CN107252947B - A clamp for heat dissipation connectors - Google Patents

Abstract

The invention discloses a kind of fixtures for the connector that radiates, and are made of fixture and C/C radiating fin and stainless steel hot pipe connections；The top board of fixture is fixed by the top board bolt in support base with the cooperation of top board nut, and two pieces of top board baffles are separately fixed on the inside of the framework upper wall of end, and two pieces of top board baffles are located at the two sides of top board, and top board baffle is for preventing top board from rotating.There is arc groove for placing stainless steel heat pipe among support base open section bottom plate.Lower platen is fixed by pushing crab bolt and pushing crab bolt cooperation, and lower platen is located at the end that C/C radiating fin Yu stainless steel hot pipe connections are loaded below top board.C/C radiating fin and stainless steel heat pipe are tightly fastened by top board and lower platen, and do not destroy the structure of C/C radiating fin Yu stainless steel heat pipe, efficiently solves the unstable and welding loose phenomenon that sample in welding process is placed.Clamp structure is simple, easy to use and operate.

Description

A clamp for heat dissipation connectors

technical field

The invention relates to the technical field of welding jigs, in particular to a jig for a heat-dissipating connector used for welding C/C heat-dissipating fins and stainless steel heat pipes.

Background technique

The research and development of new materials and new technologies is of decisive significance for the development of scientific and technological equipment. In some special application fields, there are special and harsh requirements for materials. High-power density devices used in communication satellites and plasma-facing materials used in nuclear fusion devices will generate and accumulate a large amount of heat during operation. In order to ensure the stable operation of the equipment, a large amount of heat needs to be dissipated in time.

With the rapid economic development and increasing energy demand, the utilization of nuclear energy will become an important part of my country's energy development. In order to ensure the safety of nuclear reactors, especially when the core temperature rises rapidly when the nuclear reactor fails, the heat generated in the nuclear reaction must be transferred out in time. Heat pipe is a high-efficiency heat transfer element. With the mature development of heat pipe technology, its application in nuclear power engineering is becoming more and more extensive. However, in order to better dissipate the excess heat and improve the heat dissipation efficiency of the heat pipe, additional high thermal conductivity materials are required to connect it.

Literature “Proposal for a modified non-active brazing alloy, V. Casalegno, Th. Koppitz, G. Pintsuk, M. Salvo, S. Rizzo, S. Perero, M. Ferraris. Composites: PartB, 56(2014) 882– A CFC/Cu direct connection method is proposed in 888", the connection method is to hollow out the center of the C/C composite material, and then insert the Cu tube into the hollow hole for brazing. But this is a big waste for the C/C composite material, and it is difficult to ensure that the solder will spread evenly when the Cu tube is inserted into the hollow hole.

However, there are two problems involved in the welding of C/C fins and stainless steel heat pipes: one is that there is an arc groove along the length in the center of the C/C fins, so This makes it difficult to flatten the C/C heat dissipation fins to be connected with the metal hollow heat pipe; the second is how to fix the metal hollow heat pipe after the metal hollow heat pipe is docked with the C/C heat dissipation fin, so as to avoid placing the metal hollow heat pipe in the vacuum furnace. It will not loosen or fall, and it will have a relatively good connection effect after fixing. It is necessary to design a fixture to solve the problem.

SUMMARY OF THE INVENTION

In order to avoid the deficiencies of the prior art, the present invention proposes a clamp for heat dissipation connectors, which tightly fixes the C/C heat dissipation fins and the stainless steel heat pipes during processing without damaging the C/C heat dissipation fins The structure of the stainless steel heat pipe effectively solves the unstable placement of the sample and the looseness of the welding during the welding process.

The technical solution adopted by the present invention to solve the technical problem is: including C/C radiating fins, stainless steel heat pipes, and a support base, characterized in that the support base includes a lower pressure plate, an upper pressure plate, an upper pressure plate baffle, a lower pressure plate Bolts, lower pressure plate nuts, upper pressure plate bolts, upper pressure plate nuts, the support base is a horizontally placed L-shaped frame structure, there are two screw holes in the middle of the upper wall of the frame body at the end of the support base, and the open section of the support base There is an arc-shaped groove in the axial direction of the bottom plate for placing the stainless steel heat pipe, and the central axis of the screw hole on the frame at the end of the support base is perpendicular to the axis of the bottom plate of the support base;

The upper pressure plate is a circular arc panel with a through hole at one end. The upper pressure plate is fixed by the upper pressure plate bolt and the upper pressure plate nut. The two upper pressure plate baffles are respectively located on both sides of the upper pressure plate, and the upper pressure plate baffle is fixed at the end. On the inner side of the upper wall of the frame, the upper pressure plate is moved up and down by screwing the upper pressure plate bolt and the upper pressure plate nut, and the upper pressure plate baffle is used to prevent the upper pressure plate from rotating;

The lower pressure plate is a U-shaped frame body, and there is a through hole in the middle of the upper end of the lower pressure plate. The lower pressure plate is fixed by the lower pressure plate bolt and the lower pressure plate nut. The lower pressure plate is located below the upper pressure plate. At the end of the heat pipe connector, the lower pressing plate is installed in parallel with the bottom plate of the support base.

