Straightening plate heat removal device for waste heat recovery of steel rolling cooling bed

Abstract

The utility model relates to a straightening plate heat removal device for waste heat recovery of a steel rolling cooling bed, which comprises a straightening plate body, and a heat remover is arranged in an inner cavity of the straightening plate body. The heat collector comprises a horizontal heat collecting pipe, the horizontal heat collecting pipe is close to the upper end face of an inner cavity of the straightening plate body, the horizontal heat collecting pipe is arranged in a U-shaped surrounding mode in the longitudinal direction of the straightening plate body, heat collecting fins are arranged on the periphery of the horizontal heat collecting pipe, and the two ends of the horizontal heat collecting pipe are connected to a pipeline of the heat collecting system respectively. And the horizontal heat removal pipe is filled with a liquid medium which is used for absorbing waste heat of the high-temperature bar on the straightening plate and then conveying the waste heat to a heat collection system. The heat collector is filled with the liquid medium, conduction heat of the liquid medium and the bar on the straightening plate is used for collecting and utilizing waste heat, the straightening plate body, the straightening groove and the original straightening function of a traditional straightening plate are kept unchanged, the waste heat recovery cost is low, and large-scale popularization is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of efficient recovery and reuse of inefficient waste heat and waste energy, and specifically relates to a straightening plate heat extraction device used for recovering waste heat from a steel rolling cooling bed. Background Art

[0002] The traditional bar cooling bed straightening plate is used to cool and straighten the hot and soft bars during the natural cooling process of the rolled wire bars in the high temperature zone of the cooling bed.

[0003] During the natural cooling process of the bar on the cooling bed, the temperature drops and a large amount of heat is released into the working environment, resulting in a huge waste of energy. Therefore, collecting and utilizing the heat released during the cooling process of the bar can not only save energy, but also reduce the temperature to improve the working environment around the cooling bed.

[0004] The traditional way to extract heat from a straightening plate is to process the bottom of the straightening plate into a sealed cavity, fill the sealed cavity with liquid medium, and connect it to the pipeline of the heat collection system, so that the waste heat of the high-temperature rod can be transported to the heat collection system through the liquid medium. However, this straightening plate processing method is difficult and has high processing costs. Utility Model Content

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a straightening plate heat extraction device for recovering waste heat from a steel rolling cooling bed. By adding a heat extractor with a heat absorption function under the traditional straightening plate body, the waste heat of the bar is first conducted to the straightening plate, and then transferred from the straightening plate to the heat extractor, thereby achieving the purpose of waste heat recovery and low waste heat recovery cost.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A straightening plate heat extraction device for recovering waste heat from a steel rolling cooling bed, characterized in that it comprises a straightening plate body, the inner cavity of the straightening plate body is provided with a heat extractor; the heat extractor comprises a horizontal heat extraction pipe, the horizontal heat extraction pipe is close to the upper end surface of the inner cavity of the straightening plate body, the horizontal heat extraction pipe is arranged in a U-shape along the longitudinal direction of the straightening plate body, heat extraction fins are arranged on the outer periphery of the horizontal heat extraction pipe, both ends of the horizontal heat extraction pipe are respectively connected to the pipeline of a heat collection system, the horizontal heat extraction pipe is filled with a liquid medium for absorbing the waste heat of the high-temperature rods on the straightening plate and then transporting it to the heat collection system.

[0008] Furthermore, the heat exchanger also includes a heat plate, the horizontal heat pipe is arranged inside the heat plate, the horizontal heat pipe is U-shaped and surrounds the inside of the heat plate, the heat plate on the periphery of the horizontal heat pipe forms the heat fins, and both ends of the horizontal heat pipe extend out of the heat plate.

[0009] Furthermore, the heat exchanger also includes a pair of vertical heat pipes, the upper ends of the pair of vertical heat pipes are respectively connected to the two ends of the horizontal heat pipe, and the lower ends of the pair of vertical heat pipes are respectively connected to the pipes of the heat collection system.

[0010] Furthermore, the heat extraction fins are arranged opposite to each other on both sides of the radial outer periphery of the horizontal heat extraction pipe, and the heat extraction fins are arranged axially along the vertical section of the horizontal heat extraction pipe and connect the adjacent horizontal heat extraction pipes into one.

[0011] Furthermore, the lower ends of the vertical heat extraction pipes are respectively provided with flexible joints, and the flexible joints are used to connect a pair of the vertical heat extraction pipes to the pipeline.

[0012] (1) The utility model has the following advantages due to the adoption of the above technical solution:

[0013] The utility model provides a straightening plate heat extraction device for recovering waste heat from a steel rolling cooling bed. A heat extractor with a heat absorption function is added below a traditional straightening plate body. The waste heat of the bar is transferred to the heat extractor through the straightening plate body. After the liquid medium in the heat extractor is heated up, the medium is brought into a collection system through a heat exchange pipe and a main pipe to achieve waste heat recovery. The waste heat recovery cost is low and the device is suitable for large-scale promotion and application.

