Pass-type square rectangular tube quenching cooling device and cooling method

Abstract

The invention discloses a through-type square rectangular tube quenching cooling device and cooling method.The cooling system comprises a cold supplementing device annularly arranged around a tube, the cold supplementing device comprises a water supply pipe, the water supply pipe is provided with a plurality of sets of nozzles, and the nozzles symmetrically face the end face and the corners of the tube; the cooling method comprises the following steps: setting quenching cooling operation parameters of each group of cold supplementing devices, and continuously quenching and cooling conveyed pipes; and detecting a quenching cooling effect change value of the pipe during operation of the cold supplementing device, judging a quenching cooling effect difference value, and adjusting quenching cooling operation parameters. High-pressure spray or water flow is sprayed through the water supply pipe and the spray head to wash the surface of the square rectangular pipe, the cooling time is effectively shortened, and the production efficiency is improved; the multiple sets of annularly-arranged cold supplementing devices can independently adjust the water supply pressure and flow, the cooling strength of each area can be accurately controlled while the cooling effect is enhanced, the cooling uniformity after pipe quenching is ensured, and the problems of deformation and bending are effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of metal processing equipment, in particular to a through-type square and rectangular tube quenching cooling device and a cooling method. Background Art

[0002] Square rectangular tube is a kind of tube with square or rectangular cross-section, usually made of steel strip or steel plate through curling, welding and other processes. It has high structural strength and can withstand greater pressure and weight. It is widely used in building structure, machinery manufacturing and other fields. Common ones are carbon steel, stainless steel, aluminum alloy, etc., to meet different environments and usage requirements, the appropriate size and wall thickness can be selected according to specific engineering needs.

[0003] During the production process, rectangular tubes usually need to be quenched using quenching equipment to improve their mechanical properties. In the prior art, if the rectangular tubes are placed in the cooling tank inappropriately, such as tilted or not fully immersed, and the water flow is unevenly distributed in the tank, local cooling differences will be caused; in areas with faster cooling speeds, the material shrinks more, while in areas with slower cooling speeds, the material shrinks relatively less. This difference in shrinkage will cause uneven internal stress inside the rectangular tube. When this internal stress exceeds the yield strength of the rectangular tube's own material, deformation will occur. In severe cases, it may even cause the rectangular tube to bend, thereby affecting the dimensional accuracy and performance of the rectangular tube and reducing the quality of the product. Summary of the invention

[0004] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a through-type square and rectangular tube quenching cooling device and cooling method.

[0006] In order to achieve the above-mentioned object, in a first aspect, the present invention provides a through-type square and rectangular tube quenching cooling device, comprising: a plurality of groups of supplementary cooling devices arranged around the tube, the supplementary cooling devices comprising a water supply pipe, the water supply pipe being used to contain cooling water;

[0007] The water supply pipe is provided with a plurality of groups of nozzles, the nozzles are symmetrically oriented toward the end surface and the corner of the pipe, and the nozzles are used to spray cooling water.

[0008] In some of the embodiments, multiple groups of water supply pipes of the cooling supplement device are connected through connectors to form a multi-return heat exchange cooling circuit.

[0009] In some of these embodiments, mounting plates are symmetrically arranged at both ends of the water supply pipe, connectors are arranged at both ends of the water supply pipe, and the water supply pipe is detachably connected to the mounting plates through the connectors.

[0010] In some of these embodiments, mounting holes are formed in the mounting plates. The mounting holes include a first clamping hole and a second clamping hole. The water supply pipe is detachably installed between adjacent mounting plates through the first clamping hole, and a support plate is detachably installed between adjacent mounting plates through the second clamping hole.

[0011] In some of these embodiments, multiple groups of nozzles are arranged in parallel. The nozzles include a first spray head and multiple groups of second spray heads. The first spray head is equidistantly and obliquely oriented towards the end face of the outer contour of the pipe, and the second nozzles are symmetrically oriented towards the corners of the pipe contour.

[0012] In some of these embodiments, the inclination angle of the first spray head is 45 - 60°, and the inclination angle of the second spray head is 30 - 60°.

