Hot rolled thin strip laminar cooling water control device

Abstract

The utility model discloses a laminar cooling water control device for hot-rolled thin strip steel, which relates to the technical field of strip steel processing, and comprises a frame and a conveying assembly arranged thereon for conveying the strip steel, wherein the frame is provided with a cold water tank, and the cold water tank is provided with a cooling assembly for laminar cooling the strip steel conveyed on the frame, and the cooling assembly is provided with a slow-flow assembly for slowing down the impact pressure of the water flow; the slow-flow assembly comprises a sleeve installed on the inner wall of the cooling assembly pipeline and an impeller rotatably installed inside the sleeve. When the fluid used for cooling enters the cooling assembly, the utility model utilizes the flow of the fluid to drive the impeller to rotate, converts part of the kinetic energy of the fluid into the kinetic energy of the impeller rotation, reduces the impact of the fluid on the inside of the cooling assembly, and is beneficial to protecting the cooling assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of strip steel processing, in particular to a laminar cooling water volume control device for hot-rolled thin strip steel. Background Art

[0002] During the production process, hot-rolled thin strip steel needs to be cooled by a laminar cooling system to control its temperature and organizational structure to meet product performance requirements. Laminar cooling is achieved by controlling the cooling water flow and nozzle arrangement to achieve uniform cooling of the strip surface and core, so as to achieve the purpose of controlling the steel structure and performance.

[0003] In the existing laminar cooling process of steel strip, it is necessary to adjust the flow rate and temperature of cooling water according to parameters such as strip temperature and cooling water flow rate. Changes in water flow rate will cause water flow fluctuations and water pressure shocks. However, when the cooling water flow rate changes, water flow fluctuations and water pressure shocks will occur in the system, which will cause instability in water supply in the water pipes. This change will cause water pressure shocks in the water pipes, which will damage the water pipes and the cooling system. Long-term water pressure shocks will not only cause wear and deformation of the water pipes, shorten their service life, but also affect the stability and uniformity of the cooling effect, thereby affecting the quality and performance of the steel strip.

[0004] In view of this, this application is hereby filed. Utility Model Content

[0005] The utility model aims to provide a laminar cooling water volume control device for hot-rolled thin strip steel to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the utility model provides a laminar cooling water control device for hot-rolled thin strip steel, comprising a frame and a conveying assembly arranged thereon for conveying the strip steel, wherein the frame is provided with a cold water tank, the cold water tank is provided with a cooling assembly for laminar cooling the strip steel conveyed on the frame, and the cooling assembly is provided with a slow-flow assembly for slowing down the impact pressure of the water flow;

[0007] The slow flow component comprises a sleeve installed on the inner wall of the cooling component pipeline and an impeller rotatably installed inside the sleeve.

[0008] Furthermore, a bracket is fixedly installed at the port at one end of the sleeve, a hollow shaft is rotatably installed on the bracket, the impeller is fixedly installed on the outer wall of the hollow shaft, and a resistance member is also provided on the hollow shaft;

[0009] The resistance member includes a sliding column slidably installed inside the hollow shaft and a sleeve fixedly installed on the bracket, the head of the sliding column extends to the front end of the impeller and is fixedly connected to a movable plate, the interior of the sleeve is fixedly installed with a friction sleeve, the end of the sliding column is inserted into the interior of the sleeve, and the inner wall of the friction sleeve is fitted with the outer wall of the end of the sliding column, a sliding plate is fixedly installed on the outer wall of the middle part of the sliding column, and a support spring is also sleeved on the sliding column, one end of the support spring is fixedly connected to the sliding plate, and the other end of the support spring is fixedly connected to the inner wall of the hollow shaft.

[0010] Furthermore, a flat key is arranged on the outer wall of the sliding column, and a key slot matching the flat key is arranged at the port at the front end of the hollow rotating shaft.

