A brazing sealing device for refrigeration heat sink

Abstract

The application relates to a brazing sealing device for refrigeration and heat dissipation parts in the technical field of brazing connection, which comprises a sealing head, the sealing head comprises an inner plug and an outer plug; the inner plug comprises a first plug head and a first plug column section, the first plug column section is sleeved with a first brazing filler ring, the outer diameter of the first brazing filler ring is smaller than the diameter of the first plug head and larger than the diameter of a filling port, a threaded hole is arranged in the center of the outer end surface of the first plug column section, a stud is arranged in the threaded hole in a threaded mode, and a screw head is coaxially fixed to the outer end of the stud; the outer plug comprises a second plug head and a second plug column section, the second plug column section is adapted to be inserted into the filling port, a second brazing filler ring is arranged on the second plug column section between the second plug head and the outer edge surface of the corresponding filling port, a through hole is arranged in the center of the end surface of the outer plug and is adapted to the insertion of the first plug column section, and a spring is arranged on the stud body between the screw head and the first plug head; the brazing sealing device can seal the inner and outer parts to be sealed, and the connection strength and service life are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of brazing connection, in particular to a brazing sealing device for a refrigeration and heat dissipation component. Background Art

[0002] As is well known, brazing is a commonly used metal joining process. It uses a brazing filler metal to join two metals or alloys at a temperature lower than the melting point of the base metal. The brazing filler metal usually has a lower melting point than the base metal. During the heating process, the brazing filler metal melts and flows into the gap between the base metals, and forms a strong connection after cooling. Brazing is also used to seal holes in traditional device walls. Specifically, a head is placed on the outer wall of the device to be sealed, and then the brazing filler metal is melted around the edge of the head and the seal to press and connect.

[0003] However, for the cooling radiator of communication equipment, since its inner cavity is generally filled with liquid, it will have a certain pressure and erosion effect. The existing brazing sealing method has the following defects: First, there is a gap or groove between the seal of the inner wall of the device and the head of the outer cover, which will reduce the welding strength after long-term use. In addition, the internal pressure of the outer cover makes it more likely for the seal to fail; second, when the solder melts, manual pressure can easily cause the connection to be skewed and the connection force to be unbalanced, which also affects the connection strength. Summary of the Invention

[0004] In order to overcome the deficiencies in the background technology and solve existing technical problems, the present invention discloses a brazing sealing device for refrigeration and heat dissipation components, which can seal the inside and outside of the sealing to improve the connection strength and service life.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The radiator is connected with the charging port of the cooling device by welding, and the radiator is connected with the charging port by welding, wherein the radiator is connected with the charging port by welding, and the radiator is connected with the charging port by welding, wherein the radiator is connected with the charging port by welding, and the radiator is connected with the charging port by welding, wherein the radiator is connected with the charging port by welding, and the radiator is connected with the charging port by welding, wherein the radiator is connected with the charging port by welding, and the charging port is connected with the charging port by welding, wherein the radiator is connected with the charging port by welding, wherein the radiator is connected with the charging port by welding,

[0007] Furthermore, the first plugging portion is provided with a limiting ring groove adapted to fit the corresponding end of the first soldering material ring.

[0008] Furthermore, the outer edge of the first plugging portion is inclined toward one end of the first plugging section to form a flow-blocking eaves portion.

[0009] Furthermore, outer edges of the outer end surfaces of the first insertion column section and the second insertion column section are both chamfered.

[0010] Furthermore, a screwing plate is fixed at the center of the outer end surface of the screwing head.

[0011] Furthermore, the outer end surface of the second plugging portion is provided with a positioning ring groove into which the corresponding end of the adapter spring is snapped.

[0012] Furthermore, the cross-sections of the first soldering material ring and the second soldering material ring are both square, and are melt-welded by induction heating or resistance heating.

[0013] Furthermore, the inner ring of the first soldering material ring is close to the corresponding edge of the filling port.

