CN210596179U - Aluminum alloy T6 heat treatment furnace flue gas waste heat utilization equipment - Google Patents
Aluminum alloy T6 heat treatment furnace flue gas waste heat utilization equipment Download PDFInfo
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- CN210596179U CN210596179U CN201921321338.1U CN201921321338U CN210596179U CN 210596179 U CN210596179 U CN 210596179U CN 201921321338 U CN201921321338 U CN 201921321338U CN 210596179 U CN210596179 U CN 210596179U
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Abstract
A flue gas waste heat utilization device of an aluminum alloy T6 heat treatment furnace comprises a solid solution furnace and an aging furnace of an aluminum alloy T6 heat treatment furnace and a flue system of the solid solution furnace, and is characterized in that high-temperature flue gas of the solid solution furnace is introduced into the aging furnace with lower temperature through a waste heat utilization pipeline, the flue gas is controlled by an electric butterfly valve through monitoring the furnace temperature and the flue gas temperature to realize the supply of the flue gas as required, and the influence of low-temperature flue gas and excessive flue gas on the furnace temperature of the aging furnace is eliminated. The flue gas waste heat utilization system can effectively recover flue gas waste heat, and can effectively ensure the heat treatment quality of workpieces while saving energy and reducing emission.
Description
Technical Field
The utility model relates to a heat treatment furnace waste gas preheats and retrieves technical field, in particular to aluminum alloy T6 heat treatment furnace flue gas waste heat utilization equipment.
Background
The aluminum alloy T6 heat treatment furnace mainly comprises a solution furnace and an aging furnace. The heat treatment temperature in the solution furnace is generally 500 ℃ or higher, and the heat treatment temperature in the aging furnace is usually controlled to 200 ℃. Therefore, the temperature of the flue gas discharged by the solid solution furnace is obviously higher than the heat treatment temperature of the aging furnace, but the flue gas is discharged into the atmosphere by adopting a direct discharge mode in the prior furnace, so that huge waste of energy is caused, and the environment is polluted.
A very small number of aluminum alloy T6 heat treatment furnaces are also provided with flue gas waste heat utilization devices, only solid solution flue gas is simply and directly introduced into the aging furnace, no control is carried out in the whole waste heat utilization process, the heating system is easy to frequently and unstably work, the service life of the combustion system is shortened, the heat treatment quality is influenced, and the workpiece is over-heated.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome prior art defect, provide an aluminum alloy T6 heat treatment furnace flue gas waste heat utilization equipment to this fully improves energy utilization, in its energy saving and consumption reduction, not only can also continue to guarantee the quality of thermal treatment product, and the flue gas waste heat has obtained make full use of moreover.
The purpose of the utility model is realized by the following technical scheme: the device for utilizing the flue gas waste heat of the aluminum alloy T6 heat treatment furnace comprises a T6 heat treatment furnace and a flue system.
The aluminum alloy T6 heat treatment furnace comprises a solution furnace and an aging furnace, wherein at least 1 solution furnace and at least 1 aging furnace are respectively provided with a combustion heating system;
the flue system comprises a solid solution furnace direct exhaust flue, an aging furnace direct exhaust flue, a waste heat utilization pipeline, an electric butterfly valve and a monitoring thermocouple; wherein the waste heat utilization pipeline adopts rock wool or ceramic fiber blanket to carry out heat preservation; the system can independently discharge the flue gas of the solid solution furnace and the aging furnace into the atmosphere, and can also introduce the flue gas in the solid solution furnace into the aging furnace for flue gas waste heat utilization;
when the waste heat utilization device is used, when the measured temperature value of the solid solution furnace flue gas is lower than the preset value, the utilization value is extremely low, so that the solid solution furnace flue gas is directly discharged into the atmosphere, when the temperature value of the solid solution furnace flue gas exceeds the preset value, the discharge trend of the solid solution furnace flue gas needs to be changed, and the solid solution furnace flue gas is introduced into the aging furnace for waste heat utilization. In the waste heat utilization process, the introduced flue gas temperature and the aging furnace gas temperature are monitored and analyzed, and the opening of an electric butterfly valve is controlled according to the analysis result, so that the flow direction and the flow of the flue gas are controlled; the start and stop of the introduction of the flue gas are accurately controlled according to actual requirements, the effectiveness, the accuracy, the flexibility and the adjustability of the utilization of the flue gas are guaranteed through dynamic continuous monitoring control feedback closed-loop control, the interference of the flue gas on the fluctuation of the furnace temperature is eliminated, and the heat treatment performance of products is better guaranteed while the energy utilization efficiency is improved;
drawings
Fig. 1 is a schematic structural diagram of the present invention. The figure includes: the system comprises a solid solution furnace 1, a solid solution furnace gas temperature thermocouple, a solid solution flue gas direct-discharge electric butterfly valve 3, a solid solution furnace direct-discharge flue 4, a waste heat utilization pipeline 5, a waste heat utilization pipeline 6, a waste heat utilization pipeline flue gas temperature thermocouple, a waste heat utilization butterfly valve 7, an aging furnace gas temperature thermocouple 8 and an aging furnace flue gas direct-discharge butterfly valve 9, wherein the solid solution furnace gas temperature thermocouple is arranged in the solid solution furnace; 10 is an aging direct-exhaust flue, and 11 is an aging furnace.
