A cooling system with alarm protection function for metal smelting furnace

Abstract

The present application relates to a cooling system with an alarm protection function for a metal smelting furnace, belonging to the technical field of metallurgical furnaces, which includes a cooling mechanism installed on a furnace body and an alarm protection mechanism installed on the cooling mechanism, the cooling mechanism includes a cooling shell wrapped around the outside of the furnace body, a water inlet pipe and a water outlet pipe are installed through the cooling shell, a group of alarm protection mechanisms are installed on the water inlet pipe and the water outlet pipe respectively, each group of the alarm protection mechanisms includes a turbine flowmeter and a solenoid valve, the turbine flowmeter is electrically connected to an integrator, the integrator is electrically connected to a control host, and the control host is electrically connected to the solenoid valve. The present application has the effect of reducing the explosion caused by cooling water leakage when cooling water enters the furnace body.

Description

Technical Field

[0001] The present application relates to the technical field of metallurgical furnaces, and in particular to a cooling system with an alarm protection function for a metal smelting furnace. Background Art

[0002] Metal smelting furnaces are usually used to roast or smelt ores to extract metals from the ores. Metal smelting furnaces are mostly made of metal.

[0003] At present, relevant metal smelting furnaces, such as the Chinese patent with authorization announcement number CN205403475U, disclose a water-cooled metal smelting furnace, including a furnace body, a heat-insulating base is provided at the bottom of the furnace body, the furnace body includes a furnace lining, a furnace shell is provided above the furnace lining, and a water-cooling device is provided on the inner side of the furnace shell, the water-cooling device includes an outer water-cooling tube and an inner water-cooling tube, both the outer water-cooling tube and the inner water-cooling tube are spiral-shaped, the inner water-cooling tube is located on the inner side of the outer water-cooling tube and is connected with the outer water-cooling tube, a sealing plate is welded between the pipes in the outer water-cooling tube, and a gap is left between the upper and lower adjacent pipes of the outer water-cooling tube.

[0004] In the related art, the cooling device of the metal smelting furnace is cooled by circulating cooling water. If a local water leakage occurs in this cooling device, if it is not discovered in time, the leaked cooling water may enter the furnace body. When the high-temperature molten iron in the furnace encounters the cooling water, it is easy to explode, posing a major safety hazard. Summary of the invention

[0005] In order to reduce the explosion caused by cooling water leakage when cooling water enters the furnace body, a cooling system with alarm protection function is provided for a metal smelting furnace.

[0006] The present application provides a cooling system with alarm protection function for a metal smelting furnace, which adopts the following technical solution:

[0007] A cooling system with an alarm protection function for a metal smelting furnace comprises a cooling mechanism installed on a furnace body and an alarm protection mechanism installed on the cooling mechanism, wherein the cooling mechanism comprises a cooling shell wrapped around the outside of the furnace body, a water inlet pipe and a water outlet pipe are installed through the cooling shell, a group of alarm protection mechanisms are respectively installed on the water inlet pipe and the water outlet pipe, each group of the alarm protection mechanisms comprises a turbine flowmeter and a solenoid valve, the turbine flowmeter is electrically connected to an integrator, the integrator is electrically connected to a control host, and the control host is electrically connected to the solenoid valve.

[0008] By adopting the above technical solution, turbine flowmeters are installed at the water inlet and outlet pipes to measure the inlet and outlet water flow. The measured flow will be input into the integrator to display the current flow value. The flow value output by the integrator is collected by the control host and the collected inlet and outlet water flow values ​​are compared. If the flow difference exceeds the allowable range, the control host outputs an alarm signal and a tripping stop signal. If a water leak occurs, the alarm protection mechanism can be set to monitor in time and automatically realize the alarm and stop operation, thereby reducing the explosion caused by cooling water leakage into the furnace body.

[0009] Optionally, the cooling shell includes a first cooling plate wrapped around the outer wall of the furnace body, the first cooling plate is arranged along the length direction of the furnace body, the side of the first cooling plate away from the furnace body is wrapped with a second cooling plate, and both ends of the first cooling plate are fixedly connected with ring plates, the side of the ring plate away from the first cooling plate is fixedly connected to the second cooling plate, the first cooling plate and the second cooling plate are spaced apart, and the water inlet pipe and the water outlet pipe are through-installed on the second cooling plate.