[0013] In a second aspect, the present invention also provides a quenching and cooling method for a through-type square and rectangular pipe, which is executed via the through-type square and rectangular pipe quenching and cooling device as described in the first aspect. The steps of the cooling method include:

[0014] S100, set the quenching and cooling operation parameters of each group of supplementary cooling devices, and continuously perform quenching and cooling on the conveyed pipes;

[0015] S200, detect the change value of the quenching and cooling effect of the pipe during the operation of the supplementary cooling device, judge the difference value of the quenching and cooling effect, and adjust the quenching and cooling operation parameters.

[0016] In some of these embodiments, S100 includes:

[0017] S110, set the water supply flow rate and injection pressure corresponding to each group of water supply pipes and spray heads;

[0018] S120, adjust the injection angle corresponding to each group of water supply pipes and spray heads.

[0019] In some of these embodiments, S100 further includes:

[0020] S130, connect the ring-shaped and / or spaced multiple groups of supplementary cooling devices to form a multi-pass heat exchange and cooling circuit.

[0021] In some of these embodiments, S200 includes:

[0022] S210, detect the temperature difference value and change value of the pipe end face and corners, and judge the difference in quenching and cooling effect;

[0023] S220. Adjust the water supply flow rate and injection pressure corresponding to each group of water supply pipes and nozzles;

[0024] S230. Repeat S210 and S220.

[0025] The present invention has the following beneficial effects:

[0026] 1. In the present invention, the surface of the rectangular pipe is washed by spraying high-pressure spray or water flow through the water supply pipe and the nozzle. The convective heat effect during the solid-liquid contact can quickly remove the heat on the surface of the pipe material, effectively shortening the cooling time and improving the production efficiency;

[0027] 2. The multiple groups of supplementary cooling devices arranged in a ring can adjust the water supply pressure and flow rate separately. While enhancing the cooling effect, it can precisely control the cooling intensity of each area, ensure the cooling uniformity of the pipe material after quenching, effectively solve the problems of deformation and bending, and can meet diverse processing requirements. Description of the Drawings

[0028] Figure 1 It is the front view of the through-type rectangular pipe quenching and cooling device proposed by the present invention;

[0029] Figure 2 It is the side view of the through-type rectangular pipe quenching and cooling device proposed by the present invention;

[0030] Figure 3 It is the process Figure 1 ;

[0031] Figure 4 It is the process Figure 2 ;

[0032] Figure 5 It is the process Figure 3 .

[0033] Legend Explanation:

[0034] 1. Pipe material; 2. Supplementary cooling device; 21. Water supply pipe; 22. Nozzle; 221. First nozzle; 222. Second nozzle; 23. Connector; 3. Installation plate; 31. First clamping hole; 32. Second clamping hole; 4. Support plate. Detailed Embodiment

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The embodiment of the present application provides a through-type square and rectangular tube quenching cooling device and cooling method, which solves the problem of deformation and bending caused by uneven cooling of the tube in the prior art. The present application uses a water supply pipe and a nozzle to spray high-pressure spray or water flow to flush the surface of the square rectangular tube, and uses the convection heat effect during solid-liquid contact to quickly take away the heat on the surface of the tube, effectively shortening the cooling time and improving production efficiency; multiple groups of ring-mounted supplementary cooling devices can individually adjust the water supply pressure and flow rate, while enhancing the cooling effect, the cooling intensity of each area can be accurately controlled to ensure the cooling uniformity of the tube after quenching, effectively solve the problem of deformation and bending, and can meet diverse processing needs.

[0037] Please refer to the following examples for details:

[0038] Reference Figure 1 - Figure 2 The present invention provides an embodiment of a through-type square and rectangular tube quenching cooling device, the specific structure of which includes: a plurality of groups of cooling devices 2 arranged around the tube 1.

[0039] Among them, the cooling device 2 includes a water supply pipe 21 and a nozzle 22. The water supply pipe 21 is used to contain cooling water. Correspondingly, multiple groups of nozzles 22 are symmetrically arranged on the water supply pipe 21, and the nozzles 22 face the end face and corners of the pipe 1 to spray cooling water.

[0040] It can be understood that the water supply pressure and flow rate of each group of supplementary cooling devices 2 can be set separately, or the water supply pipes 21 of multiple groups of supplementary cooling devices 2 can be connected through the connector 23 to form a multi-return heat exchange cooling circuit, and the end face and corners of the entire pipe 1 can be quenched and cooled in a side-by-side ring manner.

