connected to the inlet end of each collector 1 via a feed water pump 4 via a pipeline. The cooled medium is sent back into the corresponding collector 1 to form a cycle.
[0021] The medium is water or a saturated sodium chloride solution. Because the time and spatial range of heat transfer from collector 1 to high-temperature storage tank 2 are relatively large, some heat may be lost during transportation. Therefore, this invention can use a saturated sodium chloride solution as the medium to increase the initial temperature.
[0022] Each collector 1 of this utility model includes a collector body 11, a medium inlet pipe 15, a medium outlet pipe 16, a first baffle plate 13, a second baffle plate 14, and a heat insulation layer 17; for example Figure 1 , Figure 2As shown, each heat collector 11 is a vertically arranged cylindrical structure, and a mounting hole matching the tail shank of the precast rod is coaxially and vertically embedded in the middle of its top surface. Each mounting hole coaxially and vertically penetrates the bottom surface of the corresponding heat collector 11, and each heat collector 11 is coaxially sleeved on the tail shank of the corresponding precast rod through the mounting hole. An annular cavity 12 is coaxially embedded in the interior of each heat collector 11 relative to the outside of the mounting hole, and each annular cavity 12 is not connected to the corresponding mounting hole and does not extend out of the corresponding heat collector 11.
[0023] like Figure 1 , Figure 2 As shown, a medium inlet pipe 15 is radially and horizontally arranged on one side of the outer circumference of each collector 11 near its bottom end. One end of each medium inlet pipe 15 is sealed and connected to the corresponding annular cavity 12 near its bottom end, and the other end is connected to the water pump 4 via a pipeline. A medium outlet pipe 16 is radially and horizontally arranged on the other side of the outer circumference of each collector 11 near its top end. The medium outlet pipe 16 and the corresponding medium inlet pipe 15 on the same collector 11 are respectively arranged on both sides of the corresponding collector 11. One end of each medium outlet pipe 16 is sealed and connected to the corresponding annular cavity 12 near its top end, and the other end is connected to the high-temperature heat storage tank 2 via a pipeline. Each collector 11 is made of brass material with good thermal conductivity, and its inner wall is covered with a layer of carbon black coating for absorbing heat energy at the mounting hole position, thereby transferring the heat accumulated at the tail of the preformed rod to the annular cavity 12.
[0024] like Figure 1 , Figure 2 As shown, the upper and lower ends of each annular cavity 12 extend toward the two ends of the corresponding heat collector 11, and none of them extend beyond the top and bottom surfaces of the corresponding heat collector 11; the inner diameter of each annular cavity 12 is larger than the diameter of the corresponding mounting hole, and its outer diameter is smaller than the diameter of the corresponding heat collector 11.
[0025] like Figure 1 , Figure 2 As shown, a temperature sensor is connected to each medium inlet pipe 15 and each medium outlet pipe 16, and each temperature sensor is electrically connected to the water pump 4, thereby controlling the flow rate of the medium in real time through temperature changes.
[0026] like Figure 1 , Figure 2As shown, within each annular cavity 12, first baffles 13 and second baffles 14 are arranged alternately from top to bottom. Each first baffle 13 and second baffle 14 is a coaxially arranged annular structure, and both are fan-shaped. The outer diameter of each second baffle 14 matches the outer diameter of the corresponding annular cavity 12, and its inner diameter is larger than the inner diameter of the corresponding annular cavity 12. The outer diameter of each first baffle 13 is smaller than the outer diameter of the corresponding annular cavity 12, and its inner diameter matches the inner diameter of the corresponding annular cavity 12. The uppermost first baffle 13 is located below the corresponding medium outlet pipe 16, and the lowermost second baffle 14 is located below the corresponding medium outlet pipe 16. Above the medium inlet pipe 15; the inner circumferential surface of each first baffle 13 is coaxially fixedly connected to the inner wall of the annular cavity 12 of the corresponding heat collector 11, and its outer circumferential surface is spaced apart from the outer wall of the annular cavity 12 of the corresponding heat collector 11; the outer circumferential surface of each second baffle 14 is coaxially fixedly connected to the corresponding position of the outer wall of the annular cavity 12 of the corresponding heat collector 11, and its inner circumferential surface is spaced apart from the interior of the annular cavity 12 of the corresponding heat collector 11, thereby making the adjacent first baffles 13 and second baffles 14 alternately spaced on the left and right, and through the cooperation of the first baffles 13 and the second baffles 14, the flow of the medium in the annular cavity 12 is slowed down.
