A stretch-flanged end cap plate welded seal

Abstract

This application belongs to the technical field of mechanical seal structure technology and discloses a tensile stamping end cover plate welding sealing structure, including an end cover plate part, an end cover cylinder part fixedly connected to the periphery of one end face of the end cover plate part, and multiple through holes through the inner cavity of the end cover plate part. An inner ring is fixedly sleeved in the middle of the inner wall of the end cover cylinder part, and a mating groove is embedded in the periphery of the end face of the inner ring facing away from the end cover plate part. In this application, through the end cover plate part, the end cover cylinder part and the multiple through holes, a tensile stamping end cover plate for shell and tube heat exchangers can be formed. At the same time, with the inner ring, mating groove, sealing plate, reinforcing arm, welding flange and metal sealing ring, the welding sealing effect of the tensile stamping end cover plate can be guaranteed, while improving its own welding sealing pressure bearing capacity, thereby preventing the leakage of the refrigerant under high pressure environment and preventing the scrapping of the instrument equipment.

Description

Technical Field

[0001] This application relates to the field of mechanical seal structure technology, and more specifically, to a welded sealing structure for a stretched stamped end cover plate. Background Technology

[0002] Shell-and-tube heat exchangers, also known as tubular heat exchangers, are indirect heat exchangers that use the walls of tube bundles enclosed in a shell as the heat transfer surface. These heat exchangers have a simple structure, low cost, wide flow cross-section, and are easy to clean for scale buildup. Stretched and stamped end caps are metal caps manufactured through a stamping and stretching process and are widely used in motor housings, heat exchanger seals, drainage systems, and other fields.

[0003] Currently, when shell-and-tube heat exchangers are used for sealing refrigerant distribution / manifold compartments, they are generally implemented using a flange, bolt, and flange gasket clamping structure. However, this method results in insufficient pressure-bearing capacity of the welded seal, and is prone to refrigerant leakage under high-pressure environments, which can easily lead to the scrapping of instruments and equipment.

[0004] To address the aforementioned issues, this application provides a welded sealing structure for a stretched stamped end cover plate. Utility Model Content

[0005] The technical solution for the welded sealing structure of the stretched stamped end cover plate provided in this application is as follows:

[0006] A welded sealing structure for a stretched stamped end cap includes an end cap portion. An end cap cylinder portion is fixedly connected to the periphery of one end face of the end cap portion. The end cap portion has multiple through holes through its inner cavity. An inner ring is fixedly fitted into the middle of the inner wall of the end cap cylinder portion. A mating groove is embedded in the periphery of the end face of the inner ring facing away from the end cap portion. A sealing sheet is fixedly connected to the inner wall of one side of the mating groove. A reinforcing arm is fixedly connected to the end face of the inner ring facing the end cap portion. The reinforcing arm is located on the end surface of the inner ring facing away from the mating groove. A welding flange is fixedly connected to the periphery of the end face of the end cap cylinder portion facing away from the end cap portion. A metal sealing ring is fixedly fitted into the inner wall of the welding flange, and the inner wall of the metal sealing ring extends to the inner side of the end of the end cap cylinder portion.

[0007] Furthermore, a flange is fixedly fitted onto the outer wall of the end cap cylinder, and the inner cavity at the outer end of the flange is provided with multiple mounting holes that are uniformly spaced and pass through the circumference.

[0008] Furthermore, the multiple through holes are distributed on both sides of the middle part of the end cover plate, and the multiple through holes on each side are evenly distributed in a fan shape on the end cover plate.

[0009] Furthermore, multiple reinforcing arms are provided, and the multiple reinforcing arms are evenly distributed in a circular pattern on one end face of the inner ring. The ends of the multiple reinforcing arms away from the inner ring are all fixedly connected to the inner wall of one side of the end cap cylinder.

[0010] Furthermore, the end cap plate, end cap cylinder, and inner ring are all made of high-strength alloy steel, and the metal sealing ring is made of copper.

[0011] Furthermore, the outer end of the welding flange near the end cap cylinder is flush with the outer end face of the end cap cylinder, and the transverse cross section of the welding flange itself is designed as an isosceles trapezoid.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] In this application, the end cover plate, end cover cylinder, and multiple through holes are designed to form a stretched and stamped end cover plate for a shell-and-tube heat exchanger. Combined with the built-in ring, mating groove, sealing plate, reinforcing arm, welding flange, and metal sealing ring, the stretched and stamped end cover plate's welding sealing performance is ensured while its welding sealing pressure-bearing capacity is improved. This prevents leakage of the refrigerant under high pressure and avoids the scrapping of the equipment. Attached Figure Description

[0014] Figure 1 This is one of the overall structural diagrams of this application;

[0015] Figure 2 This is the second schematic diagram of the overall structure of this application;

[0016] Figure 3 This is an overall internal sectional view of this application;

[0017] Figure 4 For the purposes of this application Figure 3 Enlarged view of point A in the middle.