[0041] Exemplarily, the supplementary cooling device 2 includes four groups, upper, lower, left and right. Each group of supplementary cooling devices 2 can individually set the corresponding water supply pressure and flow rate to adjust the cooling intensity of each group of supplementary cooling devices 2: by precisely adjusting the water pressure and flow rate of the four parts, the square rectangular tube can be evenly cooled during the quenching process, thereby effectively avoiding the risk of deformation and bending caused by thermal stress concentration.

[0042] It can be understood that when high-pressure spray or water flow is sprayed on the surface of the rectangular pipe through the water supply pipe 21 and the nozzle, the convective heat effect during solid-liquid contact can be utilized to quickly remove the heat from the surface of the pipe 1, thereby effectively shortening the cooling time and improving the production efficiency. The corresponding additional nozzles can provide additional cooling to the corner parts of the rectangular pipe during cooling, compensating for the loss of cooling intensity caused by the corner positions, ensuring uniform overall cooling effect. At the same time, combined with the independent adjustment of the four sets of supplementary cooling devices 2 in the up, down, left, and right directions, the cooling uniformity of the pipe 1 after quenching is ensured, effectively solving the problems of deformation and bending, and thus meeting diverse processing requirements.

[0043] Please continue to refer to Figure 1 - Figure 2 In this embodiment, mounting plates 3 are symmetrically arranged at both ends of the water supply pipe 21, which can provide stable support for the water supply pipe 21 and facilitate the installation and fixation of the entire cooling device. Correspondingly, connection heads 23 are arranged at both ends of the water supply pipe 21, enabling the water supply pipe 21 to be detachably connected to the mounting plate 3 through the connection heads 23, facilitating the installation, maintenance, and replacement of the entire supplementary cooling device 2, and improving the practicality and maintainability of the entire device.

[0044] Furthermore, mounting holes are formed on the mounting plate 3, and the mounting holes include a first clamping hole 31 and a second clamping hole 32. Specifically, the water supply pipe 21 is detachably installed between adjacent mounting plates 3 through the first clamping hole 31. This installation method can ensure the stable connection of the water supply pipe 21 on the mounting plate 3 and is also convenient for disassembly and replacement when needed. Correspondingly, the support plate 4 is detachably installed between adjacent mounting plates 3 through the second clamping hole 32, which can effectively enhance the structural stability of the entire cooling device and ensure its reliability during operation.

[0045] It should be noted in detail that multiple groups of nozzles 22 are arranged in parallel to ensure that the cooling water can be evenly sprayed on the surface of the pipe 1. Among them, the nozzle 22 includes a first spray head 221 and multiple groups of second spray heads 222: The first spray head 221 is equally spaced and inclined towards the end face of the outer contour of the pipe 1, which can make the cooling water sprayed on the end face more evenly distributed, thereby improving the cooling effect. Correspondingly, the second nozzles 22 are symmetrically oriented towards the corners of the contour of the pipe 1 and are specially designed for the heat dissipation requirements of the corners of the pipe 1. Specifically, the inclination angle of the first spray head 221 is 45 - 60°, and the inclination angle of the second spray head 222 is 30 - 60°.

[0046] It can be understood that when the high-temperature square rectangular pipe comes into contact with the cooling water sprayed by the nozzle 22, heat is conducted to the cooling water through heat conduction, causing the water temperature to rise and become hot, forming a local temperature difference (this step is the starting point of heat transfer and provides a driving force for the subsequent convection process); at the same time, due to the existence of the temperature difference, hot water rises and cold water sinks, and then a circulating flow can be formed (convection effect). This circulating flow promotes the rapid conduction and removal of heat, thereby quickly removing the heat from the surface of the pipe 1, effectively shortening the cooling time, and improving the production efficiency.

[0047] Furthermore, by increasing the water pressure of the nozzle 22, the flow rate of the coolant can be increased, thereby enhancing the cooling effect. The adjustment of the water pressure at different positions can cope with the uneven force of the square rectangular pipe during the heating process, making the cooling more comprehensive and uniform; by adjusting the water flow rate, the cooling intensity of each area can be precisely controlled. For example, increasing the flow rate in the high-temperature section to achieve a higher cooling speed. This can not only improve the cooling efficiency but also precisely control the cooling intensity of each area while enhancing the cooling effect, ensuring the cooling uniformity of the pipe 1 after quenching, effectively solving the problems of deformation and bending, and thus meeting diverse processing requirements.