Detailed Description
The following further illustrates the embodiments of the present invention with reference to the examples given in fig. 1.
The novel device and the method for utilizing the flue gas waste heat of the aluminum alloy T6 heat treatment furnace are characterized in that the device is shown in figure 1 and specifically comprises a solid solution furnace gas temperature thermocouple 2, a solid solution flue gas direct discharge electric butterfly valve 3, a solid solution furnace direct discharge flue 4, a waste heat utilization pipeline 5, a waste heat utilization butterfly valve 7, an aging furnace gas temperature thermocouple 8, an aging furnace flue gas direct discharge butterfly valve 9 and an aging direct discharge flue 10, wherein: the probe of the solid solution furnace gas temperature thermocouple 2 penetrates through the furnace wall of the solid solution furnace 1 and extends into the solid solution furnace 1, the probe of the aging furnace gas temperature thermocouple 8 penetrates through the furnace wall of the aging furnace 11 and extends into the aging furnace 11, the residual heat utilization pipeline flue gas temperature thermocouple 6 is arranged on the residual heat utilization pipeline 5 and is used for measuring the flue gas temperature in the residual heat utilization pipeline, one end of the residual heat utilization pipeline 5 is communicated with the solid solution furnace direct exhaust flue 4, the other end of the residual heat utilization pipeline penetrates through the pipe wall of the aging furnace 11 and is communicated with the upper space of the aging furnace 11, the middle section of the residual heat utilization pipeline 5 is provided with a residual heat utilization butterfly valve 7, the solid solution furnace direct exhaust flue 4 communicated with the solid solution furnace 1 is provided with a solid solution flue gas direct exhaust electric butterfly valve 3, the aging furnace flue gas direct exhaust butterfly valve 9 is arranged on the aging furnace direct exhaust flue 10 communicated with the aging furnace 11, and rock wool or ceramic fiber, and preserving the heat of the steel.
The device is used by adopting the following method:
1. firstly, setting critical values of a furnace gas temperature thermocouple 2 of a solid solution furnace, a flue gas temperature thermocouple 6 of a waste heat utilization pipeline and a furnace gas temperature thermocouple 8 of an aging furnace;
2. strictly monitoring the real-time data of each thermocouple, and carrying out specific operation according to the data measured by each thermocouple;
3. when the temperature value measured by the furnace gas temperature thermocouple 2 of the solid solution furnace is greater than a preset critical value (such as 400 ℃) and the temperature detected by the furnace gas temperature thermocouple 8 of the aging furnace is less than a certain preset critical value (such as the upper limit value of the temperature setting of the aging furnace is 200 ℃), closing the solid solution flue gas direct-discharge electric butterfly valve 3, simultaneously opening the waste heat utilization butterfly valve 7, changing the flue gas flow direction of the solid solution furnace 1, and enabling the flue gas to enter the aging furnace 11 through the waste heat utilization pipeline 5 for waste heat utilization;
4. within a period of time (such as within 2 minutes) after the flue gas waste heat utilization begins, the value of the flue gas temperature thermocouple 6 of the waste heat utilization pipeline is continuously larger than a preset critical value (such as the upper limit of the furnace temperature of the aging furnace is set to be 200+50 ℃), and then the flue gas waste heat utilization is continuously carried out.
5. When the value of the residual heat utilization pipeline flue gas temperature thermocouple 6 is continuously smaller than a certain value (for example, the upper limit of the aging furnace temperature is set to be 200+50 ℃), opening the solid solution flue gas direct discharge electric butterfly valve 3 and closing the residual heat utilization butterfly valve 7, directly discharging the solid solution furnace flue gas through the solid solution furnace direct discharge flue 4, and stopping the utilization of the flue gas residual heat; the supercooled flue gas is prevented from entering the aging furnace to reduce the temperature of furnace gas of the aging furnace;
6. when the thermocouple 8 for the furnace gas temperature of the aging furnace detects that the temperature value of the furnace gas of the aging furnace is larger than a certain preset critical value (such as the upper limit value of the process temperature of the aging furnace is 200 ℃), the solid solution flue gas direct discharge electric butterfly valve 3 is opened, the residual heat utilization butterfly valve 7 is closed, the solid solution flue gas is directly discharged through the solid solution flue gas direct discharge flue 4, and the residual heat utilization of the flue gas is stopped; the phenomenon that excessive high-temperature flue gas continuously enters the aging furnace 11 to cause the temperature of furnace gas to be ultrahigh and influence the heat treatment quality of workpieces is avoided.
