High-speed wire radiant heat recovery device

Abstract

The invention discloses a high-temperature radiation heat recovery device and relates to the technical field of high-temperature production. The problems that an existing radiation heat recovery device cannot better recycle radiation heat energy of a high-speed wire production line while steel wires are produced, so that the comprehensive utilization rate of energy is low, and energy is wasted are solved. When the high-speed wire production line works, the overturning steel frame is slowly put down along with rotation of the winch and covers the high-speed wire production line, heat exchange media start to enter the input ports of the heat exchange tube bundles on the two inclined sections of the overturning steel frame to absorb radiation heat, and the overturning steel frame is connected with the heat exchange tube bundles on the bottom face of the horizontal section of the overturning steel frame in series through hoses. And the heat exchange medium enters the heat exchange tube bundle on the bottom surface of the horizontal section of the turnover steel frame to continuously absorb radiation heat, then flows out through the heat exchange tube bundle output port on the bottom surface of the horizontal section of the turnover steel frame, and enters an energy recovery device, namely a plate heat exchanger for heat recovery. The invention is suitable for the technical field of high heat recycling of the steel production line.

Description

Technical Field

[0001] The invention relates to the technical field of high-temperature production, and in particular to a high-temperature line radiation heat recovery device. Background Art

[0002] At present, domestic steel enterprises that produce wire rods cool the wire rods and rollers by installing blowers at the bottom of the wire rod conveyor rollers in the air cooling process after the wire rods are spun. Such cooling sections are usually 60 to 80 meters long, and the upper part of the cold front section is mostly open. In this way, the hot air that cools the wire rods directly releases heat in the production workshop, resulting in a very high ambient temperature in the production workshop during the air cooling process. This not only causes a huge waste of energy, but also creates a poor production environment for workshop workers. During the high-wire production process of the steel plant, the initial temperature of the wire rod spit out by the wire laying machine is as high as 800℃ to 900℃. The wire rod has a large heat storage capacity and a high surface temperature, and has a high waste heat recovery value. Steel enterprises have not been able to achieve good recovery and utilization of the waste heat of the wire rods in the air cooling process of the high-wire production line.

[0003] In summary, the existing radiant heat recovery device cannot achieve better recovery and utilization of the radiant heat energy of the high-wire production line while the steel wire is being produced, resulting in a low comprehensive energy utilization rate and further leading to the problem of energy waste. Summary of the invention

[0004] The present invention proposes a high-wire radiation heat recovery device to solve the problem that the existing radiation heat recovery device cannot achieve better recovery and utilization of the radiation heat energy of the high-wire production line while the steel wire is being produced, resulting in a low comprehensive energy utilization rate and further energy waste.

[0005] A high-speed wire radiation heat recovery device of the present invention comprises a fixed steel frame 1, a support 2, a winch 3, a turnover steel frame 4, a lifting lug 5, a U-shaped locking block 6, a crossbeam rotating shaft 7, a fixed support 8, a gas collecting box 9 and a heat exchange tube bundle 10;

[0006] A fixed steel frame 1 is arranged on one side of the steel production line, a support 2 is arranged on the other side of the steel production line, and the support 2 is symmetrically arranged with respect to the axis of the steel production line and the fixed steel frame 1, a winch 3 is arranged on the top of the fixed steel frame 1, a flipping steel frame 4 is arranged on the side of the fixed steel frame 1, and one end of the flipping steel frame 4 is hingedly connected by a crossbeam shaft 7, the cross section of the flipping steel frame 4 is trapezoidal, a lifting lug 5 is arranged on the upper surface of the horizontal section of the flipping steel frame 4, and the cable on the winch 3 is fixedly connected to the lifting lug 5, an air collecting box 9 is respectively arranged on the two long side sides of the horizontal section of the flipping steel frame 4, and each air collecting box 9 is fixedly connected to the flipping steel frame 4 through a fixed support 8, a heat exchange tube bundle 10 is respectively arranged on the lower surface of the two inclined sections and the horizontal section of the flipping steel frame 4, a U-shaped locking block 6 is arranged on the outer surface of the inclined section of the flipping steel frame 4, and the U-shaped locking block 6 is connected to the fixed steel frame 1 through a pin;