The support base, the upper pressure plate and the lower pressure plate are all made of high-strength graphite materials.

The arc surface of the upper pressing plate and the axial arc groove of the support base are coaxially matched with the stainless steel heat pipe.

beneficial effect

A clamp for heat dissipation connectors proposed by the present invention is composed of clamps, C/C heat dissipation fins and stainless steel heat pipe connection parts; two screw holes are arranged in the middle of the upper wall of the frame body at the end of the support base of the clamp, and the upper pressure plate The two upper pressure plate baffles are respectively fixed on the inner side of the upper wall of the end frame body, and the two upper pressure plate baffles are located on both sides of the upper pressure plate. The upper pressure plate baffles are used to prevent the upper pressure plate turn. The middle of the bottom plate of the open section of the support base is axially provided with an arc-shaped groove for placing the stainless steel heat pipe. The lower pressure plate is fixed by the lower pressure plate bolt and the lower pressure plate nut. The lower pressure plate is located below the upper pressure plate and is clamped at the end of the C/C heat dissipation fin and the stainless steel heat pipe connector. The lower pressure plate is installed in parallel with the bottom plate of the support base. The C/C heat dissipation fins and the stainless steel heat pipes are tightly fixed by the upper and lower pressure plates, and the structure of the C/C heat dissipation fins and the stainless steel heat pipes is not damaged, which effectively solves the problem of uneven placement of the sample and loose welding during the welding process. . The clamp used for the heat dissipation connector has a simple structure and is easy to use and operate.

Description of drawings

A clamp for a heat dissipation connector of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

Figure 1 is a schematic diagram of the assembly of the C/C cooling fin and the stainless steel heat pipe.

FIG. 2 is a schematic diagram of the assembly of the clamp used for the heat dissipation connector and the heat dissipation connector according to the present invention.

FIG. 3 is a schematic structural diagram of a clamp used for a heat dissipation connector according to the present invention.

In the picture:

1. C/C cooling fins 2. Stainless steel heat pipe 3. Support base 4. Lower pressure plate 5. Upper pressure plate 6. Upper pressure plate baffle 7. Lower pressure plate bolts 8. Lower pressure plate nuts 9. Upper pressure plate bolts 10. Upper pressure plate nut

Detailed ways

This embodiment is a clamp for a heat dissipation connector.

Referring to FIGS. 1 to 3 , the clamp used for the heat dissipation connector in this embodiment is composed of C/C heat dissipation fins 1, stainless steel heat pipes 2, and a support base 3; wherein, the support base 3 includes a lower pressure plate 4 and an upper pressure plate. 5. Upper pressure plate baffle 6, lower pressure plate bolt 7, lower pressure plate nut 8, upper pressure plate bolt 9, upper pressure plate nut 10, the support base 3 is a horizontally placed L-shaped frame structure, and the frame at the end of the support base 3 There are two screw holes in the middle of the upper wall, and there are arc grooves in the middle of the bottom plate of the open section of the support base 3 for placing the stainless steel heat pipe 2. The central axis of the screw holes on the frame at the end of the support base 3 is perpendicular to the support base. The axis of the base plate. The upper pressure plate 5 is a circular arc panel, and one end of the upper pressure plate 5 has a through hole, and the upper pressure plate 5 is fixed by the upper pressure plate bolt 9 and the upper pressure plate nut 10 . The two upper pressure plate baffles 6 are respectively located on both sides of the upper pressure plate 5. The upper pressure plate baffles 6 are welded and fixed on the inner side of the upper wall of the end frame body. The upper pressure plate 5 is moved up and down by screwing the upper pressure plate bolts 9 and the upper pressure plate nuts 10. , the upper platen baffle 6 is used to prevent the rotation of the upper platen 5 . The lower pressing plate 4 is a U-shaped frame body. There is a through hole in the middle of the lower pressing plate 4. The lower pressing plate 4 is fixed by the lower pressing plate bolt 7 and the lower pressing plate nut 8. The end of the connecting piece between the fin 1 and the stainless steel heat pipe 2, the lower pressing plate 4 is installed in parallel with the bottom plate of the support base. The arc surface of the upper pressing plate 5 and the axial arc groove of the support base 3 are coaxially matched with the stainless steel heat pipe 2 .

