A galvanizing line annealing furnace waste heat recycling device

Abstract

The utility model provides a galvanization line annealing furnace waste heat recycling device, including main transducer pipe, be connected with the auxiliary transducer pipe on the main transducer pipe, be connected with the inlet pipe and transition pipe on the main transducer pipe, the transition pipe one side is connected on the auxiliary transducer pipe through the intercommunication inlet pipe, the transition pipe one end is connected with the buffer tube, install the valve sleeve frame in the buffer tube, install the control valve sleeve on the valve sleeve frame, the control valve sleeve is swinged to be connected with the valve rod, the valve rod one end penetrates control valve sleeve, and fixedly connected with the sealing plug, be connected with the outlet pipe on the buffer tube, the utility model discloses through setting up main transducer pipe and auxiliary transducer pipe, realize to annealing furnace waste heat utilization, utilize circulating water pump to connect lye circulating tank, and with transducer pipe connection, the reagent in lye circulating tank is heated in circulation, thereby effectively recovers annealing furnace waste heat, reduces energy waste.

Description

Technical Field

[0001] This utility model belongs to the field of annealing furnace waste heat recovery, specifically a waste heat recovery and utilization device for galvanizing line annealing furnaces. Background Technology

[0002] The galvanizing annealing furnace is the core equipment in the hot-dip galvanizing production line. It is mainly used for the annealing treatment of strip steel to optimize the coating performance. By heating (up to 900℃) and cooling, the hardness of the strip steel is controlled, reducing the generation of iron oxide powder and reducing zinc consumption. Currently, the waste heat from galvanizing annealing furnaces is divided into two parts: one part is drawn by the exhaust fan to the waste heat boiler to produce steam and discharged outside the workshop; the other part is left untreated, and the heat is directly released into the surrounding environment, resulting in a waste of heat.

[0003] In summary, this utility model provides a waste heat recovery and utilization device for annealing furnaces in galvanizing lines to solve the above-mentioned problems. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a waste heat recovery and utilization device for annealing furnaces in galvanizing lines, thereby solving the problem of heat being directly dissipated into the surrounding environment and wasting heat in the prior art.

[0005] A waste heat recovery and utilization device for a galvanizing line annealing furnace includes a main transducer pipe, an auxiliary transducer pipe connected to the main transducer pipe, an inlet pipe and a transition pipe connected to the main transducer pipe, one side of the transition pipe being connected to the auxiliary transducer pipe via a connecting inlet pipe, a buffer pipe connected to one end of the transition pipe, a valve sleeve frame installed inside the buffer pipe, a control valve sleeve installed on the valve sleeve frame, a valve stem movably connected to the control valve sleeve, one end of the valve stem penetrating the control valve sleeve and fixedly connected to a sealing plug, an outlet pipe connected to the buffer pipe, the auxiliary transducer pipe being connected to the outlet pipe via a connecting outlet pipe, a sealing ring installed inside the outlet pipe, and the sealing plug contacting the sealing ring.

[0006] Furthermore, the control valve sleeve is filled with asbestos, one end of the valve stem passes through the control valve sleeve and is inserted into the asbestos, and a piston plate is fixedly sleeved on the surface of the valve stem. The piston plate is disposed inside the control valve sleeve and covers the surface of the asbestos.

[0007] Furthermore, one end of the valve stem away from the control valve sleeve moves through the valve sleeve bracket and connects with the sealing plug, which is located at the bottom of the sealing ring.

[0008] Furthermore, the valve sleeve frame contacts the inner wall of the buffer tube, and a connecting hole is provided on the valve sleeve frame.

[0009] Furthermore, the inlet pipe and the transition pipe are respectively located at opposite ends of the main transducer pipe, and the connecting inlet pipe connects the transition pipe and the auxiliary transducer pipe.

[0010] Furthermore, one end of the connecting pipe is connected to the liquid outlet pipe, and the buffer pipe is connected to the transition pipe and the liquid outlet pipe.

[0011] Furthermore, multiple baffles are installed inside the main transducer tube, and the baffles are equidistantly installed inside the main transducer tube, with multiple through holes formed on the baffles.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model utilizes the waste heat of the annealing furnace by setting up a main energy exchanger tube and an auxiliary energy exchanger tube. A circulating water pump is connected to the alkali circulation tank and then to the energy exchanger tube to circulate and heat the reagents in the alkali circulation tank, thereby effectively recovering the waste heat of the annealing furnace and reducing energy waste.