[0014] (2) The utility model provides a straightening plate heat extraction device for recovering waste heat from a steel rolling cooling bed. The waste heat is collected and utilized by heat conduction between the medium in the heat extractor and the rods on the straightening plates. This does not change the straightening function of the existing straightening plates, nor does it affect normal production and the quality of the rods, nor does it hinder the inspection and replacement of the straightening plates. The type of the heat extractor can be designed to match the inner cavity of the cooling bed straightening plates. It is suitable for straightening plates of various forms and specifications, and is more effective for hollow straightening plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0016] Figure 2 for Figure 1 AA schematic diagram.

[0017] Figure 3 It is a schematic diagram of the top view of the heat exchanger of the present invention.

[0018] The reference numerals are as follows: 1-straightening plate body, 2-heat collector, 201-horizontal heat pipe, 202-heat fins, 203-vertical heat pipe, 3-cavity, 4-pipeline. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings to describe the preferred embodiments of the present invention in detail, so as to more clearly understand the purpose, characteristics and advantages of the present invention. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0020] like Figure 1 As shown. The utility model is a straightening plate heat extraction device for recovering waste heat from a steel rolling cooling bed, comprising a straightening plate body 1, the inner cavity of the straightening plate body 1 is provided with a heat extractor 2, the heat extractor 2 comprises a horizontal heat extraction pipe 201, the horizontal heat extraction pipe 201 is close to the upper end surface of the inner cavity of the straightening plate body 1, the horizontal heat extraction pipe 201 is arranged in a U-shaped surround along the longitudinal direction of the straightening plate body 1, and the outer periphery of the horizontal heat extraction pipe 201 is arranged with heat extraction fins 202, the two ends of the horizontal heat extraction pipe 201 are respectively connected to the pipeline 4 of the heat collection system, and the horizontal heat extraction pipe 201 is filled with a liquid medium for absorbing the waste heat of the high-temperature rod placed on the straightening plate body 1 and then transporting it to the heat collection system. The heat of the liquid medium is extracted by the heat collection system and then utilized.

[0021] Specifically, the straightening plate body 1 has a straightening groove above, a cavity structure below, and an opening at the bottom of the cavity structure. High-temperature rods are placed in the straightening groove. The heat collector 2 is placed along the longitudinal direction of the cavity and is located at one side of the lower plate surface of the upper end of the straightening plate body 1 to absorb the residual heat of the high-temperature rods.

[0022] In the present invention, the horizontal heat pipe 201 of the heat exchanger 2 is arranged in a U-shaped reciprocating manner, the water inlet at one end of the horizontal heat pipe 201 is located on one longitudinal side of the cavity, and the water outlet at the other end of the horizontal heat pipe 201 is located on the other longitudinal side of the cavity.

[0023] The horizontal heat pipe 201 is U-shaped along the longitudinal interior of the cavity, enters from one edge of the cavity, is U-shaped wound at the other edge, and then turns back to the cavity entry end, is U-shaped wound again from the entry end and then turns back to the other end of the cavity, is wound in sequence, and finally extends from the other edge of the other end of the cavity.

[0024] Of course, as a preference, both ends of the horizontal heat extraction pipe 201 may extend from the same end of the cavity.

[0025] The pipeline 4 of the heat collection system includes an inlet pipe and a return pipe. The inlet pipe is connected to one end of the water inlet of the horizontal heat pipe 201, and the return pipe is connected to one end of the water outlet of the horizontal heat pipe 201. The liquid medium enters the horizontal heat pipe 201 through the water inlet from the inlet pipe, surrounds it in sequence, and then flows into the return pipe from the side of the water outlet to carry the heat to the heat collection system for utilization.

[0026] Furthermore, the heat exchanger 2 further includes a pair of vertical heat pipes 203 , the upper ends of which are respectively connected to the two ends of the horizontal heat pipe 201 , and the lower ends of which are respectively connected to the heat pipe 4 .

[0027] The vertical heat pipe 203 extends the two ends of the horizontal heat pipe 201 downwards to facilitate docking with the heat collection system. Since the upper end of the inner cavity of the straightening plate body 1 is closed and the lower end of the inner cavity is suspended, there is no way to set water inlet and outlet channels around the upper end. Therefore, the water inlet and outlet channels of the horizontal heat pipe 201 are led to the lower end of the inner cavity through the vertical heat pipe 203. A pair of vertical heat pipes 203 are connected to the two ends of the horizontal heat pipe 201 to lead out the water inlet and outlet for easy docking with the heat collection system. At the same time, the vertical heat pipe 203 can be supported by the pipe 4 of the heat collection system, so that the horizontal heat pipe 201 can be located in the inner cavity of the straightening plate body 1 without the help of other supporting devices.

[0028] Furthermore, heat fins 202 are arranged on both sides of the radial outer periphery of the horizontal heat pipe 201. The heat fins 202 are rectangular sheet structures. The heat fins 202 are axially arranged along the vertical section of the horizontal heat pipe 201 and connect the adjacent horizontal heat pipes 201 as a whole, so that the entire horizontal heat pipe 201 and the heat fins 202 form a plate structure. The heat fins 202 can effectively increase the heat collection area of ​​the horizontal heat pipe 201 and accelerate the absorption of waste heat from the high-temperature rod.