[0011] Furthermore, the cooling component includes a pump body, the water pumping end of the pump body is connected to a liquid suction pipe, a flow control valve is installed on the liquid suction pipe, the end of the liquid suction pipe away from the pump body is connected to the interior of the cold water tank, the discharge end of the pump body is connected to a lower nozzle pipe and an upper nozzle pipe, nozzles are installed on the lower nozzle pipe and the upper nozzle pipe, and the slow flow component is arranged inside the lower nozzle pipe and the upper nozzle pipe.

[0012] Furthermore, the nozzle on the upper nozzle is arranged downward, and the nozzle on the lower nozzle is arranged upward.

[0013] Furthermore, a plurality of cooling components are provided, the plurality of cooling components are arranged at intervals, and two adjacent cooling components are arranged in a staggered manner.

[0014] Furthermore, a water collecting trough is installed on the top of the frame, and the water collecting trough includes a trough body installed on the top of the frame, a filter screen is installed at the notch of the trough body, and a drain pipe connected to the cold water tank is installed at the bottom of the trough body.

[0015] Furthermore, the conveying assembly includes a conveying frame installed on the top of the water collecting tank, a conveying roller is rotatably installed on the conveying frame, and a driving motor for driving the conveying roller to rotate is fixedly installed on the side wall of the conveying frame.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. In the utility model, when the fluid used for cooling enters the lower nozzle and the upper nozzle, the flow of the fluid is used to drive the impeller to rotate, and part of the kinetic energy of the fluid is converted into the kinetic energy of the impeller rotation, thereby reducing the impact of the fluid on the inside of the cooling component, which is beneficial to protecting the cooling component.

[0018] 2. The utility model can improve the friction between the friction sleeve arranged inside the sleeve and the outer wall of the sliding column, thereby increasing the resistance of the impeller rotation, and utilizing the rotation resistance of the impeller to absorb and disperse the impact force of the fluid, effectively reducing the impact of the water flow on the inside of the cooling component, reducing energy loss and erosion corrosion,

[0019] 3. In the utility model, when the water flow pressure increases, the part of the sliding column inserted into the sleeve increases, and the friction force also increases. By adaptively adjusting the rotational resistance of the impeller, energy loss is reduced, and the efficiency of fluid transportation and processing is improved. Under the conditions of fluids with different flow rates and flow rates, the impeller can maintain the best rotation state, thereby realizing maximum energy utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the cooling assembly in the utility model;

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the cooling assembly in the utility model;

[0023] Figure 4 It is a front view structural schematic diagram of the slow flow component in the utility model;

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of the slow flow component in the utility model.

[0025] In the figure: 1. frame; 2. water collecting trough; 3. cold water tank; 4. conveying assembly; 41. conveying frame; 42. conveying roller; 43. driving motor; 5. cooling assembly; 51. pump body; 52. suction pipe; 53. flow control valve; 54. lower nozzle; 55. upper nozzle; 56. nozzle; 6. slow flow assembly; 61. sleeve; 62. bracket; 63. hollow shaft; 64. impeller; 65. resistance member; 651. sliding column; 652. movable plate; 653. sliding plate; 654. supporting spring; 655. plug sleeve; 656. friction sleeve. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-5The utility model provides a technical solution: a laminar cooling water control device for hot-rolled thin strip steel, comprising a frame 1 and a conveying assembly 4 arranged thereon for conveying strip steel, a cold water tank 3 being arranged on the frame 1, a cooling assembly 5 for laminar cooling of the strip steel conveyed on the frame 1 being installed on the cold water tank 3, a slow-flow assembly 6 for slowing down the impact pressure of water flow being arranged in the cooling assembly 5;

[0028] The slow flow assembly 6 comprises a sleeve 61 mounted on the inner wall of the cooling assembly 5 pipeline and an impeller 64 rotatably mounted inside the sleeve 61;

[0029] When the cooling fluid enters the cooling component 5, the flow of the fluid is used to drive the impeller 64 to rotate, converting part of the kinetic energy of the fluid into the kinetic energy of the impeller 64 rotation, reducing the impact of the fluid on the inside of the cooling component 5, which is beneficial to protecting the cooling component 5.