[0010] By adopting the above technical solution, the first cooling plate, the second cooling plate and the ring plate are welded together to form a cooling shell, and the introduction of cooling water helps to increase the contact area with the furnace body, thereby improving the cooling effect of the cooling mechanism.

[0011] Optionally, the first cooling plate and the second cooling plate both have welds parallel to the length direction of the furnace body, and sealing plates are fixed on the first cooling plate and the second cooling plate. The sealing plates are located on the side where the first cooling plate and the second cooling plate are close to each other, the sealing plates are opposite to the positions of the welds, and the sealing plates are fixed along the length direction of the welds.

[0012] By adopting the above technical solution, since the first cooling plate and the second cooling plate are both rectangular plates that are wrapped and welded to the outside of the furnace body, welds are inevitably present on the cooling shell. In order to reduce the leakage of circulating cooling water from the welds after long-term use, the sealing plate blocks the welds to reduce the direct contact between the cooling water and the welds, thereby reducing the leakage of cooling water from the welds.

[0013] Optionally, two parallel sides of the sealing plate are fixedly connected to the first cooling plate or the second cooling plate, the middle of the sealing plate bulges away from the weld, and both ends of the sealing plate are fixedly connected to the ring plate.

[0014] By adopting the above technical solution, the sealing plate bulges away from the weld to further enhance the protection effect on the weld, and the sealing plate and the wall surface of the first cooling plate or the second cooling plate form a stable triangular structure to reduce the leakage of cooling water from the weld.

[0015] Optionally, a sealing strip is filled between the sealing plate and the first cooling plate or the second cooling plate, and the sealing strip is made of rubber.

[0016] By adopting the above technical solution, the sealing strip further enhances the sealing performance at the weld and reduces the leakage of cooling water from the weld.

[0017] Optionally, the cooling mechanism also includes a rotating shaft rotatably installed in the water inlet pipe, a rotating blade is fixed to one end of the rotating shaft away from the furnace body, and a first bevel gear is coaxially fixed to the other end, the first bevel gear is meshed with a second bevel gear, and a reciprocating screw is coaxially fixed to the second bevel gear, the reciprocating screw is arranged along the length direction of the cooling shell, and the end of the reciprocating screw away from the second bevel gear is rotatably connected to a ring plate, a slider is meshed on the reciprocating screw, a disturbance ring is fixedly installed on the slider, the axis of the disturbance ring and the axis of the furnace body are located in the same straight line, and the disturbance ring is located between the two sealing plates.

[0018] By adopting the above technical solution, during the water intake process of the water inlet pipe, the flow of water drives the rotating blades to rotate, and the transmission action of the first bevel gear and the second bevel gear causes the slider to slide back and forth along the length direction of the reciprocating screw. At the same time, the side of the disturbance ring away from the slider is limited by two sealing plates, so that the disturbance ring can slide up and down stably in the cooling shell, vertically disturbing the cooling water in the cooling shell, thereby further achieving a cooling effect on the furnace body.

[0019] Optionally, the disturbance ring is further provided with a plurality of disturbance holes, and the axes of the disturbance holes are parallel to the sliding direction of the disturbance ring.

[0020] By adopting the above technical solution, a plurality of disturbance holes are opened on the disturbance ring, which helps to reduce the resistance of the disturbance ring when it slides vertically, while improving the disturbance effect on the cooling water in the cooling shell, further improving the cooling effect on the furnace body.

[0021] Optionally, a disturbance bar is fixed to the inner wall of each disturbance hole, and the disturbance bar is spirally arranged along the length direction of the disturbance hole.