[0007] Furthermore, the heat exchange medium inlet / outlet of the heat exchange tube bundle 10 of the two inclined sections of the overturned steel frame 4 is connected in series with the heat exchange tube bundle 10 of the horizontal section of the overturned steel frame 4 through a pipeline;

[0008] Furthermore, the heat exchange medium inlet / outlet of the heat exchange tube bundle 10 of the horizontal section of the flip steel frame 4 is connected in series with the two gas collecting boxes 9 through pipelines;

[0009] Furthermore, the heat exchange tube bundles 10 of the two inclined sections of the flip steel frame 4 are both fixed light tube bundles;

[0010] Furthermore, the heat exchange tube bundle 10 of the horizontal section of the flip steel frame 4 adopts a staggered fin tube bundle;

[0011] Furthermore, the heat exchange tube bundle 10 of the tilted section of the overturned steel frame 4 is composed of a side heat exchange tube group and a top heat exchange tube. The lower surface of the top heat exchange tube is evenly provided with a plurality of side heat exchange tube groups along the length direction, and the distance between each two side heat exchange tube groups is 80 mm.

[0012] Furthermore, the side heat exchange tube group comprises six tube bundles, which are arranged longitudinally in sequence, and the specification of each tube bundle is 26mm×3mm;

[0013] Furthermore, the heat exchange tube bundle 10 of the horizontal section of the overturned steel frame 4 is staggered by two layers of fin tube groups, the spacing of the fin tubes in the same layer is 100 mm, the staggered spacing of the two layers of fin tube groups is 50 mm, a heat exchange shell is provided between the two layers of fin tube groups, the lower layer of fin tube groups is 75 mm away from the inner wall of the heat exchange shell, and the spacing between the two layers of fin tube groups is 80 mm;

[0014] Furthermore, when the high-line production line is in operation, the flip steel frame 4 is slowly lowered as the winch 3 rotates, covering the high-line production line, and the input ports of the heat exchange tube bundles 10 of the two inclined sections of the flip steel frame 4 begin to enter the heat exchange medium to absorb the radiant heat. The heat exchange medium is connected in series with the heat exchange tube bundles 10 on the bottom surface of the horizontal section of the flip steel frame 4 through a hose. The heat exchange medium enters the heat exchange tube bundles 10 on the bottom surface of the horizontal section of the flip steel frame 4 to continue to absorb the radiant heat, and then flows out through the output port of the heat exchange tube bundles 10 on the bottom surface of the horizontal section of the flip steel frame 4, and enters the energy recovery device, namely the plate heat exchanger, for heat recovery. The high-temperature radiant heat of the wire and the high-temperature air after cooling the wire can be used to heat the hot water from 80°C to 120°C, thereby realizing the energy recovery of the waste heat of the wire. At the same time, the plate heat exchanger can be used to heat the return water of the heat network from 50°C to 80°C, thereby realizing energy reuse. When the steel production line needs to be overhauled, the winch 3 can be used to pull the flip steel frame 4 upwards, and a U-shaped locking block 6 is provided on the outer surface of the inclined section of the flip steel frame 4. The U-shaped locking block 6 is connected to the fixed steel frame 1 through a pin, so that the flip steel frame 4 is moved away from the steel production line and fixed to the fixed steel frame 1, thereby facilitating the overhaul of the steel production line. After the overhaul is completed, the flip steel frame 4 is turned back to the original heat exchange state.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention overcomes the shortcomings of the prior art. When the high-line production line is in operation, the flip steel frame is slowly lowered with the rotation of the winch and covers the high-line production line. The input ports of the heat exchange tube bundles of the two inclined sections of the flip steel frame begin to enter the heat exchange medium to absorb the radiant heat. The heat exchange medium is connected in series with the heat exchange tube bundles on the bottom surface of the horizontal section of the flip steel frame through a hose. The heat exchange medium enters the heat exchange tube bundles on the bottom surface of the horizontal section of the flip steel frame to continue to absorb the radiant heat, and then flows out through the output port of the heat exchange tube bundles on the bottom surface of the horizontal section of the flip steel frame, and enters the energy recovery device, namely the plate heat exchanger, for heat recovery. The high-temperature radiant heat of the wire and the high-temperature air after cooling the wire can be used to heat the hot water from 80°C to 120°C, thereby realizing the energy recovery of the waste heat of the wire. At the same time, the plate heat exchanger can be used to heat the return water of the heat network from 50°C to 80°C, thereby realizing the full recovery of the heat energy generated by the steel production line, and then the recovered energy is reasonably utilized, thereby effectively avoiding the waste of energy and improving the comprehensive utilization rate of energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a main cross-sectional view of the distributed movement of a high-line radiation heat recovery device in a working state according to the present invention;

