Steel pipe air cooling apparatus and method of use thereof

Abstract

This invention provides a steel pipe air-cooling device and its usage method, relating to the field of heat treatment technology. The device includes: an air inlet mechanism; an air distribution mechanism connected to the air inlet mechanism; and a clamping mechanism including a horizontal bar, vertical bars, and clamping blocks. The horizontal bar is coaxially arranged with the exhaust port, and one end of the horizontal bar is fixed to the air distribution column. Multiple vertical bars are arranged circumferentially along the horizontal bar, with a fixed block in the middle of each vertical bar. Sliding blocks, slidably connected to the vertical bars, are arranged on opposite sides of the fixed block. The sliding blocks are connected to the fixed block via a first spring, which is used to bring the two sliding blocks on opposite sides of the fixed block closer together. The clamping block is fixed to the sliding blocks. This method describes the usage of the aforementioned device. Using self-developed equipment to cool steel pipes via air cooling solves the problems associated with outsourced oil quenching heat treatment methods, such as outsourced processes not adhering to heat treatment procedures and difficulties in coordination.

Description

Technical Field

[0001] This invention relates to the field of heat treatment technology, and in particular to a steel pipe air-cooling device and its usage method. Background Technology

[0002] Previously, the steel pipes we produced mainly used the outsourced oil quenching heat treatment method. This caused problems such as outsourced (cooperative) companies not following the heat treatment process and difficulties in coordination. Therefore, we independently designed a steel pipe air-cooling equipment to cool the workpiece during quenching. Summary of the Invention

[0003] In view of the above situation, the present invention provides a steel pipe air cooling equipment and its usage method. It uses self-developed equipment to cool the steel pipe by air cooling, which solves the problems of outsourced oil quenching heat treatment method, such as outsourcing not following the heat treatment process and difficulty in coordination.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] In a first aspect, the present invention provides a steel pipe air-cooling device, comprising:

[0006] Air intake mechanism;

[0007] An air distribution mechanism connected to the intake mechanism includes an air intake column and an air distribution column;

[0008] The air-gathering column has an air-gathering cavity inside and an air-gathering channel on its side wall for connecting the air-gathering cavity and the air intake mechanism;

[0009] The air distribution column is fixed at the top of the air receiving column; the side wall of the air distribution column has an exhaust port and the inside has an air distribution chamber for connecting the exhaust port and the air receiving chamber;

[0010] The clamping mechanism includes a horizontal bar, a vertical bar, and a clamping block;

[0011] The crossbar is coaxially arranged with the exhaust port, and one end of the crossbar is fixed to the air distribution column;

[0012] Multiple vertical bars are arranged around the circumference of the horizontal bar. A fixed block is located in the middle of the vertical bar. Slider blocks that are slidably connected to the vertical bar are arranged on both sides of the fixed block. The sliders are connected to the fixed block by a first spring. The first spring is used to bring the two sliders located on opposite sides of the fixed block closer to each other.

[0013] The clamping blocks are fixed on the slider, and the two clamping blocks work together to clamp one end of the steel pipe wall.

[0014] In some embodiments of the present invention, the air intake mechanism includes an air guide, the air guide is hollow inside, the air guide has an air inlet and an air outlet that are interconnected, and the air outlet is connected to the air collection channel.

[0015] In some embodiments of the present invention, the top of the air guide is recessed downward to form a groove, and multiple air outlets are circumferentially distributed on the sidewall of the groove; the lower part of the air collecting column is disposed in the groove.

[0016] In some embodiments of the present invention, the clamping mechanism further includes a plurality of top blocks arranged circumferentially along the crossbar, the top blocks being capable of radial extension and retraction along the crossbar and abutting against the middle of the inner wall of the steel pipe.

[0017] In some embodiments of the present invention, the gas distribution mechanism further includes a conical head that is longitudinally movable within the gas collection chamber; the upper inner wall of the gas collection chamber is inclined and adapted to the inclination of the outer wall of the conical head, and an adjustable air guide gap is provided between the outer wall of the conical head and the upper inner wall of the gas collection chamber.

[0018] In some embodiments of the present invention, the gas distribution mechanism further includes a fixed plate and a guide rod. The fixed plate is fixedly disposed in the gas collection cavity, the lower part of the guide rod is longitudinally slidably connected to the fixed plate, and the conical head is located above the fixed plate and connected to the middle part of the guide rod.