[0029] As a preferred embodiment, the heat exchanger 2 can also be a plate-shaped structural plate. The heat exchanger 2 includes a heat exchanger plate, a horizontal heat exchanger pipe 201, and a vertical heat exchanger pipe 203. The horizontal heat exchanger pipe 201 is arranged inside the heat exchanger plate. The horizontal heat exchanger pipe 201 is U-shaped along the longitudinal inner part of the heat exchanger plate, enters from the edge of one end of the heat exchanger plate, and is U-shaped wound at the edge of the other end and then turns back to the entry end, and then is U-shaped wound from the entry end and turns back to the other end, winding in sequence, and finally extending from the other edge of the other end. At this time, the heat exchanger plate portion on the periphery of the horizontal heat exchanger pipe 201 can form a heat exchanger fin 202.

[0030] Of course, both ends of the horizontal heat extraction pipe (201) can extend from the same end of the heat extraction plate, or extend from both ends of the heat extraction plate. Both ends of the extended horizontal heat extraction pipe 201 are connected to the vertical heat extraction pipe 203 respectively.

[0031] Furthermore, the lower ends of the vertical heat extraction pipes 203 are respectively provided with flexible joints, which are used to connect a pair of vertical heat extraction pipes 203 to the pipe 4 of the heat collection system. The flexible joints are respectively threadedly connected to the pipe 4 and the vertical heat extraction pipes 203 for easy disassembly and installation.

[0032] Furthermore, since the utility model arranges a radiator in the lower end cavity of the straightening plate body 1, the heat extraction effect for the hollow straightening plate is better. The hollow straightening plate can better release the residual heat into the lower end cavity of the straightening plate body 1, and can better transfer the heat to the heat collector 2.

[0033] The utility model provides a straightening plate heat extraction device for recovering waste heat from a steel rolling cooling bed, wherein a heat extractor 2 with a heat absorption function is added below a traditional straightening plate body 1. The waste heat of the high-temperature bar is firstly conducted to the straightening plate body 1, and then transferred from the straightening plate body 1 to the heat extractor 2, and the heat extractor 2 increases the temperature of the liquid medium, thereby achieving the purpose of recovering waste heat from the steel rolling cooling bed. At the same time, the heat extractor 2 in each straightening plate body 1 can be connected in parallel with the inlet and outlet pipes of the heat collection system.

Claims

1. A straightening plate heat extraction device for recovering waste heat from a steel rolling cooling bed, characterized in that: The invention comprises a straightening plate body (1), wherein the inner cavity of the straightening plate body (1) is provided with a heat collector (2); the heat collector (2) comprises a horizontal heat pipe (201), wherein the horizontal heat pipe (201) is close to the upper end surface of the inner cavity of the straightening plate body (1), and the horizontal heat pipe (201) is arranged in a U-shape along the inner cavity of the straightening plate body (1); heat collecting fins (202) are arranged on the outer periphery of the horizontal heat pipe (201); the two ends of the horizontal heat pipe (201) are respectively connected to the pipeline (4) of the heat collection system; the horizontal heat pipe (201) is filled with a liquid medium for absorbing the waste heat of the high-temperature rod on the straightening plate body (1) and then transporting it to the heat collection system.

2. The straightening plate heat extraction device for recovering waste heat from a steel rolling cooling bed according to claim 1 is characterized in that: The heat extractor (2) further comprises a heat extracting plate, the horizontal heat extracting pipe (201) being arranged inside the heat extracting plate, the horizontal heat extracting pipe (201) being arranged in a U-shape along the inside of the heat extracting plate, the heat extracting plate on the periphery of the horizontal heat extracting pipe (201) forming the heat extracting fins (202), and both ends of the horizontal heat extracting pipe (201) extending out of the heat extracting plate.

3. A straightening plate heat extraction device for recovering waste heat from a steel rolling cooling bed according to claim 1 or 2, characterized in that: The heat extractor (2) further comprises a pair of vertical heat extracting pipes (203), the upper ends of the pair of vertical heat extracting pipes (203) being respectively connected to the two ends of the horizontal heat extracting pipe (201), and the lower ends of the pair of vertical heat extracting pipes (203) being respectively connected to the pipes (4) of the heat collection system.

4. The straightening plate heat extraction device for recovering waste heat from a steel rolling cooling bed according to claim 3 is characterized in that: The heat extraction fins (202) are arranged opposite to each other on both sides of the radial outer periphery of the horizontal heat extraction pipe (201); the heat extraction fins (202) are arranged axially along the vertical section of the horizontal heat extraction pipe (201) and connect adjacent horizontal heat extraction pipes (201) into one.

5. The straightening plate heat extraction device for recovering waste heat from a steel rolling cooling bed according to claim 4 is characterized in that: The lower ends of the vertical heat extraction pipes (203) are respectively provided with flexible joints, and the flexible joints are used to connect a pair of the vertical heat extraction pipes (203) to the pipeline (4).

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