[0013] 2. This invention extends the liquid flow path within the main transducer tube through a baffle design, increasing heat exchange time and improving heat recovery efficiency. Simultaneously, the cooperation between the control valve sleeve and valve stem allows for precise control of the liquid flow rate, ensuring stable system operation. The buffer tube effectively balances liquid pressure fluctuations, preventing equipment damage or decreased heat exchange efficiency due to pressure changes. Furthermore, the auxiliary transducer tube further enhances thermal energy utilization efficiency, making waste heat recovery more comprehensive. This device has a compact structure, is easy to install and maintain, and is suitable for various annealing furnace scenarios in galvanizing lines, providing reliable technical support for industrial energy conservation and consumption reduction.

[0014] 3. This utility model reduces the amount of external steam used and lowers production costs through the design of the transducer tube. The device achieves efficient waste heat recovery and utilization. The combination of the main and auxiliary transducer tubes not only improves heat exchange efficiency but also optimizes the overall system stability. The asbestos material filling the control valve sleeve utilizes the principle of thermal expansion and contraction to control the extension and retraction of the valve stem. The temperature rise and fall of the internal liquid regulates the liquid flow path, ensuring the reliability and durability of the device in high-temperature environments. The tight contact design of the control valve sleeve with the sealing plug and sealing ring adjusts the liquid outlet, improving the equipment's safety performance. Attached Figure Description

[0015] Figure 1 This utility model is a three-dimensional Figure 1 ; Figure 2 This utility model is a three-dimensional Figure 2 ; Figure 3 This is a three-dimensional view of the internal structure of the control valve sleeve of this utility model; Figure 4 This is a three-dimensional view of the internal structure of the main transducer tube of this utility model; Figure 5This is a diagram showing the valve stem in the closed state of this utility model; Figure 6 This is a diagram showing the valve stem in the open state of this utility model.

[0016] In the picture: 1. Main transducer tube; 2. Auxiliary transducer tube; 3. Connecting outlet tube; 4. Inlet tube; 5. Transition tube; 6. Outlet tube; 7. Buffer tube; 8. Connecting inlet tube; 9. Control valve sleeve; 10. Valve sleeve bracket; 11. Valve stem; 12. Sealing ring; 13. Sealing plug; 14. Baffle plate. Detailed Implementation

[0017] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but should not be used to limit the scope of this utility model.

[0018] like Figure 1-6 As shown, this utility model provides a waste heat recovery and utilization device for a galvanizing line annealing furnace, including a main transducer pipe 1, an auxiliary transducer pipe 2 connected to the main transducer pipe 1, an inlet pipe 4 and a transition pipe 5 connected to the main transducer pipe 1, one side of the transition pipe 5 being connected to the auxiliary transducer pipe 2 via a connecting inlet pipe 8, one end of the transition pipe 5 being connected to a buffer pipe 7, a valve sleeve bracket 10 installed inside the buffer pipe 7, a control valve sleeve 9 installed on the valve sleeve bracket 10, a valve stem 11 movably connected to the control valve sleeve 9, one end of the valve stem 11 penetrating the control valve sleeve 9 and being fixedly connected to a sealing plug 13, an outlet pipe 6 connected to the buffer pipe 7, the auxiliary transducer pipe 2 being connected to the outlet pipe 6 via a connecting outlet pipe 3, a sealing ring 12 installed inside the outlet pipe 6, and the sealing plug 13 contacting the sealing ring 12.

[0019] In one embodiment of this utility model, the control valve sleeve 9 is filled with asbestos, one end of the valve stem 11 passes through the control valve sleeve 9 and is inserted into the asbestos, and a piston plate is fixedly sleeved on the surface of the valve stem 11. The piston plate is disposed inside the control valve sleeve 9 and covers the surface of the asbestos.

[0020] In one embodiment of this utility model, the end of the valve stem 11 away from the control valve sleeve 9 movably passes through the valve sleeve frame 10 and is connected to the sealing plug 13, which is located at the bottom of the sealing ring 12.

[0021] In one embodiment of this utility model, the valve sleeve 10 is in contact with the inner wall of the buffer tube 7, and a connecting hole is provided on the valve sleeve 10.

[0022] In one embodiment of this utility model, the liquid inlet pipe 4 and the transition pipe 5 are respectively arranged at opposite ends of the main transducer pipe 1, and the inlet pipe 8 connects the transition pipe 5 and the auxiliary transducer pipe 2.

[0023] In one embodiment of this utility model, one end of the connecting pipe 3 is connected to the liquid outlet pipe 6, and the buffer pipe 7 connects the transition pipe 5 and the liquid outlet pipe 6.