[0018] Figure 2 is a top view of a high-line radiation heat recovery device according to the present invention;

[0019] Figure 3It is a front view of a high-line radiation heat recovery device according to the present invention;

[0020] Figure 4 It is a front view of a heat exchange tube bundle in a high-line radiation heat recovery device according to the present invention;

[0021] Figure 5 It is a schematic diagram of the working principle of a high-line radiation heat recovery device described in the present invention. DETAILED DESCRIPTION

[0022] Specific implementation method 1: Combination Figures 1 to 5 The present embodiment is described. A high-speed wire radiation heat recovery device described in the present embodiment comprises a fixed steel frame 1, a support 2, a winch 3, a flip steel frame 4, a lifting lug 5, a U-shaped locking block 6, a crossbeam shaft 7, a fixed support 8, a gas collecting box 9 and a heat exchange tube bundle 10;

[0023] A fixed steel frame 1 is arranged on one side of the steel production line, a support 2 is arranged on the other side of the steel production line, and the support 2 is symmetrically arranged with respect to the axis of the steel production line and the fixed steel frame 1, a winch 3 is arranged on the top of the fixed steel frame 1, a flipping steel frame 4 is arranged on the side of the fixed steel frame 1, and one end of the flipping steel frame 4 is hingedly connected by a crossbeam shaft 7, the cross section of the flipping steel frame 4 is trapezoidal, a lifting lug 5 is arranged on the upper surface of the horizontal section of the flipping steel frame 4, and the cable on the winch 3 is fixedly connected to the lifting lug 5, an air collecting box 9 is respectively arranged on the two long side sides of the horizontal section of the flipping steel frame 4, and each air collecting box 9 is fixedly connected to the flipping steel frame 4 through a fixed support 8, a heat exchange tube bundle 10 is respectively arranged on the lower surface of the two inclined sections and the horizontal section of the flipping steel frame 4, a U-shaped locking block 6 is arranged on the outer surface of the inclined section of the flipping steel frame 4, and the U-shaped locking block 6 is connected to the fixed steel frame 1 through a pin;

[0024] In this specific embodiment, when the high-line production line is in operation, the reversing steel frame 4 is slowly lowered as the winch 3 rotates, and covers the high-line production line. The input ports of the heat exchange tube bundles 10 of the two inclined sections of the reversing steel frame 4 begin to enter the heat exchange medium to absorb the radiant heat. The heat exchange medium is connected in series with the heat exchange tube bundles 10 on the bottom surface of the horizontal section of the reversing steel frame 4 through a hose. The heat exchange medium enters the heat exchange tube bundles 10 on the bottom surface of the horizontal section of the reversing steel frame 4 and continues to absorb the radiant heat. Then, it flows out through the output port of the heat exchange tube bundles 10 on the bottom surface of the horizontal section of the reversing steel frame 4 and enters the energy recovery device, i.e., the plate heat exchanger, for heat recovery. The high-temperature radiant heat of the wire and the high-temperature air after cooling the wire can be used to heat the hot water from 80°C to 120°C, thereby realizing the energy recovery of the waste heat of the wire. At the same time, the plate heat exchanger can be used to heat the return water of the heat network from 50°C to 80°C, thereby realizing energy reuse. When the steel production line needs to be overhauled, the winch 3 can be used to pull the flip steel frame 4 upwards, and a U-shaped locking block 6 is provided on the outer surface of the inclined section of the flip steel frame 4. The U-shaped locking block 6 is connected to the fixed steel frame 1 through a pin, so that the flip steel frame 4 is moved away from the steel production line and fixed to the fixed steel frame 1, thereby facilitating the overhaul of the steel production line. After the overhaul is completed, the flip steel frame 4 is turned back to the original heat exchange state.