[0030] See also Figure 1 A bracket 62 is fixedly mounted at the port at one end of the sleeve 61, a hollow shaft 63 is rotatably mounted on the bracket 62, an impeller 64 is fixedly mounted on the outer wall of the hollow shaft 63, and a resistance member 65 is also provided on the hollow shaft 63;

[0031] The resistance member 65 includes a sliding column 651 slidably mounted inside the hollow rotating shaft 63 and a plug sleeve 655 fixedly mounted on the bracket 62. The head of the sliding column 651 extends to the front end of the impeller 64 and is fixedly connected with a movable plate 652. A friction sleeve 656 is fixedly mounted inside the plug sleeve 655. The end of the sliding column 651 is inserted into the plug sleeve 655, and the inner wall of the friction sleeve 656 is in contact with the outer wall of the end of the sliding column 651. A sliding plate 653 is fixedly mounted on the outer wall of the middle part of the sliding column 651. A support spring 654 is also sleeved on the sliding column 651. One end of the support spring 654 is fixedly connected to the sliding plate 653, and the other end of the support spring 654 is fixedly connected to the inner wall of the hollow rotating shaft 63.

[0032] The water flow pressure can push the movable plate 652 to drive the sliding column 651 to slide into the inside of the hollow rotating shaft 63. During the sliding process of the sliding column 651, the sliding plate 653 is driven to squeeze the supporting spring 654, and the end of the sliding column 651 is inserted into the socket 655. The friction between the friction sleeve 656 arranged inside the socket 655 and the outer wall of the sliding column 651 is increased, thereby increasing the resistance to the rotation of the impeller 64. The rotation resistance of the impeller 64 is used to absorb and disperse the impact force of the fluid, effectively reducing the impact of the water flow on the inside of the cooling component 5, reducing energy loss and erosion corrosion. When the water flow pressure increases, when the part of the sliding column 651 inserted into the socket 655 increases, the friction force also increases. By adaptively adjusting the rotation resistance of the impeller 64, energy loss is reduced, and the efficiency of fluid transportation and processing is improved. Under the fluid conditions of different flow rates and flow rates, the impeller 64 can maintain the best rotation state, thereby realizing maximum energy utilization.

[0033] See also Figure 5 , a flat key is provided on the outer wall of the sliding column 651, and a key slot matching the flat key is provided at the port at the front end of the hollow rotating shaft 63;

[0034] This is to prevent the sliding column 651 from being displaced when sliding along the inner wall of the hollow rotating shaft 63 .

[0035] See also Figure 3 The cooling assembly 5 includes a pump body 51, a pumping end of the pump body 51 is connected to a liquid extraction pipe 52, a flow control valve 53 is installed on the liquid extraction pipe 52, an end of the liquid extraction pipe 52 away from the pump body 51 is connected to the inside of the cold water tank 3, a lower nozzle 54 and an upper nozzle 55 are connected to the drainage end of the pump body 51, a nozzle 56 is installed on the lower nozzle 54 and the upper nozzle 55, and a slow flow assembly 6 is arranged inside the lower nozzle 54 and the upper nozzle 55;

[0036] The pump body 51 drives the liquid extraction pipe 52 to extract the cold water in the cold water tank 3, and sprays it on the surface of the steel strip through the cooperation of the lower spray pipe 54, the upper spray pipe 55 and the nozzle 56, so as to achieve the effect of laminar cooling of the steel strip.