[0027] like Figure 1 , Figure 2 As shown, a matching heat insulation layer 17 is coaxially fitted onto the outer circumferential surface of each heat collector 11. Each heat insulation layer is made of asbestos cloth or graphite felt, and its two ends are coaxially flanged towards the center of the top and bottom surfaces of the corresponding heat collector 11, respectively, and do not extend into the coverage area of the corresponding mounting hole. This ensures that the heat insulation layer 17 does not interfere with the action of the heat collector 11 being fitted onto the precast rod tail shank, and the heat insulation layer 17 keeps the corresponding heat collector 11 warm.
[0028] The working principle of this utility model is as follows: First, the collector 1 is coaxially sleeved on the corresponding preformed rod tail, and liquid water is introduced into the annular cavity 12 through the medium inlet pipe 15. At this time, the heat accumulated at the preformed rod tail is transferred to the annular cavity 12, and the liquid water flowing in the flow is heated by heat exchange. The heated liquid water is first collected into the high temperature storage tank 2 through the medium outlet pipe 16, and then enters the steam generator 3 to be transformed into high temperature steam. The high temperature steam does work in the steam turbine 6, converting kinetic energy into electrical energy, which is generated by the generator 7. After the work is completed, the excess steam enters the condenser 5 and is transformed back into liquid water. Then, it is introduced into the annular cavity 12 through the medium inlet pipe 15 by the water pump 4, thus forming a cycle.
[0029] The beneficial effects of this utility model are:
[0030] (1) The present invention can coaxially connect the collector 1 to the tail of the preform rod, thereby recovering and utilizing the heat energy gathered at the tail of the preform rod in real time through heat transfer, thereby improving the energy utilization rate and reducing the production cost of optical fiber.
[0031] (2) By using the first baffle plate 13 and the second baffle plate 14 together, the flow of the medium in the annular cavity 12 can be slowed down, thereby ensuring the heat exchange time and improving the heat exchange effect.
[0032] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the concept and scope of the present utility model. Without departing from the design concept of the present utility model, all modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope of the present utility model. The technical content for which protection is sought in the present utility model has been fully recorded in the technical requirements.
Claims
1. A precast rod tail shank heat recovery system, characterized in that: The system includes a solar collector, a high-temperature thermal storage tank, a steam generator, a feedwater pump, a condenser, a steam turbine, and a generator. A solar collector is coaxially mounted on the tail shank of each precast briquette. The outlets of all the solar collectors are connected to the inlet of the high-temperature thermal storage tank via a pipeline, collecting the heated medium from the solar collectors into the high-temperature thermal storage tank. The outlet of the high-temperature thermal storage tank is connected to the steam turbine via a pipeline through the steam generator. The steam generator converts the high-temperature medium from liquid to gas before sending it to the steam turbine to perform work. The steam turbine is connected to both the generator and the condenser. The generator generates electricity from the work done, and the excess medium is sent back to the condenser to be converted back to liquid. The condenser is connected to the inlet of each solar collector via a pipeline through the feedwater pump, and the cooled medium is returned to the corresponding solar collector, forming a circulation.
2. The precast rod tail shank heat recovery system according to claim 1, characterized in that: The medium is water or a saturated sodium chloride solution.