[0025] Specific implementation method 2: Combination Figures 1 to 5 The present embodiment is described as a further limitation of the recovery device described in the first embodiment. In the present embodiment, a high-line radiation heat recovery device is described, and the heat exchange medium inlet / outlet of the heat exchange tube bundle 10 of the two inclined sections of the flip steel frame 4 is connected in series with the heat exchange tube bundle 10 of the horizontal section of the flip steel frame 4 through a pipeline.

[0026] Specific implementation method three: Combination Figures 1 to 5 This embodiment is described as a further limitation of the recovery device described in the second specific embodiment. In this embodiment, a high-line radiation heat recovery device is described, and the heat exchange medium inlet / outlet of the heat exchange tube bundle 10 of the horizontal section of the flip steel frame 4 is connected in series with the two gas collecting boxes 9 through a pipeline.

[0027] Specific implementation method four: Combination Figures 1 to 5 This embodiment is described as a further limitation of the recovery device described in the first embodiment. In the high-line radiation heat recovery device described in this embodiment, the heat exchange tube bundles 10 of the two inclined sections of the flip steel frame 4 are both fixed light tube bundles.

[0028] Specific implementation method five: Combination Figures 1 to 5 This embodiment is described. This embodiment is a further limitation of the recovery device described in the specific embodiment 1. In the high-line radiation heat recovery device described in this embodiment, the heat exchange tube bundle 10 of the horizontal section of the flip steel frame 4 adopts a staggered fin tube bundle.

[0029] Specific implementation method six: Combination Figures 1 to 5 The present embodiment is described. The present embodiment is a further limitation on the recovery device described in the fourth embodiment. The present embodiment describes a high-line radiation heat recovery device. The heat exchange tube bundle 10 of the inclined section of the flip steel frame 4 is composed of a side heat exchange tube group and a top heat exchange tube. The lower surface of the top heat exchange tube is evenly provided with a plurality of side heat exchange tube groups along the length direction. The spacing between each two side heat exchange tube groups is 80 mm.

[0030] Specific implementation method seven: Combination Figures 1 to 5 This embodiment is described as a further limitation of the recovery device described in the sixth embodiment. This embodiment describes a high-line radiation heat recovery device, wherein the side heat exchange tube group comprises six tube bundles, which are arranged longitudinally in sequence, and the specification of each tube bundle is 26 mm×3 mm.

[0031] Specific implementation method eight: Combination Figures 1 to 5 The present embodiment is described. The present embodiment is a further limitation on the recovery device described in the fifth embodiment. The present embodiment is a high-line radiation heat recovery device. The heat exchange tube bundle 10 of the horizontal section of the flip steel frame 4 is staggered by two layers of fin tube groups. The spacing of the fin tubes on the same layer is 100 mm, and the staggered spacing of the two layers of fin tube groups is 50 mm. A heat exchange shell is provided between the two layers of fin tube groups. The lower layer of fin tube groups is 75 mm away from the inner wall of the heat exchange shell, and the spacing between the two layers of fin tube groups is 80 mm.

[0032] How it works

[0033] When the high-line production line is in operation, the reversing steel frame 4 is slowly lowered with the rotation of the winch 3 and covers the high-line production line. The input ports of the heat exchange tube bundles 10 of the two inclined sections of the reversing steel frame 4 begin to enter the heat exchange medium to absorb the radiant heat. The heat exchange medium is connected in series with the heat exchange tube bundles 10 on the bottom surface of the horizontal section of the reversing steel frame 4 through a hose. The heat exchange medium enters the heat exchange tube bundles 10 on the bottom surface of the horizontal section of the reversing steel frame 4 to continue to absorb the radiant heat, and then flows out through the output port of the heat exchange tube bundles 10 on the bottom surface of the horizontal section of the reversing steel frame 4, and enters the energy recovery device, i.e., the plate heat exchanger, for heat recovery. The high-temperature radiant heat of the wire and the high-temperature air after cooling the wire can be used to heat the hot water from 80°C to 120°C, thereby realizing the energy recovery of the waste heat of the wire. At the same time, the return water of the heat network can be heated from 50°C to 80°C through the plate heat exchanger, thereby realizing energy reuse. When the steel production line needs to be overhauled, the winch 3 can be used to pull the flip steel frame 4 upwards, and a U-shaped locking block 6 is provided on the outer surface of the inclined section of the flip steel frame 4. The U-shaped locking block 6 is connected to the fixed steel frame 1 through a pin, so that the flip steel frame 4 is moved away from the steel production line and fixed to the fixed steel frame 1, thereby facilitating the overhaul of the steel production line. After the overhaul is completed, the flip steel frame 4 is turned back to the original heat exchange state.