[0037] It should be noted that: in order to achieve precise control of the water volume, a temperature sensor can also be installed on the roller and a controller can be installed on the cold water tank 3. The temperature sensor is used to detect parameters such as the strip temperature and the cooling water flow rate, and transmit the data to the controller. The flow control valve 53 adjusts the cooling water flow rate according to the instructions issued by the controller. The cold water tank 3 adjusts the cooling water temperature according to the instructions issued by the controller. The controller module receives the temperature sensor data, performs data processing and logical operations, and outputs control signals.

[0038] See also Figure 2 , the nozzle 56 on the upper nozzle 55 is arranged downward, and the nozzle 56 on the lower nozzle 54 is arranged upward;

[0039] When the steel strip is transported between the lower nozzle 54 and the upper nozzle 55, the two sides of the steel strip can be cooled synchronously through the nozzles 56 arranged opposite to each other.

[0040] See also Figure 1 , a plurality of cooling components 5 are provided, the plurality of cooling components 5 are arranged at intervals, and two adjacent cooling components 5 are arranged in a staggered manner;

[0041] The staggered arrangement of the cooling components 5 can achieve a multi-stage cooling effect on the steel strip, thereby improving the cooling efficiency of the steel strip.

[0042] See also Figure 1 A water collecting tank 2 is installed on the top of the frame 1. The water collecting tank 2 includes a tank body installed on the top of the frame 1, a filter screen is installed at the notch of the tank body, and a drain pipe connected to the cold water tank 3 is installed at the bottom of the tank body;

[0043] The cold water sprayed by the cooling assembly 5 will drip into the water collecting tank 2, where impurities will be filtered out by the filter screen arranged thereon, and will flow back to the cold water tank 3 through the drainage pipe arranged on the water collecting tank 2, thus achieving the effect of water circulation and reducing the waste of water resources.

[0044] See also Figure 1 The conveying assembly 4 includes a conveying frame 41 installed on the top of the water collecting tank 2, a conveying roller 42 is rotatably installed on the conveying frame 41, and a driving motor 43 for driving the conveying roller 42 to rotate is fixedly installed on the side wall of the conveying frame 41;

[0045] The conveying roller 42 can be driven to rotate on the conveying frame 41 by the driving motor 43 , and the steel strip can be conveyed by the rotating conveying roller 42 .

[0046] Working principle: The pump body 51 drives the liquid extraction pipe 52 to extract the cold water in the cold water tank 3, and sprays it on the surface of the strip through the lower nozzle 54, the upper nozzle 55 and the nozzle 56, so as to achieve the laminar cooling effect of the strip. When the cooling fluid enters the lower nozzle 54 and the upper nozzle 55, the flow of the fluid is used to drive the impeller 64 to rotate, and part of the kinetic energy of the fluid is converted into the kinetic energy of the impeller 64 rotation, so as to reduce the impact of the fluid on the inside of the cooling component 5, which is beneficial to protect the cooling component 5. The water flow pressure can push the movable plate 652 to drive the sliding column 651 to slide into the inside of the hollow rotating shaft 63. During the sliding process of the sliding column 651, the sliding plate 653 is driven to squeeze the supporting spring 654, and the end of the sliding column 651 is The end is inserted in the socket 655, and the friction between the friction sleeve 656 arranged inside the socket 655 and the outer wall of the sliding column 651 is increased, thereby increasing the resistance to the rotation of the impeller 64. The rotation resistance of the impeller 64 is used to absorb and disperse the impact force of the fluid, effectively reducing the impact of the water flow on the inside of the cooling component 5, reducing energy loss and erosion corrosion. When the water flow pressure increases, when the part of the sliding column 651 inserted into the socket 655 increases, the friction force also increases. By adaptively adjusting the rotation resistance of the impeller 64, energy loss is reduced, and the efficiency of fluid transportation and processing is improved. Under the conditions of fluids with different flow rates and flow rates, the impeller 64 can maintain the best rotation state, thereby realizing maximum energy utilization.