[0018] Explanation of the labels in the diagram:

[0019] 1. End cover plate; 2. End cover cylinder; 3. Through hole; 4. Internal ring; 5. Butt groove; 6. Sealing plate; 7. Reinforcing arm; 8. Welded flange; 9. Metal sealing ring; 10. Flange; 11. Mounting hole. Detailed Implementation

[0020] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0021] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] Example:

[0024] This application discloses a welded sealing structure for a stretched stamped end cap plate. Please refer to [link / reference]. Figures 1 to 4 The device includes an end cover plate 1, an end cover cylinder 2 fixedly connected to the outer periphery of one end face of the end cover plate 1, and multiple through holes 3 through the inner cavity of the end cover plate 1. An inner ring 4 is fixedly fitted in the middle of the inner wall of the end cover cylinder 2. A mating groove 5 is embedded in the outer periphery of the outer side of the inner face of the inner ring 4 facing away from the end cover plate 1. A sealing sheet 6 is fixedly connected to the inner wall of one side of the mating groove 5. A reinforcing arm 7 is fixedly connected to the outer side of the inner face of the inner ring 4 facing the end cover plate 1. The reinforcing arm 7 is located on the outer surface of the inner ring 4 facing away from the mating groove 5. A welding flange 8 is fixedly connected to the outer periphery of the outer side of the outer face of the end cover plate 1. A metal sealing ring 9 is fixedly fitted in the inner wall of the welding flange 8. The inner wall of the metal sealing ring 9 extends to the inner side of the end of the end cover cylinder 2. A flange 10 is fixedly fitted in the outer wall of the end cover cylinder 2. The inner cavity of the outer end of the flange 10 is uniformly circumferentially circumferentially shaped and has multiple mounting holes 11 through the hole.

[0025] Multiple through holes 3 are distributed on both sides of the middle part of the end cover plate 1, and the multiple through holes 3 on each side are evenly distributed in a fan shape on the end cover plate 1. Multiple reinforcing arms 7 are provided, and the multiple reinforcing arms 7 are evenly distributed in a circle on one end face of the inner ring 4. The ends of the multiple reinforcing arms 7 away from the inner ring 4 are fixedly connected to the inner wall of one side of the end cover cylinder 2. The arrangement and circumferential distribution of the multiple reinforcing arms 7 can effectively improve the connection stability of the inner ring 4 on the inner wall of the end cover plate 1, and further enhance the pressure bearing capacity of the stretch stamped end cover plate itself. The plate part 1, end cap cylinder part 2, and inner ring 4 are all made of high-strength alloy steel. The design of the materials of the end cap plate part 1, end cap cylinder part 2, and inner ring 4 gives them good pressure resistance and corrosion resistance. The metal sealing ring 9 is made of copper. The design of the material of the metal sealing ring 9 gives it good ductility and sealing performance, and can maintain stable sealing performance under high temperature and high pressure. The outer end of the welding flange 8 near the end cap cylinder part 2 is flush with the outer end face of the end cap cylinder part 2, and the transverse cross section of the welding flange 8 itself is designed as an isosceles trapezoid.

[0026] The implementation principle of this embodiment is as follows: During use, the end cover cylinder 2 can be snapped together with the outer shell of the required welded shell-and-tube heat exchanger. At the same time, the mating groove 5 on the outer periphery of one end of the built-in ring 4 is snapped together with the outer shell. At this time, the sealing plate 6 on the inner wall of the mating groove 5 is in close contact with the end face of the outer shell. The metal sealing ring 9 on the inner wall of the welding flange 8 is attached to the outer surface of the outer shell. Then, the welding sealing function of the stretched stamped end cover plate is completed by welding the welding flange 8 to the outer surface of the outer shell. The welding joint between the welding flange 8 and the outer surface of the outer shell adopts a multi-layer welding process, which may include root welding, filling welding and cover welding. The three-layer welding process can effectively improve the welding strength and sealing performance.

[0027] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A welded sealing structure for a stretched stamped end cap, comprising an end cap portion (1), characterized in that: An end cap cylinder (2) is fixedly connected to the outer periphery of one end face of the end cap plate (1), and multiple through holes (3) are provided through the inner cavity of the end cap plate (1). An inner ring (4) is fixedly fitted into the middle of the inner wall of the end cap cylinder (2). A mating groove (5) is embedded in the outer periphery of one end face of the inner ring (4) facing away from the end cap plate (1). A sealing sheet (6) is fixedly connected to the inner wall of one side of the mating groove (5). A reinforcing arm (7) is fixedly connected to one end face of the end cover plate (1). The reinforcing arm (7) is located on the end surface of the inner ring (4) facing away from the mating groove (5). A welding flange (8) is fixedly connected to the outer periphery of one end face of the end cover cylinder (2) facing away from the end cover plate (1). A metal sealing ring (9) is fixedly fitted on the inner wall of the welding flange (8), and the inner wall of the metal sealing ring (9) extends to the inner side of the end of the end cover cylinder (2).

2. The welded sealing structure of a stretched stamped end cover plate according to claim 1, characterized in that: A flange (10) is fixedly fitted onto the outer wall of the end cap cylinder (2). The inner cavity of the outer end of the flange (10) is uniformly circumferentially and has multiple mounting holes (11) that penetrate through it.

3. The welded sealing structure of a stretched stamped end cover plate according to claim 1, characterized in that: Multiple through holes (3) are distributed on both sides of the middle part of the end cover plate (1), and the multiple through holes (3) on each side are evenly distributed in a fan shape on the end cover plate (1).

4. The welded sealing structure of a stretched stamped end cover plate according to claim 1, characterized in that: The reinforcing arms (7) are provided in multiple ways. The multiple reinforcing arms (7) are evenly distributed in a circular pattern on one end face of the inner ring (4), and the ends of the multiple reinforcing arms (7) away from the inner ring (4) are fixedly connected to the inner wall of one side of the end cap cylinder (2).

5. The welded sealing structure of a stretched stamped end cover plate according to claim 1, characterized in that: The end cap plate (1), end cap cylinder (2), and inner ring (4) are all made of high-strength alloy steel, and the metal sealing ring (9) is made of copper.

6. The welded sealing structure of a stretched stamped end cover plate according to claim 1, characterized in that: The outer end of the welding flange (8) near the end cap cylinder (2) is flush with the outer end face of the end cap cylinder (2), and the transverse cross section of the welding flange (8) itself is designed as an isosceles trapezoid.

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