In this embodiment, the support base 3, the upper pressure plate 5, and the lower pressure plate 4 are all made of high-strength graphite materials.

Operation steps of the present embodiment:

Step 1. Grind the surfaces of the lower platen 4 and the upper platen 5 to prevent contact incompleteness when matching with the C/C heat dissipation fins 1 and the stainless steel heat pipe 2 heat dissipation connectors. Then, the lower pressure plate 4 and the upper pressure plate 5 are respectively sleeved on the lower pressure plate bolts 7 and the upper pressure plate bolts 9, and fixed by the lower pressure plate nut 8 and the upper pressure plate nut 10 respectively.

Step 2. Assemble the heat dissipation connector, including the C/C heat dissipation fin 1 and the stainless steel heat pipe 2, before brazing, and then place the heat dissipation connector stably in the middle arc groove of the support base 3.

Step 3. Drive the lower pressing plate nut 8 to move up and down by screwing the lower pressing plate bolts 7 on the support base, so that the lower pressing plate 4 moves up and down until the C/C cooling fins 1 are clamped by the lower pressing plate 4 .

Step 4. Drive the upper pressure plate nut 10 to move up and down by screwing the upper pressure plate bolt 9 on the support base, so that the upper pressure plate 5 moves up and down until the stainless steel heat pipe 2 is clamped by the upper pressure plate 5 .

Step 5. The two ends of the clamp used for the heat dissipation connector have the same structure, and the other end is also fixed through the operation steps; the C/C heat dissipation fin 1 and the stainless steel heat pipe 2 are assembled before brazing, and then the heat dissipation connector is placed on the In the arc-shaped groove in the middle of the support base 3; the lower pressure plate nut 8 is moved up and down by screwing the lower pressure plate bolt 7 on the support base, so that the lower pressure plate 4 moves up and down until the C/C cooling fin 1 is pressed down by the lower plate. 4. Clamp; at the same time, drive the upper pressure plate nut 10 to move up and down by screwing the upper pressure plate bolt 9 of the support base, so that the upper pressure plate 5 moves up and down until the stainless steel heat pipe 2 is clamped by the upper pressure plate 5.

Step 6. After the heat dissipation connector is fixedly connected with both ends of the fixture, it is then placed in a vacuum hot pressing furnace for high temperature brazing connection.

Step 7. After the brazing is completed, the entire fixture of the heat dissipation connector is taken out from the vacuum hot pressing furnace to check the experimental results. The post-test results of the heat dissipation connector show that the solder spreads evenly, and there are no obvious signs of holes and cracks in the middle layer.

Claims (3)

1. a clamp for heat dissipation connector, comprising C/C heat dissipation fin, stainless steel heat pipe, support base, it is characterized in that: described support base comprises lower pressing plate, upper pressing plate, upper pressing plate baffle, lower pressing plate Bolts, lower pressure plate nuts, upper pressure plate bolts, upper pressure plate nuts, the support base is a horizontally placed L-shaped frame structure, there are two screw holes in the middle of the upper wall of the frame body at the end of the support base, and the open section of the support base There is an arc-shaped groove in the axial direction of the bottom plate for placing the C/C cooling fins, and the central axis of the screw hole on the frame body at the end of the support base is perpendicular to the axis of the bottom plate of the support base; The upper pressure plate is a circular arc panel with a through hole at one end. The upper pressure plate is fixed by the upper pressure plate bolt and the upper pressure plate nut. The two upper pressure plate baffles are respectively located on both sides of the upper pressure plate, and the upper pressure plate baffle is fixed on the support base. On the inner side of the upper wall of the frame body at the end of the seat, the upper pressure plate is moved up and down by screwing the upper pressure plate bolt and the upper pressure plate nut, and the upper pressure plate baffle is used to prevent the upper pressure plate from rotating; The lower pressing plate is a U-shaped frame body, and there is a through hole in the middle of the upper end of the lower pressing plate. The lower pressing plate is fixed by the lower pressing plate bolt and the lower pressing plate nut. At the end of the stainless steel heat pipe connector, the lower pressing plate is installed in parallel with the bottom plate of the support base. 2. The clamp for heat dissipation connector according to claim 1, characterized in that: the support base, the upper pressing plate and the lower pressing plate all adopt high-strength graphite material. 3. the clamp for heat dissipation connector according to claim 1, is characterized in that: the arc surface of upper pressing plate and the axial arc groove of support base and stainless steel heat pipe are coaxial matching.