[0048] It should be elaborated in detail that the supplementary cooling device 2 is configured with a corresponding control module (such as a PLC control module, etc., which is not shown in Figure 1 and Figure 2 ), which can monitor the flow rate and pressure of the cooling water of each group of supplementary cooling devices 2 in real time, and can adjust the quenching and cooling operation parameters of each group of supplementary cooling devices 2 through a touch module (such as a touch display screen, etc., which is not shown in Figure 1 and Figure 2 ) electrically connected to the control module to achieve precise control of the cooling process.

[0049] Referring to Figure 3 - Figure 5 , the present invention also provides an embodiment of a through-type square rectangular pipe quenching and cooling method, which is executed by the through-type square rectangular pipe quenching and cooling device in the above-mentioned embodiment. The steps of the cooling method include:

[0050] S100, setting the quenching and cooling operation parameters of each group of supplementary cooling devices 2, and continuously quenching and cooling the conveyed pipe 1;

[0051] S200, detecting the change value of the quenching and cooling effect of the pipe 1 during the operation of the supplementary cooling device 2, judging the difference value of the quenching and cooling effect, and adjusting the quenching and cooling operation parameters.

[0052] Please continue to refer to Figure 4 , in this embodiment, S100 includes:

[0053] S110, setting the water supply flow rate and spraying pressure corresponding to each group of water supply pipes 21 and nozzles;

[0054] S120 adjusts the spraying angles corresponding to each group of water supply pipes 21 and the nozzles.

[0055] It can be understood that during the actual production process, an initial water supply flow rate value needs to be set for each group of water supply pipes 21 according to the material, specifications of the pipe 1 and the expected quenching and cooling effect: for pipes 1 with larger specifications, due to their larger surface area, a larger water supply flow rate is required to ensure that heat can be dissipated in a timely manner; for some special material pipes 1 that are more sensitive to the cooling rate, the appropriate initial water supply flow rate needs to be accurately calculated and set according to their heat conduction characteristics and quenching requirements to avoid quality problems such as deformation and cracks in the pipe 1 caused by over-fast or over-slow cooling; after setting the water supply flow rate, the spraying pressure corresponding to each group of nozzles is adjusted according to the specific situation and cooling requirements of the pipe 1: a higher spraying pressure can make the cooling water contact the surface of the pipe 1 more deeply, enhancing the convective heat transfer effect and thus improving the cooling efficiency; for pipes 1 with higher hardness, the spraying pressure can be appropriately increased to enhance the cooling effect.

[0056] At the same time, before adjusting the spraying angle, it is necessary to conduct a detailed analysis of the surface heat distribution characteristics of the pipe 1 during the quenching and cooling process: since there may be differences in the heat distribution of different parts of the surface of the pipe 1 during the heating and conveying process, for example, the heat accumulation conditions of the end face and corners of the pipe 1 are different due to different heat dissipation conditions, it is necessary to obtain the surface heat distribution image of the pipe 1 through detection equipment such as a thermal imager and analyze the temperature differences and heat accumulation conditions of different parts.

[0057] For the first nozzle 221, it is necessary to determine its inclination angle by combining the principles of fluid mechanics and convective heat transfer characteristics: the inclination angle of the first nozzle 221 is set at 45 - 60°, which can ensure that the cooling water effectively covers the end face of the pipe 1 while enabling the cooling water to form a reasonable water flow trajectory after contacting the surface of the pipe 1, promoting the rapid conduction and removal of heat. The specific angle selection also needs to consider factors such as the diameter, length, and conveying speed of the pipe 1; for pipes 1 with a larger diameter, the inclination angle of the first nozzle 221 can be appropriately increased to ensure that the cooling water can fully contact the edge part of the end face of the pipe 1; for pipes 1 with a faster conveying speed, the inclination angle can be slightly reduced to increase the contact time between the cooling water and the surface of the pipe 1 and improve the cooling effect.

