Annealing pinch roller combination for on-line pipe fitting weld joint

Abstract

The utility model provides an annealing pinch roller combination for on-line pipe fitting weld joints, which comprises a pinch roller and a pinch roller cooling component, a cooling cavity is arranged in the pinch roller, and the cooling cavity is communicated with an external refrigerant source and a hot water collector through the pinch roller cooling component; the pressing wheel cooling assembly comprises a water passing piece, a water inlet pipeline and a water outlet pipeline are arranged in the water passing piece, and a water outlet of the water inlet pipeline and a water inlet of the water outlet pipeline are both communicated with the cooling cavity; a water inlet of the water inlet pipeline is communicated with an external refrigerant source, and a water outlet of the water outlet pipeline is communicated with the hot water collector. According to the annealing pinch roller combination, the temperature of the pinch roller is reduced by cooling the pinch roller through water cooling circulation, so that the annealing stability and the surface quality of a pipe fitting are prevented from being influenced by heating deformation and unsmooth surface of the pinch roller in the annealing process and unsmooth rotation of a bearing at high temperature, and meanwhile, the service life of the pinch roller combination is greatly prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of welded pipes, and in particular relates to an annealing pressing wheel assembly for an online pipe fitting weld. Background Art

[0002] In-line weld annealing equipment utilizes an induction heater as a key component of a continuous pipe welding unit. It heats the weld seam of a newly welded steel pipe to above the critical temperature for quenching and annealing, minimizing weld stress and potential cracking. The resulting fine-grained structure ensures a strong and tough pipe that meets all standard specifications. Rapid, localized heating of the weld minimizes oxidation and deformation. Precise and consistent heat penetration also results in a fine-grained structure throughout the weld, consistent with that of the parent material. The annealing furnace incorporates an annealing roller assembly. Existing roller assemblies lack cooling, resulting in roller heat during the annealing process, reducing roller life and causing surface roughness that impacts the weld quality of the pipe. Utility Model Content

[0003] In view of the above problems, the utility model provides an annealing press wheel assembly for an online pipe fitting weld.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] An annealing roller assembly for an online pipe fitting weld comprises a roller and a roller cooling assembly. A cooling cavity is provided inside the roller, and the cooling cavity is connected to an external refrigerant source and a hot water collector through the roller cooling assembly.

[0006] Furthermore, the pressure wheel cooling assembly includes a water passage, inside which a water inlet pipe and a water outlet pipe are provided, the water outlet of the water inlet pipe and the water inlet of the water outlet pipe are both connected to the cooling chamber; the water inlet of the water inlet pipe is connected to an external refrigerant source, and the water outlet of the water outlet pipe is connected to a hot water collector.

[0007] Furthermore, the water-passing part is a water-passing shaft, which is coaxially arranged through the pressure wheel and is fixedly connected to the pressure wheel; the water outlet of the water inlet pipe and the water inlet of the water outlet pipe are both located on the circumferential side wall of the water-passing shaft, and the water outlet of the water inlet pipe and the water inlet of the water outlet pipe are both located in the cooling chamber.

[0008] Furthermore, the water inlet of the water inlet pipe and the water outlet of the water outlet pipe are respectively located on the end faces of both ends of the water-passing shaft.

[0009] Furthermore, the annealing roller assembly also includes two water-passing universal joints, which are respectively connected to the two ends of the water-passing shaft and are respectively connected to the water inlet pipe and the water outlet pipe. The ends of the two water-passing universal joints away from the water-passing shaft are respectively connected to the external refrigerant source and the hot water collector.

[0010] Furthermore, a buffer cavity is coaxially provided inside the water-passing universal joint, and a water inlet channel and a water outlet channel are symmetrically provided on both sides of the buffer cavity. The water inlet end of the water-passing shaft extends into the water outlet channel of one water-passing universal joint, and the water outlet end of the water-passing shaft extends into the water inlet channel of the other water-passing universal joint.

[0011] Furthermore, the water inlet pipe includes a first water inlet section, a second water inlet section and a third water inlet section arranged in sequence along the direction of water flow therein, the first water inlet section and the second water inlet section are coaxially arranged with the water flow axis, the third water inlet section is perpendicular to the second water inlet section, and the diameter of the first water inlet section is smaller than the diameter of the water outlet channel in the water flow universal joint, and larger than the diameter of the second water inlet end.

[0012] Furthermore, the length of the first water inlet section is shorter than the length of the second water inlet section.

[0013] Furthermore, the water outlet pipeline and the water inlet pipeline are arranged in a mirror-symmetrical manner.

[0014] Furthermore, the pressure wheel is fixedly connected to the water-through shaft by welding; and the water-through universal joint is fixedly connected to the water-through shaft by welding.