[0014] Furthermore, the first plugging portion and the second plugging portion are both in the shape of a truncated cone, and the bottoms of both portions close to the filling port are large-diameter cones.

[0015] Furthermore, the threaded hole is also equipped with a screw plug.

[0016] Due to the adoption of the above-mentioned technical solution, the present invention has the following beneficial effects:

[0017] The refrigeration and heat dissipation component brazing sealing device disclosed in the present invention adopts an inner plug and an outer plug to seal and weld the inside and outside of the filling port, which can avoid the formation of gaps or grooves at the inner end of the filling port close to the liquid, resulting in pressure erosion and reducing the service life. At the same time, the connection strength is greatly increased through the first brazing material ring and the second brazing material ring; more importantly, before melting the solder, a stud with a screw head is used to pre-tighten the inner plug and the outer plug using a spring. Without additional manual intervention, the inner plug and the outer plug can be balanced and tightened during the solder melting process, thereby improving the brazing effect, especially for shells that cannot be positioned and force applied internally, the use effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the present invention before brazing;

[0019] Figure 2 is a three-dimensional schematic diagram of the connection structure of the screwing head;

[0020] Figure 3 is a three-dimensional schematic diagram of the outer plug;

[0021] Figure 4is a three-dimensional schematic diagram of the inner plug;

[0022] Figure 5 It is a schematic diagram of the implementation structure of the present invention after brazing.

[0023] In the figure: 1. Inner plug; 101. First plugging portion; 102. First plug section; 103. Threaded hole; 104. Flow-blocking eaves; 105. Positioning ring groove; 2. Outer plug; 201. Second plugging portion; 202. Second plug section; 203. Through hole; 204. Positioning ring groove; 3. Filling port; 4. First soldering material ring; 5. Second soldering material ring; 6. Stud; 7. Spring; 8. Screw head; 9. Twist plate. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", and "right" indicating directions or positional relationships, they only correspond to the drawings of the present invention and are for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction.

[0025] Combined with attachment Figure 1-5 The refrigeration and heat dissipation brazing sealing device is a head that seals the radiator charging port 3 by welding. The head includes an inner plug 1 and an outer plug 2 that are T-shaped and correspond to the inner and outer sides of the charging port 3, respectively. Figure 1 As shown, during assembly, the inner plug 1 is actually in an inverted T-shape relative to the outer plug 2. To ensure structural strength, the inner plug 1 and the outer plug 2 can be an integrally formed structure;

[0026] The inner plug 1 comprises a first plugging portion 101 and a first plugging column section 102 fixed at the center of the first plugging portion 101. The first plugging column section 102 is covered with a first soldering material ring 4. The outer diameter of the first soldering material ring 4 is smaller than the diameter of the first plugging portion 101 and larger than the diameter of the filling port 3. Generally, the first soldering material ring 4 is located in the middle position between the first plugging column section 102 and the outer edge of the first plugging portion 101, which can ensure uniform diffusion during fusion welding and try not to exceed the outside of the first plugging portion 101; preferably, the inner circle of the first soldering material ring 4 is close to the corresponding edge of the filling port 3, and when the outer plug 2 does not completely block the filling port 3, molten filling can be carried out through the adjacent first soldering material ring 4; as shown in the attached figure Figure 4 As shown, as needed, the first plugging portion 101 is provided with a limiting ring groove 105 adapted to fit the corresponding end of the first soldering material ring 4. When the inner plug 1 is difficult to manually position and adjust on the inner side of the radiator, the limiting ring groove 105 can be used to position the first soldering material ring 4 in advance; in addition, the outer edge of the first plugging portion 101 is inclined toward one end of the first plug section 102 to form a flow blocking eaves 104, as shown in the attached Figure 5As shown, the outer plug 2 is easy to grind the edge after welding, while the inner part may not be conducive to grinding and trimming. The flow-blocking eaves 104 can properly intercept the molten first solder ring 4 to prevent it from excessively flowing out of the first plugging part 101; a threaded hole 103 is provided in the center of the outer end face of the first plug section 102. The depth of the threaded hole 103 is slightly smaller than the length of the first plug section 102, and sufficient screwing adjustment distance is guaranteed. A stud 6 is threadedly connected to the threaded hole 103, and a screwing head 8 is coaxially fixed to the outer end of the stud 6. The diameter of the screwing head 8 is larger than the filling port 3. By rotating the screwing head 8, the relative distance between the screwing head 8 and the inner plug 1 is adjusted. Specifically, a twisting plate 9 is fixed in the center of the outer end face of the twisting head 8, which is convenient for hand-clamping and force-applying rotation of the twisting plate 9;

