Handheld coaxial single water channel forced water cooling intermediate frequency transformer

Abstract

The invention relates to a handheld coaxial single water channel forced water-cooled medium frequency transformer. A hollow center pipe is mounted in a main pipe and provided with a primary winding coil, a sealing rear end cover is arranged at the rear end of the main pipe, a main water return pipe and two water inlet pipes are arranged on the main pipe, the water inlet pipes are communicated with a cavity of the main pipe, two inlet wires of the primary winding coil are positioned in the two water inlet pipes respectively, the main water return pipe is communicated with an inner cavity of the center pipe, a sealing water guide cover with a hole is arranged on the center pipe, a front round end cover is fixedly and integrally connected with the front end of the center pipe, a sealing water cavity is formed between the sealing water guide cover and the front round end cover, a water guide hole communicated with the sealing water cavity is arranged in the front round end cover and communicated with a water inlet of an induction coil, the center pipe is connected with a front end cover in a threaded manner and matched with a semicircular boss of the front round end cover, a water guide inclined hole is arranged in the front round end cover, one end of the water guide inclined hole is communicated with a water outlet of the induction coil, the other end of the water guide inclined hole is communicated with the center pipe, so that single water channel cooling is realized, and the induction coil is fixedly connected with the front round end cover and the front end cover through fixing devices.

Description

Technical field [0001] The invention relates to a handheld coaxial single waterway forced water-cooled intermediate frequency transformer. Background technique [0002] The hand-held coaxial forced water-cooled intermediate frequency transformer is a relatively advanced transformer, which has been studied less domestically. There are certain problems with such transformers that can be found at present: [0003] 1. Two water paths are required for the cooling method, and the resistance of the two water paths is usually not consistent, especially when the inlet and outlet of the induction coil are working, there will be local high temperature and high pressure, which seriously hinders the passage of cooling water flow; It is difficult to guarantee the cooling needs of the induction coil when the two waterways use the same water source (that is, one water pump), that is, under the same water pressure, most of the water will flow from one waterway (induction head inlet pipe, copper sl...

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Problems solved by technology

[0003] 1. Two waterways are needed in the cooling method, and the resistance of the two waterways is usually not consistent, especially when the inlet and outlet of the induction coil are working, local high temperature and high pressure will occur, which seriously hinders the passage of cooling water flow; It is difficult to ensure the cooling needs of the induction coil when the two waterways use the same water source (that is, a water pump), that is, most of the water will flow from one waterway (induction head water inlet pipe, copper sleeve, center pipe, induction coil) under the same water pressure. head return water port), only a small part of water flows through the second waterway (induction coil water inlet, right induction coil base, right induction coil connection block, left induction coil base, induction coil return water port), so forced water cooling The effect will be greatly reduced

[0004] 2. Since the induction coil is the main heating structure, when the cooling water flows out, the temperature is as high as 100 degrees Celsius (depending on the power of the external amplifier, the maximum temperature can reach about 300 degrees Celsius), the requirements for the external water pipe are too high, and it has not yet been able to completely Water pipes suitable for this location

Due to the different solder materials used for welding, electrochemical reactions will occur soon during use, and the structure here cannot be used for a long time

[0006] 4. Because the structure needs to expose the external water pipe, it is easy to be damaged by external force during use. Because the water there is high temperature and high pressure, accidents will occur if you are not careful

[0007] 5. The center tube is welded to the base of the left induction coil, and the welding joint will undergo an electrochemical reaction, which cannot be used for a long time; due to operations such as heating and welding during production, it is difficult to ensure the verticality of the two, which makes subsequent installation difficult, and cannot be used Guarantee the finished product rate of processing, and even if the installation is successful, because the welding place of the two structures is the position with the greatest pressure and external force, it cannot guarantee its long-term use

[0008] 6. The return port of the induction coil and the base of the left induction coil are welded. When the welding of the central tube and the base of the left induction coil is completed, the return port of the induction coil will often fall off.

[0009] 7. The base of the right induction coil and the cylindrical copper sleeve are connected by welding. There will be a current of more than 3000A flowing from the cylindrical copper sleeve to the base of the right induction coil. The current known welding materials cannot meet this position. After use, it is often damaged due to poor contact of the welding port due to current heating; the right induction coil base and the cylindrical copper sleeve have very strict assembly requirements, and it is difficult to ensure the matching position of the two due to heating and welding operations during production Accurate; because the two are welded, the connection between them often falls off when the welding of the two is completed

[0010] 8. The water inlet pipe of the induction head is used to provide cooling water for the whole main body of the structure and also provides the interface for the inlet and outlet of the primary coil. The inlet and outlet of the primary coil are in the same pipe. In the normal use environment, the inlet and outlet of the primary coil There will be a high-frequency current of up to 150A flowing, which will cause a large amount of heat to be emitted from the wire, so the water-cooled structure is required. However, due to the inconsistency of the insulation of the wire, it cannot be guaranteed that the insulation will not be damaged when it is immersed in water for a long time. Water will pass through the same cooling water pipe and cause a short circuit

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