[0015] The annealing roller assembly of the utility model reduces the temperature of the roller by circulating water cooling through the roller, thereby avoiding the influence of heating and deformation of the roller, rough surface and unsmooth rotation of the bearing after high temperature on the annealing process, which affects the annealing stability and surface quality of the pipe fitting, and greatly prolongs the service life of the roller assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of the annealing pressure wheel assembly for online pipe fitting welds according to the present invention.

[0017] Figure 2 This is a schematic structural diagram of the pressure wheel described in the present utility model.

[0018] Figure 3 This is a structural schematic diagram of the water-through shaft described in the utility model.

[0019] Figure 4 This is a structural schematic diagram of the water-through universal joint described in the utility model.

[0020] Among them, 1-pressure wheel, 2-water shaft, 3-water universal joint, 11-cooling chamber, 21-water inlet pipe, 22-water outlet pipe, 31-buffer chamber, 32-water inlet channel, 33-water outlet channel, 211-first water inlet section, 212-second water inlet section, 213-third water inlet section, 221-first water outlet section, 222-second water outlet section, 223-third water outlet section. DETAILED DESCRIPTION

[0021] 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 embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figures 1-4 As shown, an annealing roller assembly for online pipe welds includes a roller 1 and a roller cooling assembly. A cooling chamber 11 is provided inside the roller 1, and the cooling chamber 11 is connected to an external refrigerant source and a hot water collector through the roller cooling assembly.

[0023] It can be understood that by opening a cooling chamber 11 inside the pressing wheel 1, and passing the refrigerant into the cooling chamber 11 through the pressing wheel 1 cooling assembly and guiding the refrigerant after heat exchange out of the cooling chamber 11, the pressing wheel 1 is cooled, thereby ensuring the annealing stability of the pipe fittings and the surface quality of the pipe fittings, and greatly extending the combined life of the pressing wheel 1.

[0024] Furthermore, the pressure wheel cooling assembly includes a water passage, inside which a water inlet pipe 21 and a water outlet pipe 22 are provided, and the water outlet of the water inlet pipe 21 and the water inlet of the water outlet pipe 22 are both connected to the cooling chamber 11; the water inlet of the water inlet pipe 21 is connected to an external refrigerant source, and the water outlet of the water outlet pipe 22 is connected to a hot water collector.

[0025] It is understandable that the use of a water passage for both the introduction of refrigerant and the discharge of refrigerant after heat exchange simplifies the structure of the pressure roller cooling assembly and is more suitable for the use environment of the pipe welding production line.

[0026] Specifically, in some embodiments, the water-passing part is a water-passing shaft 2, the water-passing shaft 2 is coaxially passed through the pressure wheel 1, and the water-passing shaft 2 is fixedly connected to the pressure wheel 1; the water outlet of the water inlet pipe 21 and the water inlet of the water outlet pipe 22 are both located on the circumferential side wall of the water-passing shaft 2, and the water outlet of the water inlet pipe 21 and the water inlet of the water outlet pipe 22 are both located in the cooling chamber 11; the water inlet of the water inlet pipe 21 and the water outlet of the water outlet pipe 22 are respectively located on the end faces of both ends of the water-passing shaft 2.

[0027] It can be understood that the water-passing part is set as a water-passing shaft 2 that passes through the pressure wheel 1. The water-passing shaft 2 is rotatably connected to the water-passing shaft 2 through a bearing. The water-passing shaft 2 not only serves as a water-passing pipe, but also serves as the rotating shaft of the pressure wheel 1. While cooling the pressure wheel 1, the temperature rise of the water-passing shaft 2 caused by the heat transferred by the pressure wheel 1 can also be suppressed.

[0028] Furthermore, the annealing roller 1 combination also includes two water-passing universal joints 3, which are respectively connected to the two ends of the water-passing shaft 2 and are respectively connected to the water inlet pipe 21 and the water outlet pipe 22, and the ends of the two water-passing universal joints 3 away from the water-passing shaft 2 are respectively connected to the external refrigerant source and the hot water collector.

[0029] It can be understood that the provision of water-through outward adapters at both ends of the water-through shaft 2 facilitates connection with different external refrigerant sources and hot water collectors.

[0030] Furthermore, a buffer chamber 31 is coaxially provided inside the water-passing universal joint 3, and a water inlet channel 32 and a water outlet channel 33 are symmetrically provided on both sides of the buffer chamber 31. The water inlet end of the water-passing shaft 2 extends into the water outlet channel 33 of one water-passing universal joint 3, and the water outlet end of the water-passing shaft 2 extends into the water inlet channel 32 of the other water-passing universal joint 3.

