Carbon rod cooling assembly for high frequency welding

Abstract

The utility model provides a carbon rod cooling assembly for high frequency welding, the middle part of carbon rod cooling assembly is double -deck hollow structure, and the inside and outside two layers hollow structure are thorough, the inside layer hollow structure in double -deck hollow structure is water inlet pipeline, the outside layer hollow structure in double -deck hollow structure is water outlet pipeline, one end of the inside layer hollow structure in double -deck hollow structure is connected with water inlet joint, and the other end is connected inside scraper, and the one end of outside layer hollow portion away from water inlet joint is closed end, and the other end is non - closed end. The utility model discloses a carbon rod cooling assembly for high frequency welding, makes carbon rod internal cooling water flow direction change ( the original water flow direction is the welding pipe advancing direction one, and the direction after change is opposite with the advancing direction of welding pipe), avoids the weld of having water and the sundries of cooling water and causes the poor welding of causing quality anomaly.

Description

Technical Field

[0001] This utility model belongs to the field of pipe manufacturing technology, specifically relating to a carbon rod cooling assembly for high-frequency welding. Background Technology

[0002] In high-frequency welding of pipes, the carbon rod needs to be fully cooled. The carbon rod assembly is a key component connecting the water pipe, carbon rod, and inner scraper. During welding, excessive water and impurities in the water must be prevented from entering the weld. Excessive water will cause the molten iron at the weld to cool before complete fusion, altering the weld grain structure and resulting in cold welding, incomplete welding, or false welding, affecting weld quality. Impurities in the water entering the weld can cause pitting or cracking during subsequent pipe expansion. The existing carbon rod assembly, with the water outlet direction aligned with the welded pipe, is prone to excessive water flow at the weld and impurities entering the weld, negatively impacting weld quality. Utility Model Content

[0003] To address the above problems, this utility model provides a carbon rod cooling assembly for high-frequency welding.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A carbon rod cooling assembly for high-frequency welding, wherein the middle part of the carbon rod cooling assembly has a double-layer hollow structure with the inner and outer hollow structures connected to each other. The inner hollow structure of the double-layer hollow structure is a water inlet pipe, and the outer hollow structure of the double-layer hollow structure is a water outlet pipe. One end of the inner hollow structure of the double-layer hollow structure is connected to a water inlet connector, and the other end is connected to an inner scraper. The end of the outer hollow structure away from the water inlet connector is a closed end, and the other end is a non-closed end.

[0005] Furthermore, the double-layer hollow structure includes a hollow carbon rod, a hollow sleeve is fitted on the outside of the hollow carbon rod, multiple water outlet holes are evenly distributed on the side wall of the hollow carbon rod, the inner cavity of the hollow carbon rod is a water inlet pipe, and the space between the hollow carbon rod and the hollow sleeve is a water outlet pipe.

[0006] Furthermore, the water inlet connector is provided with a water inlet channel communicating with the water inlet pipe. Multiple water flow grooves with extending directions parallel to its central axis are evenly distributed on the circumferential direction of the outer wall of the water inlet connector. The water flow grooves are communicating with the outer hollow structure. The outer diameter of the water inlet connector is not less than the outer diameter of the hollow sleeve. The end face of the water inlet connector without water flow grooves is sealed to the end face of the hollow sleeve.

[0007] Furthermore, a plug is fixedly installed on the outer wall of the end of the hollow carbon rod away from the water inlet connector. The outer diameter of the plug is not less than the outer diameter of the hollow sleeve, and the plug is sealed to the end face of the hollow sleeve.

[0008] Furthermore, the outer diameter of the water inlet connector, the outer diameter of the plug, and the outer diameter of the hollow sleeve are the same.

[0009] The carbon rod cooling assembly for high-frequency welding of this utility model changes the direction of the internal cooling water flow of the carbon rod (the original water flow direction is the same as the forward direction of the welding pipe, and the changed direction is opposite to the forward direction of the welding pipe), so as to avoid water and impurities in the cooling water at the weld bead causing poor welding and abnormal quality. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the carbon rod cooling assembly for high-frequency welding described in this utility model.

[0011] Figure 2 This is a schematic diagram of the structure of the carbon rod described in this utility model.

[0012] Figure 3 This is a schematic diagram of the water inlet connector described in this utility model.