[0027] The outer plug 2 includes a second plugging portion 201 and a second plug section 202 fixed in the center of the second plugging portion 201. The second plug section 202 is adapted to be inserted into the filling port 3, and a second soldering material ring 5 is provided between the second plugging portion 201 and the outer edge surface of the corresponding filling port 3 and is sheathed on the second plug section 202. The second soldering material ring 5 can also be located in the middle position of the outer edge of the second plug section 202 and the second plugging portion 201 to ensure uniform diffusion during welding and try not to exceed the second plugging portion 201. A through hole 203 adapted to be inserted into the first plug section 102 is provided in the center of the end face of the outer plug 2, as shown in the attached figure. Figure 5 As shown, after the first soldering material ring 4 and the second soldering material ring 5 are melt-welded, and the outer end face of the second plug section 202 is almost flush with the inner end of the filling port 3, the outer end face of the first plug section 102 is also almost flush with the outer end of the through hole 203; the stud 6 column between the screwing head 8 and the first plugging part 101 is sleeved with a spring 7, and the spring 7 is compressed and stored to automatically force the inner plug 1 and the outer plug 2 to move closer during melt welding. Specifically, the outer end face of the second plugging part 201 is provided with a positioning ring groove 204 for the corresponding end of the spring 7 to be inserted into, so as to prevent the spring 7 from deviating and causing uneven force.

[0028] As needed, the threaded hole 103 is also equipped with a screw plug. After the welding is completed and the stud 6 is removed, the threaded hole 103 can also be sealed with an additional screw plug. In addition, the cross-sections of the first soldering material ring 4 and the second soldering material ring 5 are both square to prevent the first soldering material ring 4 and the second soldering material ring 5 from moving under pressure. Since the positions of the first soldering material ring 4 and the second soldering material ring 5 are not convenient for direct corresponding heating, they are generally melt-welded by induction heating or resistance heating.

[0029] As needed, the first plugging portion 101 and the second plugging portion 201 are both in the shape of a cone, and the bottoms of the cones are large in diameter near the filling port 3 to increase structural strength and facilitate force bearing. In addition, the outer edges of the outer end faces of the first plug-in column section 102 and the second plug-in column section 202 are both chamfered to facilitate plug-in. The chamfer of the second plug-in column section 202 facilitates the filling of the molten first brazing material ring 4, thereby increasing the connection strength.

[0030] To implement the refrigeration and heat dissipation component brazing sealing device described in the present invention, it is only necessary to first coaxially place the second brazing material ring 5 on the outer edge surface of the outer end of the charging port 3, and then insert the second plug section 202 of the outer plug 2 into the charging port 3, so that the second plugging portion 201 presses the second brazing material ring 5, and then insert the first plug section 102 of the inner plug 1 into the through hole 203 of the outer plug 2, so that the first brazing material ring 4 that has been put on in advance can be located between the first plugging portion 101 and the outer edge surface of the inner end of the charging port 3, and then Then put the spring 7 outside the bolt and screw the stud 6 into the threaded hole 103 of the inner plug 1. By compressing the spring 7, the first brazing material ring 4 and the second brazing material ring 5 are squeezed tightly, and the spring 7 also has sufficient elastic force storage. After the first brazing material ring 4 and the second brazing material ring 5 are melted by induction heating or resistance heating, the outer plug 2 and the inner plug 1 are gradually approached under the action of elastic force until the brazing is completed. After cooling and stabilization, the stud 6 and spring 7 can be removed.