[0022] By adopting the above technical solution, when water flows through the disturbance hole, the spirally arranged disturbance strips guide the flow direction of the water, so that the water flowing through the disturbance hole is in a swirling shape, further improving the cooling effect.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] By installing turbine flowmeters at the water inlet and outlet pipes to measure the inlet and outlet water flow, and inputting the current flow value into the integrator to display the current flow value, the control host collects the flow value output by the integrator and compares the collected inlet and outlet water flow values. If the flow difference exceeds the allowable range, the control host outputs an alarm signal and a tripping and stopping operation signal; when a water leak occurs, the alarm protection mechanism can monitor in time and automatically realize an alarm and stop operation, thereby reducing the cooling water leakage caused by cooling water entering the furnace body and causing explosion;

[0025] The disturbance ring slides up and down stably in the cooling shell, vertically disturbing the cooling water in the cooling shell, further achieving a cooling effect on the furnace body;

[0026] A plurality of disturbance holes are provided on the disturbance ring, which helps to reduce the resistance of the disturbance ring when it slides vertically, and at the same time improves the disturbance effect on the cooling water in the cooling shell, further improving the cooling effect on the furnace body;

[0027] The spirally arranged disturbance strips guide the flow direction of the water flow, so that the water flow passing through the disturbance hole is in a swirling shape, further improving the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram embodying the furnace body, cooling mechanism and alarm protection mechanism of the present application.

[0029] Figure 2 It is a cross-sectional schematic diagram embodying the furnace body and cooling mechanism of the present application.

[0030] Figure 3 The first cooling plate and the second cooling plate of the present invention are Figure 2 A partial enlarged view of point A in the middle.

[0031] Figure 4 It is a cross-sectional schematic diagram embodying the cooling mechanism of the present application.

[0032] Figure 5 The present application is to cool the housing in Figure 4 A partial enlarged view of point B in the middle.

[0033] Explanation of the reference numerals: 1. furnace body; 11. feed pipe; 12. discharge pipe; 121. discharge valve; 2. cooling mechanism; 21. cooling shell; 211. first cooling plate; 212. ring plate; 2121. rotating block; 213. second cooling plate; 214. welding seam; 215. sealing plate; 216. sealing strip; 22. water inlet pipe; 221. mounting seat; 23. water outlet pipe; 24. rotating shaft; 25. rotating blade; 26. first bevel gear; 27. second bevel gear; 28. reciprocating screw; 281. slider; 29. ​​disturbance ring; 291. notch; 292. disturbance hole; 293. disturbance strip; 3. alarm protection mechanism; 31. turbine flowmeter; 32. solenoid valve. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-5 This application is described in further detail.

[0035] The embodiment of the present application discloses a cooling system with an alarm protection function for a metal smelting furnace.

[0036] Reference Figure 1 A cooling system with an alarm protection function for a metal smelting furnace includes a cooling mechanism 2 installed on the outside of a furnace body 1. The cooling mechanism 2 realizes rapid cooling of the furnace body 1 by circulating cooling water, and an alarm protection mechanism 3 is also installed on the cooling mechanism 2. The alarm protection mechanism 3 can monitor whether the cooling mechanism 2 leaks water, thereby reducing the situation where cooling water leaks and causes cooling water to enter the furnace body 1 and cause an explosion.

[0037] The furnace body 1 is vertically arranged and has a cylindrical shape. A feed pipe 11 is connected to the upper end of the furnace body 1 and a discharge pipe 12 is connected to the lower end of the furnace body 1. A discharge valve 121 is installed on the discharge pipe 12 for discharging. After the molten iron in the furnace body 1 is smelted, the discharge can be carried out by opening the discharge valve 121.

[0038] Reference Figure 2 The cooling mechanism 2 includes a cooling shell 21 vertically fixedly installed on the outer wall of the furnace body 1, and the cooling shell 21 wraps the outer wall of the furnace body 1. The cooling shell 21 includes a vertically arranged first cooling plate 211. The first cooling plate 211 is cylindrical, and the axis of the first cooling plate 211 is in the same straight line as the axis of the furnace body 1.