[0013] Among them, 1-hollow carbon rod, 2-hollow sleeve, 3-water inlet connector, 4-plug, 11-water outlet, 31-water channel, 32-water inlet channel, 33-small diameter section, 34-large diameter section. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0015] like Figures 1-3 As shown, a carbon rod cooling assembly for high-frequency welding has a double-layer hollow structure in the middle, with the inner and outer hollow layers connected. The inner hollow layer is a water inlet pipe, and the outer hollow layer is a water outlet pipe. One end of the inner hollow layer is connected to a water inlet connector 3, and the other end is connected to an inner scraper. The outer hollow layer has a closed end away from the water inlet connector 3, and the other end is a non-closed end.

[0016] Specifically, the double-layer hollow structure includes a hollow carbon rod 1, a hollow sleeve 2 is sleeved on the outside of the hollow carbon rod 1, a plurality of water outlet holes 11 are evenly distributed on the side wall of the hollow carbon rod 1, the inner cavity of the hollow carbon rod 1 is a water inlet pipe, and the space between the hollow carbon rod 1 and the hollow sleeve 2 is a water outlet pipe.

[0017] The water inlet connector 3 is provided with a water inlet channel 32 that communicates with the water inlet pipe. The water inlet connector 3 is composed of an integrally formed small-diameter section 33 and a large-diameter section 34. The small-diameter section extends into the central sleeve. In order to make the water flow at the outlet end of the water outlet pipe columnar, multiple water flow grooves 31 with extending directions parallel to their central axis are evenly distributed on the circumferential direction of the outer wall of the water inlet connector 3. The water flow grooves 31 are connected to the outer hollow structure. The outer diameter of the water inlet connector 3 is not less than the outer diameter of the hollow sleeve 2. The end face of the water inlet connector 3 without water flow grooves 31 is sealed to the end face of the hollow sleeve 2.

[0018] Furthermore, a plug 4 is fixedly installed on the outer wall of the end of the hollow carbon rod 1 away from the water inlet connector 3. The outer diameter of the plug 4 is not less than the outer diameter of the hollow sleeve 2, and the plug 4 is sealed to the end face of the hollow sleeve 2.

[0019] Furthermore, the outer diameter of the water inlet connector 3 and the outer diameter of the plug 4 are the same as the outer diameter of the hollow sleeve 2.

[0020] Those skilled in the art should understand that the above description is merely a specific embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A carbon rod cooling assembly for high-frequency welding, characterized in that, The carbon rod cooling assembly has a double-layer hollow structure in the middle, with the inner and outer hollow layers connected. The inner hollow layer is the water inlet pipe, and the outer hollow layer is the water outlet pipe. One end of the inner hollow layer is connected to a water inlet connector, and the other end is connected to an inner scraper. The outer hollow layer is closed at one end away from the water inlet connector, and open at the other end.

2. The carbon rod cooling assembly for high-frequency welding according to claim 1, characterized in that, The double-layer hollow structure includes a hollow carbon rod, a hollow sleeve is fitted on the outside of the hollow carbon rod, multiple water outlet holes are evenly distributed on the side wall of the hollow carbon rod, the inner cavity of the hollow carbon rod is a water inlet pipe, and the water outlet pipe is between the hollow carbon rod and the hollow sleeve.

3. The carbon rod cooling assembly for high-frequency welding according to claim 2, characterized in that, The water inlet connector is provided with a water inlet channel that communicates with the water inlet pipe. Multiple water flow grooves with extending directions parallel to their central axis are evenly distributed on the circumferential direction of the outer wall of the water inlet connector. The water flow grooves are communicated with the outer hollow structure. The outer diameter of the water inlet connector is not less than the outer diameter of the hollow sleeve. The end face of the water inlet connector without water flow grooves is sealed to the end face of the hollow sleeve.

4. The carbon rod cooling assembly for high-frequency welding according to claim 3, characterized in that, A plug is fixedly installed on the outer wall of the hollow carbon rod at the end away from the water inlet connector. The outer diameter of the plug is not less than the outer diameter of the hollow sleeve, and the plug is sealed to the end face of the hollow sleeve.

5. The carbon rod cooling assembly for high-frequency welding according to claim 4, characterized in that, The outer diameter of the water inlet connector, the outer diameter of the plug, and the outer diameter of the hollow sleeve are the same.

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