Claims

1. A high-speed line radiation heat recovery device, characterized in that: It comprises a fixed steel frame (1), a support (2), a winch (3), a tilting steel frame (4), a lifting lug (5), a U-shaped locking block (6), a crossbeam rotating shaft (7), a fixed support (8), a gas collecting box (9) and a heat exchange tube bundle (10); A fixed steel frame (1) is arranged on one side of a steel production line, a support (2) is arranged on the other side of the steel production line, and the support (2) is arranged symmetrically with the fixed steel frame (1) relative to the axis of the steel production line, a winch (3) is arranged on the top of the fixed steel frame (1), a flip steel frame (4) is arranged on the side of the fixed steel frame (1), and one end of the flip steel frame (4) is hingedly connected through a crossbeam rotating shaft (7), the cross section of the flip steel frame (4) is trapezoidal, a lifting lug (5) is arranged on the upper surface of the horizontal section of the flip steel frame (4), and the winch (3) is arranged on the top of the fixed steel frame (1), and the flip steel frame (4) is hingedly connected to the side ... cross section of the flip steel frame (4) is trapezoidal, and a lifting lug (5) is arranged on the upper surface of the horizontal section of the flip steel frame (4). The cables on (3) are fixedly connected to the lifting ears (5), an air collecting box (9) is respectively provided on the two long side sides of the horizontal section of the tilting steel frame (4), and each air collecting box (9) is fixedly connected to the tilting steel frame (4) through a fixed support (8), a heat exchange tube bundle (10) is respectively provided on the lower surface of the two inclined sections and the horizontal section of the tilting steel frame (4), a U-shaped locking block (6) is provided on the outer surface of the inclined section of the tilting steel frame (4), and the U-shaped locking block (6) is connected to the fixed steel frame (1) through a pin.

2. The high-speed wire radiation heat recovery device according to claim 1, characterized in that: The heat exchange medium inlet / outlet of the heat exchange tube bundle (10) of the two inclined sections of the overturned steel frame (4) is connected in series with the heat exchange tube bundle (10) of the horizontal section of the overturned steel frame (4) through pipelines.

3. The high-speed line radiation heat recovery device according to claim 2, characterized in that: The heat exchange medium inlet / outlet of the heat exchange tube bundle (10) of the horizontal section of the flip steel frame (4) is connected in series with the two gas collecting boxes (9) through pipelines.

4. The high-speed line radiation heat recovery device according to claim 1, characterized in that: The heat exchange tube bundles (10) of the two inclined sections of the tilting steel frame (4) are both fixed light tube bundles.

5. The high-speed wire radiation heat recovery device according to claim 1, characterized in that: The heat exchange tube bundle (10) of the horizontal section of the overturned steel frame (4) adopts a staggered fin tube bundle.

6. The high-speed line radiation heat recovery device according to claim 4, characterized in that: The heat exchange tube bundle (10) of the tilted section of the flip steel frame (4) is composed of a side heat exchange tube group and a top heat exchange tube. The lower surface of the top heat exchange tube is evenly provided with multiple side heat exchange tube groups along the length direction, and the distance between each two side heat exchange tube groups is 80 mm.

7. The high-speed wire radiation heat recovery device according to claim 6, characterized in that: The side heat exchange tube group comprises six tube bundles which are arranged longitudinally in sequence, and the specification of each tube bundle is 26mm×3mm.

8. The high-speed line radiation heat recovery device according to claim 5, characterized in that: The heat exchange tube bundle (10) of the horizontal section of the flip steel frame (4) is staggered by two layers of finned tube groups, the spacing of the finned tubes in the same layer is 100 mm, the staggered spacing of the two layers of finned tube groups is 50 mm, a heat exchange shell is arranged between the two layers of finned tube groups, the lower layer of finned tube groups is 75 mm away from the inner wall of the heat exchange shell, and the spacing between the two layers of finned tube groups is 80 mm.

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