[0039] Reference Figure 1 and Figure 2A ring plate 212 is vertically fixed to both upper and lower ends of the first cooling plate 211. The ring plate 212 extends horizontally in a direction away from the first cooling plate 211. The axis of the ring plate 212 is in the same straight line as the axis of the first cooling plate 211. A second cooling plate 213 is vertically fixed to one end of the ring plate 212 away from the first cooling plate 211. The second cooling plate 213 is cylindrical, so that the second cooling plate 213 is wrapped around the outside of the first cooling plate 211, and a cavity for circulating cooling water to flow is formed between the first cooling plate 211 and the second cooling plate 213.

[0040] The second cooling plate 213 is connected to a side away from the first cooling plate 211 with a horizontally arranged water inlet pipe 22 and a water outlet pipe 23, and the water inlet pipe 22 is located below the water outlet pipe 23. Cooling water enters the cooling shell 21 from the water inlet pipe 22 and flows out from the water outlet pipe 23, thereby realizing the circulation of cooling water. Since the cooling water fills the entire cooling shell 21, the first cooling plate 211 further increases the contact area with the furnace body 1, thereby improving the cooling effect.

[0041] Reference Figure 2 and Figure 3 Since the first cooling plate 211 and the second cooling plate 213 are both cylinders surrounded by rectangular plates, they are usually provided with a vertically arranged weld 214 after being installed on the furnace body 1. After long-term use, in order to reduce the leakage of cooling water in the cooling shell 21 from the weld 214, the first cooling plate 211 and the second cooling plate 213 are both fixed with sealing plates 215, and the sealing plates 215 are vertically fixed at the weld 214. The two sealing plates 215 are located on the side where the first cooling plate 211 and the second cooling plate 213 are close to each other, and the two sealing plates 215 are arranged opposite to each other.

[0042] The two parallel sides of the sealing plate 215 are vertically fixed on the side walls of the first cooling plate 211 and the second cooling plate 213 near the weld 214, and the middle section of the sealing plate 215 bulges away from the weld 214, so that the sealing plate 215 and the first cooling plate 211 or the second cooling plate 213 form a stable structure that is approximately triangular, and the upper and lower ends of the sealing plate 215 are fixed to the ring plate 212, so that the sealing plate 215 has a shielding effect on the weld 214; a rubber sealing strip 216 is filled between the sealing plate 215 and the first cooling plate 211 or the second cooling plate 213 to further reduce the leakage of cooling water from the weld 214.

[0043] Reference Figure 4 and Figure 5The cooling mechanism 2 also includes a rotating shaft 24 horizontally installed in the water inlet pipe 22, a mounting seat 221 is fixedly installed in the water inlet pipe 22, and the rotating shaft 24 is rotatably installed on the mounting seat 221. A rotating blade 25 is fixed at one end of the rotating shaft 24, and the rotating blade 25 is located at the end of the rotating shaft 24 away from the cooling shell 21. When the water inlet pipe 22 feeds cooling water into the cooling shell 21, the rotating blade 25 can drive the rotating shaft 24 to rotate at the same time.

[0044] A first bevel gear 26 is coaxially fixed to one end of the rotating shaft 24 close to the furnace body 1, and a second bevel gear 27 is meshed on the upper side of the first bevel gear 26. A reciprocating screw 28 is coaxially fixed on the second bevel gear 27. The reciprocating screw 28 is vertically arranged between the first cooling plate 211 and the second cooling plate 213. The upper end of the reciprocating screw 28 is rotatably connected to the ring plate 212, and a rotating block 2121 for rotatably connecting to the reciprocating screw 28 is fixed on the ring plate 212. The reciprocating screw 28 can rotate on the rotating block 2121 and will not separate from the rotating block 2121 in the vertical direction.

[0045] The reciprocating screw 28 is meshed with a slider 281. When the rotation direction of the reciprocating screw 28 does not change, the slider 281 can slide up and down along the length direction of the reciprocating screw 28. A disturbance ring 29 is fixedly installed on the slider 281. The disturbance ring 29 is located between the first cooling plate 211 and the second cooling plate 213, and the axis of the disturbance ring 29 is located in the same straight line as the axis of the furnace body 1. The disturbance ring 29 can slide up and down with the slider 281.