[0031] When implementing the above working process, it is particularly important to note that some radiators are composed of two symmetrical die-cast trough shell structures, and the notches of the two trough shell structures are connected by edge flange bolts to form a cavity with a hollow interior, and the filling port 3 is provided on one of the trough shell structure walls. Because the inner plug 1 is larger than the filling port 3, it needs to be placed in the cavity in advance before the connection to form the cavity. In order to ensure welding assembly, it is necessary to use the drop line to hang the outer end face of the first plug section 102 of the inner plug 1 from the outside of the filling port 3, so as not to affect the filling from the filling port 3 into the cavity. After the filling is completed, it is only necessary to tighten the hanging line from the outside to pull the inner plug 1 to the filling port 3 for plug-in assembly.

[0032] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. A brazing sealing device for a refrigeration and heat dissipation component, comprising a sealing head for sealing a radiator charging port by welding, characterized in that: The head includes an inner plug and an outer plug, which correspond to the inside and outside of the filling port respectively and are both T-shaped; the inner plug includes a first plug part and a first plug section fixed at the center of the first plug part, the first plug section is covered with a first soldering material ring, the outer diameter of the first soldering material ring is smaller than the diameter of the first plug part and larger than the diameter of the filling port, a threaded hole is provided in the center of the outer end face of the first plug section, a stud is provided in the threaded hole, and a screw head is coaxially fixed to the outer end of the stud; the outer plug includes a second plug part and a second plug section fixed at the center of the second plug part, the second plug section is adapted to be inserted into the filling port, and a second soldering material ring is provided between the second plug part and the outer edge surface of the corresponding filling port, a through hole is provided in the center of the end face of the outer plug part adapted to be inserted into the first plug section, and a spring is provided on the stud column body between the screwing head and the first plug part.

2. The refrigeration and heat dissipation component brazing sealing device according to claim 1, characterized in that: The first plugging portion is provided with a limiting ring groove adapted to fit the corresponding end of the first soldering material ring.

3. The refrigeration and heat dissipation component brazing sealing device according to claim 1, characterized in that: The outer edge of the first plugging portion is inclined toward one end of the first plugging section to form a flow-blocking eaves portion.

4. The refrigeration and heat dissipation component brazing sealing device according to claim 1, characterized in that: The outer edges of the outer end surfaces of the first plug-in column section and the second plug-in column section are both chamfered.

5. The refrigeration and heat dissipation component brazing sealing device according to claim 1, characterized in that: A screwing plate is fixed at the center of the outer end surface of the screwing head.

6. The refrigeration and heat dissipation component brazing sealing device according to claim 1, characterized in that: The outer end surface of the second plugging portion is provided with a positioning ring groove into which the corresponding end of the adapting spring is clamped.

7. The refrigeration and heat dissipation component brazing sealing device according to claim 1, characterized in that: The cross-sections of the first soldering material ring and the second soldering material ring are both square, and are melt-welded by induction heating or resistance heating.

8. The refrigeration and heat dissipation component brazing sealing device according to claim 1, characterized in that: The inner ring of the first soldering material ring is close to the corresponding edge of the filling port.

9. The refrigeration and heat dissipation component brazing sealing device according to claim 1, characterized in that: The first plugging portion and the second plugging portion are both in a frustum shape, and the bottoms of the frustums close to the filling port are both large in diameter.

10. The refrigeration and heat dissipation component brazing sealing device according to claim 1, characterized in that: The threaded hole is also equipped with a screw plug.

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