3. The precast rod tail shank heat recovery system according to claim 1, characterized in that: Each of the aforementioned collectors includes a collector body, a medium inlet pipe, and a medium outlet pipe. Each collector body is a vertically arranged cylindrical structure, and a mounting hole matching the tail shank of a precast rod is coaxially and vertically embedded in the center of its top surface. Each mounting hole coaxially and vertically penetrates the bottom surface of the corresponding collector body, and each collector body is coaxially fitted onto the tail shank of the corresponding precast rod through the mounting hole. An annular cavity is coaxially embedded inside each collector body relative to the outside of the mounting hole, and each annular cavity is not interconnected with the corresponding mounting hole and does not extend beyond the corresponding collector body. On the outer circumference of each collector body… On one side of the collector, near its bottom end, a medium inlet pipe is provided horizontally along the radial direction. One end of each medium inlet pipe is sealed and connected to the bottom end of the corresponding annular cavity, and the other end is connected to the water supply pump through a pipeline. On the other side of the outer circumference of each collector, near its top end, a medium outlet pipe is provided horizontally along the radial direction. The medium outlet pipe and the corresponding medium inlet pipe on the same collector are respectively located on both sides of the corresponding collector. One end of each medium outlet pipe is sealed and connected to the top end of the corresponding annular cavity, and the other end is connected to the high-temperature heat storage tank through a pipeline.
4. The precast rod tail shank heat recovery system according to claim 3, characterized in that: Each of the annular cavities extends towards both ends of the corresponding heat collector, but does not extend beyond the top and bottom surfaces of the corresponding heat collector; the inner diameter of each annular cavity is larger than the diameter of the corresponding mounting hole, and its outer diameter is smaller than the diameter of the corresponding heat collector.
5. The precast rod tail shank heat recovery system according to claim 3, characterized in that: Each of the heat collectors is made of brass material with good thermal conductivity, and its inner wall is covered with a layer of carbon black coating for absorbing heat energy at the position of the mounting hole, thereby transferring the heat accumulated at the tail of the preform to the annular cavity.
6. The precast rod tail shank heat recovery system according to claim 3, characterized in that: Temperature sensors are also connected to each of the medium inlet pipes and each of the medium outlet pipes, and each of the temperature sensors is electrically connected to the water pump, thereby controlling the flow rate of the medium in real time through temperature changes.
7. The precast rod tail shank heat recovery system according to claim 3, characterized in that: It also includes a first baffle and a second baffle; within each annular cavity, a first baffle and a second baffle are arranged alternately from top to bottom, each of the first baffle and the second baffle being a coaxially arranged annular structure, and both being fan-shaped; the outer diameter of each second baffle matches the outer diameter of the corresponding annular cavity, and its inner diameter is larger than the inner diameter of the corresponding annular cavity; the outer diameter of each first baffle is smaller than the outer diameter of the corresponding annular cavity, and its inner diameter matches the inner diameter of the corresponding annular cavity; the uppermost first baffle is located below the corresponding medium outlet pipe, and the lowermost... The second baffle is located above the corresponding medium inlet pipe; the inner circumferential surface of each first baffle is coaxially fixedly connected to the inner wall of the annular cavity of the corresponding heat collector, and its outer circumferential surface is spaced apart from the outer wall of the annular cavity of the corresponding heat collector; the outer circumferential surface of each second baffle is coaxially fixedly connected to the corresponding position of the outer wall of the annular cavity of the corresponding heat collector, and its inner circumferential surface is spaced apart from the interior of the annular cavity of the corresponding heat collector, thereby making the adjacent first baffles and second baffles staggered left and right, and reducing the flow speed of the medium in the annular cavity through the cooperation of the first baffles and second baffles.
8. The precast rod tail shank heat recovery system according to claim 3, characterized in that: It also includes a heat insulation layer; a matching heat insulation layer is coaxially sleeved on the outer circumferential surface of each of the heat collectors. Each heat insulation layer is made of asbestos cloth or graphite felt, and its two ends are coaxially flanged towards the center of the top and bottom surfaces of the corresponding heat collectors, respectively, and neither extends into the coverage area of the corresponding mounting hole, thereby ensuring that the heat insulation layer does not interfere with the action of the heat collector being sleeved on the precast rod tail shank, and the heat insulation layer keeps the corresponding heat collectors warm.