[0019] In some embodiments of the present invention, the steel pipe air-cooling device further includes:

[0020] The movable rod is coaxial with the crossbar and can move along the axial direction of the crossbar;

[0021] The first connecting rod has one end hinged to the slider near the crossbar, and the other end hinged to the movable rod after passing through the crossbar.

[0022] The third link is hinged at one end to the upper end of the guide rod and at the other end to the upper part of the movable rod.

[0023] The second spring is used to move the guide rod down to its original position.

[0024] In some embodiments of the present invention, the steel pipe air-cooling device further includes a second connecting rod, one end of which is hinged to the top block and the other end of which is hinged to the movable rod.

[0025] In some embodiments of the present invention, the end of the movable rod away from the guide rod is located outside the crossbar and is fixed with an arc-shaped plate.

[0026] Secondly, the present invention provides a method for using the above-mentioned steel pipe air-cooling equipment, which mainly includes the following steps:

[0027] Step 1: Place the steel pipe on the crossbar and push one end of the steel pipe toward the direction of the gas distribution column. Use the clamping blocks to hold one end of the steel pipe wall.

[0028] Step 2: Heat and insulate the steel pipe;

[0029] Step 3: After passing through the air intake mechanism, air collection channel, air collection chamber and air distribution chamber in sequence, the cold air is blown out from the exhaust port to cool the steel pipe.

[0030] The embodiments of the present invention have at least the following advantages or beneficial effects:

[0031] 1. The steel pipes are cooled by air using self-developed equipment, which solves the problems of outsourced oil quenching heat treatment, such as outsourced contractors not following the heat treatment process and difficulty in coordination.

[0032] 2. Simple structure and low equipment cost.

[0033] 3. The clamping mechanism can securely fix the steel pipe.

[0034] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a structural schematic diagram of a steel pipe air-cooled equipment;

[0037] Figure 2 for Figure 1 A magnified view of a portion of position A in the middle;

[0038] Figure 3 for Figure 1 A magnified view of the area at position B in the middle.

[0039] icon:

[0040] 11-Air guide, 111-Air inlet, 112-Air outlet

[0041] 21-Gas collection column, 211-Gas collection chamber, 212-Gas collection channel, 23-Gas distribution column, 231-Exhaust port, 232-Gas distribution chamber, 24-Conical head, 25-Gas guide gap, 261-Fixed plate, 262-Guide rod, 271-Modible rod, 272-First connecting rod, 273-Second connecting rod, 274-Third connecting rod, 275-Second spring, 28-Arc-shaped plate

[0042] 31-Horizontal bar, 311-Support bar, 32-Vertical bar, 321-Fixing block, 322-Slider, 323-First spring, 33-Clamping block, 34-Top block. Detailed Implementation

[0043] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the embodiments of the invention.

[0044] In the description of the embodiments of the present invention, it should be understood that the terms "middle", "longitudinal", "upper", "lower", "top", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] In the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0047] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0048] Example 1

[0049] Please refer to Figures 1-3 This embodiment provides a steel pipe air-cooling device, which includes an air inlet mechanism, an air distribution mechanism, and a clamping mechanism.

[0050] The air intake mechanism includes an air guide 11, which is hollow inside. The air guide 11 has an air inlet 111 and an air outlet 112 that are interconnected. The top of the air guide 11 is recessed downward to form a groove, and multiple air outlets 112 are circumferentially distributed on the side wall of the groove.

[0051] The gas distribution mechanism includes a gas collection column 21 and a gas distribution column 23.

[0052] The lower part of the gas collecting column 21 is set in the groove. The interior of the gas collecting column 21 has a gas collecting cavity 211, and the side wall has a gas collecting channel 212 for connecting the gas collecting cavity 211 and the air outlet 112.

[0053] The air distribution column 23 is fixed at the top of the air receiving column 21, and the axis of the air distribution column 23 is perpendicular to the axis of the air receiving column 21. Multiple exhaust ports 231 are evenly distributed on the side wall of the air distribution column 23, and the interior has an air distribution chamber 232 for connecting the exhaust ports 231 and the air receiving chamber 211.

[0054] The clamping mechanism includes a horizontal bar 31, a vertical bar 32, and a clamping block 33.