[0046] Reference Figure 2 and Figure 3 The side of the disturbance ring 29 away from the slider 281 horizontally passes through the gap between the two sealing plates 215. The inner and outer walls of the disturbance ring 29 are both provided with notches 291 for the sealing plates 215 to be embedded. The raised part of the sealing plates 215 extends into the notches 291. The sealing plates 215 can limit the up and down sliding of the disturbance ring 29.

[0047] When water is taken in by the water inlet pipe 22, the rotating blade 25 rotates under the action of the water flow, causing the first bevel gear 26 to rotate at the same time, and the second bevel gear 27 meshing with the first bevel gear 26 rotates at the same time, thereby realizing the vertical reciprocating sliding of the slider 281 on the reciprocating screw 28, thereby realizing the up and down sliding of the disturbance ring 29. The disturbance ring 29 can disturb the cooling water entering the cooling shell 21, thereby improving the cooling effect on the furnace body 1.

[0048] The disturbance ring 29 is also vertically provided with a plurality of disturbance holes 292 arranged at intervals. The plurality of disturbance holes 292 are evenly distributed along the disturbance ring 29. When the disturbance ring 29 slides up and down in the cooling shell 21, the disturbance holes 292 will reduce the resistance of the disturbance ring 29 sliding up and down, so that the disturbance ring 29 can slide up and down in the cooling shell 21 more stably, thereby enhancing the disturbance effect on the cooling water, and thereby improving the cooling effect on the furnace body 1.

[0049] A spirally arranged disturbance bar 293 is fixed in each disturbance hole 292. The disturbance bar 293 is spirally fixed along the length direction of the disturbance hole 292. When water flows through the disturbance hole 292, the disturbance bar 293 guides the water flow, so that the water flow passing through the disturbance hole 292 is in a swirling shape, further quickly taking away the heat of the furnace body 1, achieving a rapid cooling effect.

[0050] Reference Figure 1 The alarm protection mechanism 3 includes two turbine flow meters 31 and a solenoid valve 32. The two turbine flow meters 31 and the solenoid valve 32 are respectively installed on the water inlet pipe 22 and the water outlet pipe 23. The solenoid valve 32 can realize the opening and closing of the water inlet pipe 22 and the water outlet pipe 23. The model of the turbine flow meter 31 is LWGY-SIN-DN125-YK. Each turbine flow meter 31 is electrically connected to an integrator (not shown in the figure). The model of the integrator is U-HSX2600-LCCN2. The alarm protection mechanism 3 also includes a control host (not shown in the figure) that can receive the electrical signal output by the integrator. The control host is electrically connected to the integrator and the solenoid valve 32, and the control host can control the solenoid valve 32 to open or close.

[0051] The turbine flowmeter 31 installed at the water inlet pipe 22 and the water outlet pipe 23 can measure the flow of the water inlet and outlet pipes 23. The flow measured by the turbine flowmeter 31 will be displayed by the integrator. The control host collects the flow value output by the integrator and compares the collected inlet and outlet water flow values. If the flow difference between the inlet and outlet water exceeds the allowable range, the control host will send out an alarm signal and a tripping stop signal, and control the solenoid valve 32 to close, so as to facilitate subsequent maintenance.

[0052] The implementation principle of a cooling system with an alarm protection function for a metal smelting furnace in an embodiment of the present application is as follows: the alarm protection mechanism 3 determines whether a water leakage occurs by detecting the flow difference between the water inlet pipe 22 and the water outlet pipe 23. When the flow difference exceeds a reasonable range, the control host sends an alarm signal and controls the solenoid valve 32 to close, thereby reducing the leakage of cooling water into the furnace body 1.