[0031] It is understandable that the provision of the buffer chamber 31 can effectively reduce the flow rate of the refrigerant entering the water inlet pipe 21, thereby increasing the retention time of the refrigerant in the cooling chamber 11 and improving the heat exchange efficiency.

[0032] Furthermore, the water inlet pipe 21 includes a first water inlet section 211, a second water inlet section 212, and a third water inlet section 213, which are arranged in sequence along the direction of water flow therein. The first water inlet section 211 and the second water inlet section 212 are arranged coaxially with the water flow axis 2, and the third water inlet section 213 is perpendicular to the second water inlet section 212. The diameter of the first water inlet section 211 is smaller than the diameter of the water outlet channel 33 in the water flow universal joint 3, and larger than the diameter of the second water inlet end. The length of the first water inlet section 211 is shorter than the length of the second water inlet section 212. The water outlet pipe 22 is arranged in a mirror-symmetrical manner with the water inlet pipe 21.

[0033] It is understood that the provision of the larger diameter first water inlet section 211 further reduces the flow rate of the refrigerant entering the water inlet pipe 21, increases the retention time of the refrigerant in the cooling chamber 11, and improves the heat exchange efficiency. The larger diameter water outlet section of the water outlet pipe 22 located at the end of the water-passing shaft 2 can reduce the flow rate of the refrigerant flowing out after heat exchange.

[0034] Furthermore, the pressure wheel 1 is fixedly connected to the water-passing shaft 2 by welding; and the water-passing universal joint 3 is fixedly connected to the water-passing shaft 2 by welding.

[0035] Those skilled in the art should understand that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An annealing roller assembly for online pipe welds, characterized in that: It includes a pressing wheel and a pressing wheel cooling assembly. A cooling cavity is provided inside the pressing wheel. The cooling cavity is connected to an external refrigerant source and a hot water collector through the pressing wheel cooling assembly.

2. The annealing roller assembly for online pipe welds according to claim 1, characterized in that: The pressure wheel cooling assembly includes a water flow part, inside which a water inlet pipe and a water outlet pipe are provided, the water outlet of the water inlet pipe and the water inlet of the water outlet pipe are both connected to the cooling chamber; the water inlet of the water inlet pipe is connected to an external refrigerant source, and the water outlet of the water outlet pipe is connected to a hot water collector.

3. The annealing roller assembly according to claim 2, characterized in that: The water-passing part is a water-passing shaft, which is coaxially passed through the pressure wheel and is fixedly connected to the pressure wheel; the water outlet of the water inlet pipe and the water inlet of the water outlet pipe are both located on the circumferential side wall of the water-passing shaft, and the water outlet of the water inlet pipe and the water inlet of the water outlet pipe are both located in the cooling chamber.

4. The annealing roller assembly according to claim 3, characterized in that: The water inlet of the water inlet pipe and the water outlet of the water outlet pipe are respectively located on the end surfaces of both ends of the water-passing shaft.

5. The annealing roller assembly according to claim 4, characterized in that: The annealing roller assembly also includes two water-passing universal joints, which are respectively connected to the two ends of the water-passing shaft and are respectively connected to the water inlet pipe and the water outlet pipe. The ends of the two water-passing universal joints away from the water-passing shaft are respectively connected to the external refrigerant source and the hot water collector.

6. The annealing roller assembly according to claim 5, characterized in that: A buffer cavity is coaxially provided inside the water-passing universal joint, and a water inlet channel and a water outlet channel are symmetrically provided on both sides of the buffer cavity. The water inlet end of the water-passing shaft extends into the water outlet channel of one water-passing universal joint, and the water outlet end of the water-passing shaft extends into the water inlet channel of the other water-passing universal joint.

7. The annealing roller assembly according to claim 6, characterized in that: The water inlet pipeline includes a first water inlet section, a second water inlet section and a third water inlet section arranged in sequence along the direction of water flow therein. The first water inlet section and the second water inlet section are coaxially arranged with the water flow axis. The third water inlet section is perpendicular to the second water inlet section. The diameter of the first water inlet section is smaller than the diameter of the water outlet channel in the water flow universal joint and larger than the diameter of the second water inlet end.

8. The annealing roller assembly according to claim 7, characterized in that: The length of the first water inlet section is shorter than the length of the second water inlet section.

9. The annealing roller assembly according to claim 8, characterized in that: The water outlet pipeline and the water inlet pipeline are arranged in a mirror-symmetrical manner.

10. The annealing roller assembly according to claim 9, characterized in that: The pressure wheel is fixedly connected to the water-through shaft by welding; and the water-through universal joint is fixedly connected to the water-through shaft by welding.

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