Claims

1. A laminar cooling water flow control device for hot-rolled thin steel strip, comprising a frame (1) and a conveying assembly (4) arranged thereon for conveying the steel strip, characterized in that: The frame (1) is provided with a cold water tank (3), the cold water tank (3) being provided with a cooling assembly (5) for laminar cooling of the steel strip conveyed on the frame (1), the cooling assembly (5) being provided with a slow flow assembly (6) for slowing down the impact pressure of the water flow; The slow flow component (6) comprises a sleeve (61) mounted on the inner wall of the pipeline of the cooling component (5) and an impeller (64) rotatably mounted inside the sleeve (61).

2. The hot rolled thin strip laminar cooling water control device according to claim 1, characterized in that: A bracket (62) is fixedly mounted at a port at one end of the sleeve (61); a hollow rotating shaft (63) is rotatably mounted on the bracket (62); the impeller (64) is fixedly mounted on the outer wall of the hollow rotating shaft (63); and a resistance member (65) is also provided on the hollow rotating shaft (63); The resistance member (65) comprises a sliding column (651) slidably mounted inside the hollow rotating shaft (63) and a plug sleeve (655) fixedly mounted on the bracket (62); the head of the sliding column (651) extends to the front end of the impeller (64) and is fixedly connected to a movable plate (652); a friction sleeve (656) is fixedly mounted inside the plug sleeve (655); the end of the sliding column (651) is inserted into the inside of the plug sleeve (655), and the inner wall of the friction sleeve (656) is in contact with the outer wall of the end of the sliding column (651); a sliding plate (653) is fixedly mounted on the outer wall of the middle part of the sliding column (651); a support spring (654) is also sleeved on the sliding column (651); one end of the support spring (654) is fixedly connected to the sliding plate (653), and the other end of the support spring (654) is fixedly connected to the inner wall of the hollow rotating shaft (63).

3. The hot rolled thin strip laminar cooling water control device according to claim 2, characterized in that: A flat key is provided on the outer wall of the sliding column (651), and a key slot matching the flat key is provided at the port at the front end of the hollow rotating shaft (63).

4. The hot rolled thin strip laminar cooling water control device according to claim 1, characterized in that: The cooling assembly (5) comprises a pump body (51), a water pumping end of the pump body (51) is connected to a liquid pumping pipe (52), a flow control valve (53) is installed on the liquid pumping pipe (52), an end of the liquid pumping pipe (52) away from the pump body (51) is connected to the interior of the cold water tank (3), a drainage end of the pump body (51) is connected to a lower spray pipe (54) and an upper spray pipe (55), a nozzle (56) is installed on each of the lower spray pipe (54) and the upper spray pipe (55), and the slow flow assembly (6) is arranged inside the lower spray pipe (54) and the upper spray pipe (55).

5. The hot rolled thin strip laminar cooling water control device according to claim 4, characterized in that: The nozzle (56) on the upper nozzle pipe (55) is arranged downward, and the nozzle (56) on the lower nozzle pipe (54) is arranged upward.

6. The hot rolled thin strip laminar cooling water control device according to claim 4, characterized in that: A plurality of cooling assemblies (5) are provided, and the plurality of cooling assemblies (5) are arranged at intervals, and two adjacent cooling assemblies (5) are arranged in a staggered manner.

7. The hot rolled thin strip laminar cooling water control device according to claim 1, characterized in that: A water collecting trough (2) is installed on the top of the frame (1), and the water collecting trough (2) comprises a trough body installed on the top of the frame (1), a filter screen is installed at the notch of the trough body, and a drainage pipe connected to the cold water tank (3) is installed at the bottom of the trough body.

8. The hot rolled thin strip laminar cooling water control device according to claim 7, characterized in that: The conveying assembly (4) comprises a conveying frame (41) mounted on the top of the water collecting tank (2), a conveying roller (42) being rotatably mounted on the conveying frame (41), and a driving motor (43) for driving the conveying roller (42) to rotate is fixedly mounted on the side wall of the conveying frame (41).

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