[0055] The crossbar 31 is coaxially arranged with the exhaust port 231, and one end of the crossbar 31 is fixed to the air distribution column 23 by the support rod 311.

[0056] Multiple vertical rods 32 are arranged around the horizontal rod 31. A fixing block 321 is provided in the middle of the vertical rod 32. Slider blocks 322 that are slidably connected to the vertical rod 32 are provided on both sides of the fixing block 321. The sliders 322 are connected to the fixing block 321 by a first spring 323. The first spring 323 is used to bring the two sliders 322 located on opposite sides of the fixing block 321 closer to each other.

[0057] The clamping block 33 is fixed on the slider 322, and the two clamping blocks 33 work together to clamp one end of the steel pipe wall.

[0058] The working principles of the above-mentioned intake mechanism, air distribution mechanism, and clamping mechanism are as follows:

[0059] The steel pipe is fitted onto the crossbar 31, and one end of the steel pipe is pushed between two cooperating sliders 322. The steel pipe is clamped and fixed by the restoring force of the first spring 323. Then, the steel pipe can be heated and kept warm by an external electromagnetic heating device. Then, the air inlet 111 is connected to the air supply device (not shown in the figure). The cold air provided by the air supply device passes through the air inlet 111, the air guide 11, the air outlet 112, the air collection channel 212, the air collection chamber 211 and the air distribution chamber 232 in sequence, and is blown out from each exhaust port 231 to air-cool the steel pipe.

[0060] The clamping mechanism may also include a plurality of top blocks 34 arranged circumferentially along the crossbar 31. The top blocks 34 are capable of radial extension and retraction along the crossbar 31 and can abut against the middle of the inner wall of the steel pipe. The clamping blocks 33 are arranged in pairs to clamp one end of the steel pipe wall, and the plurality of top blocks 34 abut against the middle of the inner wall of the steel pipe, which can better fix the steel pipe.

[0061] Example 2

[0062] This embodiment is a further improvement based on Embodiment 1.

[0063] Please refer to Figures 1-3 In this embodiment, the gas distribution mechanism further includes a conical head 24 longitudinally movably disposed within the gas collection chamber 211; the upper inner wall of the gas collection chamber 211 is inclined and its inclination matches that of the outer wall of the conical head 24, and an adjustable gas guide gap 25 is provided between the outer wall of the conical head 24 and the upper inner wall of the gas collection chamber 211. By adjusting the size of the gas guide gap 25, the gas flow rate within the gas guide gap 25 can be changed (as the gas guide gap 25 decreases, the gas flow rate within the gas guide gap 25 increases, and vice versa), thereby regulating the gas flow rate through the exhaust port 231; as the gas flow rate discharged from the exhaust port 231 changes, the cooling speed of the steel pipe also changes, that is, by adjusting the size of the gas guide gap 25, the cooling speed of the steel pipe can be adjusted.

[0064] Specifically, the conical head 24 is longitudinally movable within the gas distribution cavity 211 in the following manner: The gas distribution mechanism also includes a fixed plate 261 and a guide rod 262. The fixed plate 261 is fixedly disposed within the gas distribution cavity 211, the lower part of the guide rod 262 is longitudinally slidably connected to the fixed plate 261, and the conical head 24 is located above the fixed plate 261 and threadedly connected to the middle part of the guide rod 262.

[0065] Example 3

[0066] This embodiment is a further improvement based on embodiment 2.

[0067] Firstly, please refer to Figures 1-3 In this embodiment, the steel pipe air-cooling device also includes a movable rod 271, a first connecting rod 272, a second connecting rod 273, and a third connecting rod 274.

[0068] The movable rod 271 is coaxial with the crossbar 31 and can move along the axial direction of the crossbar 31;

[0069] One end of the first connecting rod 272 is hinged to the slider 322 near the crossbar 31, and the other end passes through the crossbar 31 and is hinged to the movable rod 271.

[0070] One end of the second connecting rod 273 is hinged to the top block 34, and the other end is hinged to the movable rod 271, so as to realize the radial extension and retraction of the top block 34 along the crossbar 31. In other embodiments, the radial extension and retraction of the top block 34 along the crossbar 31 can also be realized by a spring.