7. The opening angle of the flue gas direct-discharge butterfly valve 9 of the aging furnace is related to the utilization quantity of the flue gas, wherein when the flue gas waste heat utilization system and the heating system of the aging furnace work simultaneously, the flue gas direct-discharge butterfly valve 9 of the aging furnace needs to be opened by 100 percent, and the opening degree of a valve plate is 90 degrees; when only the flue gas waste heat of the solid solution furnace 1 is utilized and the heating system of the aging furnace 11 does not work, the aging furnace flue gas direct-discharging butterfly valve 9 can convert the ratio of the waste heat flue gas to the total flue gas amount (when the flue gas of the solid solution furnace and the aging furnace are independently discharged, the total amount of the flue gas generated by the heating system of the solid solution furnace and the aging furnace) to carry out angle setting (if the ratio of the waste heat utilization flue gas to the total flue gas is 60: 100, the opening degree of the butterfly valve is 90 degrees or 60/100 degrees or 54 degrees), and the opening angle of the plate valve is properly adjusted according to actual conditions, so that the flue gas is prevented from carrying away too much heat, and the waste heat utilization.
The implementation and use of the device bring obvious economic effect. The main points are as follows:
(1) the energy utilization efficiency is improved, the overall energy consumption of the equipment is reduced, and the emission of waste heat is reduced;
(2) the proportion of the waste heat utilization system is continuously and automatically adjusted and automatically interrupted, and the stability of the process temperature in the waste heat utilization process is ensured, so that the process reliability of the product is improved, and the excellent performance and reliable quality of the product are ensured; further eliminating the generation of defective products;
(3) the whole process is automatically controlled, and the manpower requirement in the using process is reduced.
Claims (1)
1. The utility model provides an aluminum alloy T6 heat treatment furnace flue gas waste heat utilization equipment, characterized by this kind of utilization equipment include solid solution furnace burner gas temperature thermocouple 2, solid solution flue gas direct discharge electric butterfly valve 3, solid solution furnace direct discharge flue 4, waste heat utilization pipeline 5, waste heat utilization butterfly valve 7, ageing furnace burner gas temperature thermocouple 8, ageing furnace flue gas direct discharge butterfly valve 9, ageing direct discharge flue 10, wherein: the probe of the solid solution furnace gas temperature thermocouple 2 penetrates through the furnace wall of the solid solution furnace 1 and extends into the solid solution furnace 1, the probe of the aging furnace gas temperature thermocouple 8 also penetrates through the furnace wall of the aging furnace 11 and extends into the aging furnace 11, the residual heat utilization pipeline flue gas temperature thermocouple 6 is arranged on the residual heat utilization pipeline 5, used for measuring the temperature of the flue gas in the waste heat utilization pipeline, one end of the waste heat utilization pipeline 5 is communicated with the solid solution furnace direct exhaust flue 4, the other end of the waste heat utilization pipeline penetrates through the pipe wall of the aging furnace 11 and is communicated with the upper space of the aging furnace 11, a waste heat utilization butterfly valve 7 is arranged in the middle section of the waste heat utilization pipeline 5, a solid solution flue gas direct exhaust electric butterfly valve 3 is arranged on the solid solution furnace direct exhaust flue 4 communicated with the solid solution furnace 1, an aging furnace flue gas direct exhaust butterfly valve 9 is arranged on the aging direct exhaust flue 10 communicated with the aging furnace, meanwhile, rock wool or ceramic fiber blankets are packaged on the residual heat utilization pipeline 5 and the flue 4 from the interface of the solid solution furnace 1 to the pipeline 5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921321338.1U CN210596179U (en) | 2019-08-15 | 2019-08-15 | Aluminum alloy T6 heat treatment furnace flue gas waste heat utilization equipment |
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| CN201921321338.1U CN210596179U (en) | 2019-08-15 | 2019-08-15 | Aluminum alloy T6 heat treatment furnace flue gas waste heat utilization equipment |
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| CN210596179U true CN210596179U (en) | 2020-05-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110343834A (en) * | 2019-08-15 | 2019-10-18 | 沈阳东大三建工业炉制造有限公司 | A kind of 6 heat-treatment furnace flue gas waste heat utilization device of aluminum alloy T and method |
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2019
- 2019-08-15 CN CN201921321338.1U patent/CN210596179U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110343834A (en) * | 2019-08-15 | 2019-10-18 | 沈阳东大三建工业炉制造有限公司 | A kind of 6 heat-treatment furnace flue gas waste heat utilization device of aluminum alloy T and method |
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