[0053] The cooling mechanism 2 can improve the cooling effect on the furnace body 1 and accelerate the cooling of the furnace body 1. The sealing plate 215 reduces the leakage of cooling water in the cooling shell 21 from the weld 214 of the first cooling plate 211 and the second cooling plate 213. The disturbance ring 29 slides up and down in the cooling shell 21 to improve the disturbance effect on the cooling water in the cooling shell 21, and further improve the heat dissipation effect of the furnace body 1. The two sealing plates 215 can also limit the up and down sliding of the disturbance ring 29, and the water flow is in a swirling shape after passing through the disturbance hole 292, further improving the cooling effect.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cooling system with alarm protection function for a metal smelting furnace, characterized in that: The invention comprises a cooling mechanism (2) installed on a furnace body (1) and an alarm protection mechanism (3) installed on the cooling mechanism (2), wherein the cooling mechanism (2) comprises a cooling shell (21) wrapped around the outside of the furnace body (1), a water inlet pipe (22) and a water outlet pipe (23) are installed through the cooling shell (21), a group of alarm protection mechanisms (3) are installed on the water inlet pipe (22) and the water outlet pipe (23), respectively, each group of the alarm protection mechanisms (3) comprises a turbine flowmeter (31) and a solenoid valve (32), the turbine flowmeter (31) is electrically connected to an integrator, the integrator is electrically connected to a control host, and the control host is electrically connected to the solenoid valve (32); The cooling shell (21) comprises a first cooling plate (211) wrapped around the outer wall of the furnace body (1), the first cooling plate (211) being arranged along the length direction of the furnace body (1), a second cooling plate (213) being wrapped around a side of the first cooling plate (211) away from the furnace body (1), and both ends of the first cooling plate (211) are fixedly connected with a ring plate (212), a side of the ring plate (212) away from the first cooling plate (211) is fixedly connected to the second cooling plate (213), the first cooling plate (211) and the second cooling plate (213) are arranged at intervals, and the water inlet pipe (22) and the water outlet pipe (23) are installed on the second cooling plate (213) through-through; The first cooling plate (211) and the second cooling plate (213) are both provided with a weld (214) parallel to the length direction of the furnace body (1); the first cooling plate (211) and the second cooling plate (213) are both fixed with a sealing plate (215); the sealing plate (215) is located on a side where the first cooling plate (211) and the second cooling plate (213) are close to each other; the sealing plate (215) is opposite to the weld (214), and the sealing plate (215) is fixedly arranged along the length direction of the weld (214); The cooling mechanism (2) also includes a rotating shaft (24) rotatably mounted in the water inlet pipe (22); a rotating blade (25) is fixed to one end of the rotating shaft (24) away from the furnace body (1); a first bevel gear (26) is coaxially fixed to the other end; a second bevel gear (27) is meshed with the first bevel gear (26); a reciprocating screw (28) is coaxially fixed to the second bevel gear (27); the reciprocating screw (28) is arranged along the length direction of the cooling shell (21); and one end of the reciprocating screw (28) away from the second bevel gear (27) is rotatably connected to the ring plate (212); a slider (281) is meshed with the reciprocating screw (28); a disturbance ring (29) is fixedly mounted on the slider (281); the axis of the disturbance ring (29) is located in the same straight line as the axis of the furnace body (1); and the disturbance ring (29) is located between the two sealing plates (215).

2. The cooling system with alarm protection function for a metal smelting furnace according to claim 1, characterized in that: The two parallel sides of the sealing plate (215) are fixedly connected to the first cooling plate (211) or the second cooling plate (213), the middle of the sealing plate (215) bulges in a direction away from the welding seam (214), and the two ends of the sealing plate (215) are fixedly connected to the ring plate (212).

3. The cooling system with alarm protection function for a metal smelting furnace according to claim 2 is characterized in that: A sealing strip (216) is filled between the sealing plate (215) and the first cooling plate (211) or the second cooling plate (213), and the sealing strip (216) is made of rubber.

4. The cooling system with alarm protection function for a metal smelting furnace according to claim 3 is characterized in that: The disturbance ring (29) is also provided with a plurality of disturbance holes (292) extending therethrough, and the axes of the disturbance holes (292) are all parallel to the sliding direction of the disturbance ring (29).

5. The cooling system with alarm protection function for a metal smelting furnace according to claim 4, characterized in that: A disturbance bar (293) is fixed to the inner wall of each disturbance hole (292), and the disturbance bar (293) is spirally arranged along the length direction of the disturbance hole (292).

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