[0071] One end of the third connecting rod 274 is hinged to the upper end of the guide rod 262, and the other end is hinged to the upper part of the movable rod 271; a second spring 275 is connected between the lower end of the guide rod 262 and the fixed plate 261, and the second spring 275 is used to move the guide rod 262 down to reset.

[0072] The working principle of the aforementioned movable rod 271, first connecting rod 272, and second connecting rod 273 is as follows:

[0073] When fixing the steel pipe, the steel pipe is put on the crossbar 31 and one end of the steel pipe is pushed towards the direction of the gas distribution column 23 so that it abuts against the middle of the inner wall of the steel pipe through multiple top blocks 34 and clamps one end of the pipe wall through the clamping blocks 33 used in conjunction.

[0074] The force exerted by the top block 34 on the steel pipe and the force exerted by the clamping block 33 on the steel pipe are provided by the restoring force of the first spring 323; in addition, the downward restoring force of the second spring 275 is transmitted to the movable rod 271 through the third link 274. In this way, under the combined action of the first spring 323 and the second spring 275, the top block 34 and the clamping block 33 can fix the steel pipe more stably.

[0075] During the process of pushing one end of the steel pipe toward the direction of the gas distribution column 23, the steel pipe can also act on the top block 34 and the clamping block 33, so that the movable rod 271 moves along the axis of the guide rod 262. The movable rod 271 drives the guide rod 262 and the conical head 24 to move down through the third connecting rod 274. For steel pipes with different wall thicknesses, the different wall thicknesses of the steel pipes cause the slider 322 and the first clamp to move different distances. This causes the movable rod 271 to drive the guide rod 262 and the conical head 24 to move down different distances through the third connecting rod 274, thereby realizing the adjustment of the size of the gas guide gap 25. That is, the size of the gas guide gap 25 is adjusted according to the difference in the steel pipe wall thickness, thereby adjusting the cooling rate of the steel pipe (the cooling rate is different for different steel pipe wall thicknesses).

[0076] The steel pipe air-cooling equipment also includes an arc plate 28, which is located outside the crossbar 31 and fixed to the end of the movable rod 271 away from the guide rod 262.

[0077] The airflow blown out from the exhaust hole passes over the surface of the steel pipe and acts on one side of the arc plate 28 to push the arc plate 28 away from the guide rod 262. The arc plate 28 causes the movable rod 271 to continue to move away from the guide rod 262. Under the combined action of the first spring 323, the second spring 275 and the arc plate 28, the top block 34 and the clamping block 33 fix the steel pipe more firmly.

[0078] Secondly, please refer to Figures 1-3 This embodiment provides a method for using the above-mentioned steel pipe air-cooled equipment, including the following steps:

[0079] Step 1: Place the steel pipe on the crossbar 31 and push one end of the steel pipe toward the direction of the gas distribution column 23. Multiple top blocks 34 abut against the middle of the inner wall of the steel pipe, and clamp one end of the steel pipe wall with the cooperating clamping blocks 33.

[0080] The force exerted by the clamping block 33 on the steel pipe and the force exerted by the top block 34 on the steel pipe are provided by the restoring force of the first spring 323; in addition, the downward restoring force of the second spring 275 can be transmitted to the movable rod 271 through the third link 274, so that the top block 34 and the clamping block 33 can more firmly fix the steel pipe under the combined action of the first spring 323 and the second spring 275.

[0081] During the process of pushing one end of the steel pipe toward the direction of the gas distribution column 23, the steel pipe can also act on the top block 34 and the clamping block 33, so that the movable rod 271 moves along the axis of the guide rod 262. The movable rod 271 drives the guide rod 262 and the conical head 24 to move downward through the third connecting rod 274. For steel pipes with different wall thicknesses, the sliding block 322 and the first clamp can move different distances during the movement. This makes the movable rod 271 drive the guide rod 262 and the conical head 24 to move downward by different distances through the third connecting rod 274, thereby realizing the adjustment of the size of the gas guide gap 25. That is, the size of the gas guide gap 25 is adjusted according to the difference in steel pipe wall thickness, thereby adjusting the subsequent cooling speed of the steel pipe. The gas guide gap 25 decreases as the steel pipe wall thickness increases, the gas flow rate in the gas guide gap 25 increases, and the gas flow rate blown from the exhaust port 231 to the steel pipe increases, so as to accelerate the subsequent cooling speed of the steel pipe.