[0058] For the second nozzle 222, based on the heat distribution characteristics on the surface of the pipe 1 and the principle of convective heat transfer, its tilt angle is determined as follows: the tilt angle of the second nozzle 222 is set at 30 - 60°, which can better cool the corners of the pipe 1 and make up for the loss of cooling intensity caused by the corner positions. During actual adjustment, according to the specific shape, size of the corners of the pipe 1 and the flow conditions of the surrounding fluid, the tilt angle of the second nozzle 222 needs to be fine-tuned to ensure that the cooling water can be accurately sprayed onto the corner area and form an effective cooling effect. When the fillet at the corner of the pipe 1 is small, the tilt angle of the second nozzle 222 can be appropriately increased so that the cooling water can penetrate deeper into the corner area. For a larger fillet at the corner, the tilt angle can be appropriately reduced according to the actual situation to avoid excessive accumulation of cooling water at the corner.

[0059] Furthermore, S100 further includes:

[0060] S130, connecting the ring-shaped and / or spaced multiple groups of supplementary cooling devices 2 to form a multi-pass heat exchange cooling circuit.

[0061] It can be understood that during actual production, the water supply pipes 21 of the ring-shaped and / or spaced multiple groups of supplementary cooling devices 2 can be selectively connected through connectors 23 according to production needs to form a multi-pass heat exchange cooling circuit. During the connection process, it is necessary to ensure good sealing of the connection part to prevent leakage of cooling water. Exemplarily, the connector 23 can be sealed by using a sealing gasket, threaded connection, etc., and a pressure test should be carried out after the connection is completed to check for leakage points. If leakage is found, it should be repaired and adjusted in time to ensure the sealing and stability of the multi-pass heat exchange cooling circuit.

[0062] Please continue to refer to Figure 5 , in this embodiment, S200 includes:

[0063] S210, detecting the temperature difference value and change value between the end face and corners of the pipe 1, and judging the difference in quenching and cooling effects;

[0064] S220, adjusting the water supply flow rate and spraying pressure corresponding to each water supply pipe 21 and nozzle;

[0065] S230, repeating S210 and S220.

[0066] It can be understood that during actual production, high-precision temperature detection sensors can be arranged at the end face and corner positions of the pipe 1 or analyzed through devices such as an infrared temperature detector (as prior art, Figure 1 and Figure 2(not shown in the figure), and then accurately obtain the temperature data on the surface of the pipe 1 in real time. The arrangement of the sensors should follow the principles of uniform distribution and key focus to ensure that the temperature changes at the end face and corners of the pipe 1 can be comprehensively reflected; during the operation of the supplementary cooling device 2, the temperature data at the end face and corners of the pipe 1 are collected in real time and transmitted to the control system; then, the collected data are processed and analyzed in real time through the control module to calculate the temperature difference value and change value at different positions: the temperature difference value refers to the temperature difference between the end face and corners of the pipe 1 at the same moment. By comparing the temperature differences between the end face and corners, it can be preliminarily judged whether the cooling effect is uneven; the temperature change value refers to the change range of the temperature at the end face and corners of the pipe 1 within a certain time interval. By analyzing the temperature change value, the dynamic characteristics of the cooling process can be understood, and the difference in the quenching and cooling effect can be further judged.

[0067] Subsequently, based on the collected temperature difference value and change value, combined with the preset threshold range, it is judged whether there is a difference in the quenching and cooling effect of the pipe 1: when the temperature of the end face of the pipe 1 is significantly lower than that of the corners, it indicates that the cooling effect of the corners is insufficient, the cooling intensity of the supplementary cooling device 2 for the corners is insufficient or the spraying angle of the cooling water needs to be adjusted; when it is judged that there is a difference in the quenching and cooling effect, the water supply flow rate corresponding to each group of water supply pipes 21 and nozzles is adjusted specifically through the control module: when the cooling effect in a certain area is insufficient, the water supply flow rate of the water supply pipe 21 in that area can be appropriately increased to increase the supply of cooling water and enhance the cooling effect; conversely, when the cooling effect in a certain area is too strong, resulting in too low a surface temperature of the pipe 1 or overcooling, the water supply flow rate of the water supply pipe 21 in that area can be appropriately reduced; in addition to adjusting the water supply flow rate, the spraying pressure corresponding to each group of water supply pipes 21 and nozzles also needs to be adjusted: when the impact force of the cooling water on the surface of the pipe 1 is insufficient or the coverage is uneven, the spraying pressure can be appropriately increased so that the cooling water can more effectively contact the surface of the pipe 1 and improve the convective heat transfer effect; when the impact force of the cooling water on the surface of the pipe 1 is too large, the spraying pressure needs to be appropriately reduced.