[0024] As one embodiment of this utility model, a plurality of baffles 14 are installed inside the main transducer tube 1. The baffles 14 are installed at equal intervals inside the main transducer tube 1, and a plurality of through holes are provided on the baffles 14.

[0025] Specific working principle: Assemble a waste heat recovery (heat exchange) device by combining an alkali-resistant circulating pump, an alkali-resistant heat exchanger (self-made), and piping. Based on the actual production situation on site, the waste heat released from the annealing furnace is used to heat the reagents in the alkali circulation tank of the cleaning section. After the reagents are prepared in the alkali circulation tank, the valve of the alkali circulation tank is opened, the circulation pump is connected, and the circulation pump is turned on. The reagents in the alkali circulation tank are introduced into the tank through the inlet pipe of the main transducer 1. After passing through the waste heat (flame) of the annealing furnace, they flow into the auxiliary transducer 2 through the transition pipe 5 of the main transducer. After passing through the auxiliary transducer 2 again, they flow back into the alkali circulation tank through the outlet pipe 6 via the outlet pipe 3. The process of repeated circulation and heating is carried out to ensure that the reagents in the alkali circulation tank meet the process operating temperature. During heating, if the temperature of the liquid being heated in the main transducer tube 1 is too high, the liquid will heat the asbestos inside the control valve sleeve 9. The asbestos will expand, pushing the valve stem 11 downwards, and the sealing plug 13 will move away from the sealing ring 12. Figure 6 Then the transition pipe 5 is connected to the outlet pipe 6, and after being heated by the main transducer pipe 1, it is directly discharged. If the temperature is not reached, the valve stem 11 returns to its original position, and the sealing plug 13 blocks the sealing ring 12. Figure 5 Then the liquid is heated again through the auxiliary transducer tube 2 and discharged into the outlet tube 6.

[0026] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.

Claims

1. A waste heat recovery and utilization device for a galvanizing line annealing furnace, comprising a main transducer (1), characterized in that: The main transducer tube (1) is connected to an auxiliary transducer tube (2). The main transducer tube (1) is connected to an inlet tube (4) and a transition tube (5). One side of the transition tube (5) is connected to the auxiliary transducer tube (2) through a connecting inlet tube (8). One end of the transition tube (5) is connected to a buffer tube (7). A valve sleeve bracket (10) is installed inside the buffer tube (7). A control valve sleeve (9) is installed on the valve sleeve bracket (10). A valve stem (11) is movably connected to the control valve sleeve (9). One end of the valve stem (11) passes through the control valve sleeve (9) and is fixedly connected to a sealing plug (13). The buffer tube (7) is connected to an outlet tube (6). The auxiliary transducer tube (2) is connected to the outlet tube (6) through a connecting outlet tube (3). A sealing ring (12) is installed inside the outlet tube (6). The sealing plug (13) is in contact with the sealing ring (12).

2. The waste heat recovery and utilization device for the annealing furnace of the galvanizing line as described in claim 1, characterized in that: The valve sleeve (9) is filled with asbestos. One end of the valve stem (11) passes through the valve sleeve (9) and is inserted into the asbestos. A piston plate is fixedly sleeved on the surface of the valve stem (11). The piston plate is set inside the valve sleeve (9) and covers the surface of the asbestos.

3. The waste heat recovery and utilization device for the annealing furnace of the galvanizing line as described in claim 1, characterized in that: One end of the valve stem (11) away from the control valve sleeve (9) moves through the valve sleeve frame (10) and is connected to the sealing plug (13), which is located at the bottom of the sealing ring (12).

4. The waste heat recovery and utilization device for the annealing furnace of the galvanizing line as described in claim 1, characterized in that: The valve sleeve (10) is in contact with the inner wall of the buffer tube (7), and the valve sleeve (10) has a connecting hole.

5. The waste heat recovery and utilization device for the annealing furnace of the galvanizing line as described in claim 1, characterized in that: The inlet pipe (4) and the transition pipe (5) are respectively located at opposite ends of the main transducer pipe (1), and the connecting inlet pipe (8) connects the transition pipe (5) and the auxiliary transducer pipe (2).

6. The waste heat recovery and utilization device for the annealing furnace of the galvanizing line as described in claim 1, characterized in that: One end of the connecting pipe (3) is connected to the liquid outlet pipe (6), and the buffer pipe (7) is connected to the transition pipe (5) and the liquid outlet pipe (6).

7. The waste heat recovery and utilization device for the annealing furnace of the galvanizing line as described in claim 1, characterized in that: Multiple baffles (14) are installed inside the main transducer tube (1). The baffles (14) are installed at equal intervals inside the main transducer tube (1). Multiple through holes are provided on the baffles (14).

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