[0082] Step 2: Heat and keep the steel pipe warm using an external electromagnetic heating device.

[0083] Step 3: Connect the air inlet 111 to the air supply equipment. The cold air provided by the air supply equipment passes through the air inlet 111, the air guide 11, the air outlet 112, the air collection channel 212, the air collection chamber 211 and the air distribution chamber 232 in sequence, and is then blown out from the exhaust port 231 to air-cool the steel pipe.

[0084] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Without conflict, the embodiments and features described in the embodiments of this application can be arbitrarily combined with each other. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A steel pipe air-cooling device, characterized in that, include: Air intake mechanism; The air distribution mechanism connected to the air intake mechanism includes an air collection column and an air distribution column; The gas collecting column has a gas collecting cavity inside and a gas collecting channel on its side wall for connecting the gas collecting cavity and the air intake mechanism; The gas distribution column is fixed at the top of the gas collection column; the side wall of the gas distribution column has multiple exhaust ports and the interior has a gas distribution chamber for connecting the exhaust ports and the gas collection chamber; The clamping mechanism includes a horizontal bar, a vertical bar, and a clamping block; The crossbar is coaxially arranged with the exhaust port, and one end of the crossbar is fixed to the air distribution column; Multiple vertical bars are arranged circumferentially along the horizontal bar. Each vertical bar has a fixed block in the middle. Slider blocks that are slidably connected to the vertical bar are provided on both sides of the fixed block. The sliders are connected to the fixed block by a first spring, which is used to bring two sliders located on opposite sides of the fixed block closer to each other. The clamping block is fixed on the slider, and the two clamping blocks work together to clamp one end of the steel pipe wall. The gas distribution mechanism also includes a conical head that is longitudinally movable within the gas collection chamber; the upper inner wall of the gas collection chamber is inclined and its inclination matches that of the outer wall of the conical head, and an adjustable gas guide gap is provided between the outer wall of the conical head and the upper inner wall of the gas collection chamber. The gas distribution mechanism also includes a fixed plate and a guide rod. The fixed plate is fixedly disposed in the gas collection chamber. The lower part of the guide rod is longitudinally slidably connected to the fixed plate. The conical head is located above the fixed plate and connected to the middle part of the guide rod. The steel pipe air-cooling equipment also includes: The movable rod is coaxial with the crossbar and can move along the axial direction of the crossbar; The first connecting rod has one end hinged to a slider near the crossbar, and the other end passing through the crossbar and hinged to the movable rod. The third link is hinged at one end to the upper end of the guide rod and at the other end to the upper part of the movable rod. The second spring is used to move the guide rod down to its original position.

2. The steel pipe air-cooled equipment according to claim 1, characterized in that, The air intake mechanism includes an air guide, which is hollow inside and has an air inlet and an air outlet that are connected to each other. The air outlet is connected to the air collection channel.

3. The steel pipe air-cooled equipment according to claim 2, characterized in that, The top of the air guide is recessed downward to form a groove, and multiple air outlets are circumferentially distributed on the sidewall of the groove; the lower part of the air collecting column is disposed in the groove.

4. The steel pipe air-cooled equipment according to any one of claims 1 to 3, characterized in that, The clamping mechanism also includes a plurality of top blocks arranged circumferentially along the crossbar, the top blocks being capable of radial extension and retraction along the crossbar and abutting against the middle of the inner wall of the steel pipe.

5. The steel pipe air-cooled equipment according to claim 4, characterized in that, The steel pipe air-cooling equipment also includes a second connecting rod, one end of which is hinged to the top block and the other end of which is hinged to the movable rod.

6. The steel pipe air-cooled equipment according to claim 5, characterized in that, The end of the movable rod away from the guide rod is located outside the crossbar and is fixed with an arc-shaped plate.

7. A method of using the steel pipe air-cooling equipment as described in any one of claims 1 to 6, characterized in that, Includes the following steps: Step 1: Slide the steel pipe onto the crossbar and push one end of the steel pipe toward the direction of the gas distribution column, and clamp the pipe wall at one end by the clamping block used in conjunction. Step 2: Heat and insulate the steel pipe; Step 3: After passing through the air intake mechanism, the air collection channel, the air collection chamber and the air distribution chamber in sequence, the cold air is blown out from the exhaust port to air-cool the steel pipe.

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