[0068] By continuously detecting the temperature difference value and change value at the end face and corners of the pipe 1, it is judged whether there is a difference in the quenching and cooling effect, and the water supply flow rate and spraying pressure are adjusted in a timely manner according to the judgment result, so that the quenching and cooling process always remains in the best state; during the repeated process, the temperature data and operating parameters before and after each adjustment need to be recorded to evaluate and analyze the adjustment effect and further optimize the adjustment strategy; after multiple repeated adjustments, when the temperature difference value and change value at the end face and corners of the pipe 1 are stable within the preset threshold range and the quenching and cooling effect remains stable, it indicates that the cooling system has reached the best operating state. At this time, the current operating parameters such as the water supply flow rate and spraying pressure can be continued until the quenching and cooling process of the pipe 1 ends.

[0069] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A through-type square and rectangular pipe quenching and cooling device, characterized in that, Including: Multiple groups of cold supplement devices arranged around the pipe. The cold supplement device includes a water supply pipe for accommodating cooling water. Multiple groups of nozzles are arranged on the water supply pipe. The nozzles symmetrically face the end faces and corners of the pipe, and the nozzles are used for spraying cooling water.

2. The through-type square and rectangular pipe quenching and cooling device according to claim 1, wherein The water supply pipes of multiple groups of the cold supplement devices are connected through connectors to form a multi-pass heat exchange cooling circuit.

3. The through-type square and rectangular pipe quenching and cooling device according to claim 1, characterized in that Mounting plates are symmetrically arranged at both ends of the water supply pipe. Connectors are arranged at both ends of the water supply pipe, and the water supply pipe is detachably connected to the mounting plate through the connectors.

4. The through-type square and rectangular pipe quenching and cooling device according to claim 3, characterized in that, Mounting holes are formed in the mounting plate. The mounting holes include a first clamping hole and a second clamping hole. The water supply pipe is detachably installed between adjacent mounting plates through the first clamping hole, and a support plate is detachably installed between adjacent mounting plates through the second clamping hole.

5. The through-type square and rectangular pipe quenching and cooling device according to claim 1, characterized in that Multiple groups of the nozzles are arranged in parallel. The nozzle includes a first nozzle head and multiple groups of second nozzle heads. The first nozzle head is inclined equidistantly towards the end face of the outer contour of the pipe, and the second nozzles symmetrically face the corners of the pipe contour.

6. The through-type square and rectangular pipe quenching and cooling device according to claim 5, characterized in that, The inclination angle of the first nozzle head is 45 - 60°, and the inclination angle of the second nozzle head is 30 - 60°.

7. A quenching and cooling method for a passing square and rectangular pipe, characterized in that, The cooling method is performed via the through-type square and rectangular pipe quenching and cooling device according to any one of claims 1 to 6. The steps of the cooling method include: S100, setting the quenching and cooling operation parameters of each group of cold supplement devices, and continuously performing quenching and cooling on the conveyed pipe. S200, detecting the change value of the quenching and cooling effect of the pipe during the operation of the cold supplement device, judging the difference value of the quenching and cooling effect, and adjusting the quenching and cooling operation parameters.

8. The through-type square and rectangular pipe quenching and cooling method according to claim 7, characterized in that, The S100 includes: S110, setting the water supply flow rate and spraying pressure corresponding to each group of water supply pipes and nozzles. S120, adjusting the spraying angle corresponding to each group of water supply pipes and nozzles.

9. The through-type square and rectangular pipe quenching and cooling method according to claim 7, characterized in that, The S100 further includes: S130, connecting the multiple groups of cold supplement devices arranged in a ring and / or at intervals to form a multi-pass heat exchange cooling circuit.

10. The through-type square and rectangular pipe quenching and cooling method according to claim 7, characterized in that, The S200 includes: S210, detecting the temperature difference value and change value of the end face and corners of the pipe, and judging the difference in the quenching and cooling effect. S220, adjusting the water supply flow rate and spraying pressure corresponding to each group of water supply pipes and nozzles. S230, repeating S210 and S220.

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