Vacuum electromagnetic induction melting furnace crucible water cooling system

Abstract

The crucible water cooling system comprises a water jacket and a crucible, the water jacket comprises a base, an outer sleeve body, a first inner sleeve body, a second inner sleeve body, a water inlet pipe, a water outlet pipe and a crucible connecting part, the upper portion and the lower portion of the outer sleeve body are open, and the outer sleeve body is fixedly installed on the base; the first inner sleeve body is fixedly arranged at the upper part of the inner side of the outer sleeve body; the second inner sleeve body is fixedly installed on the lower portion of the inner side of the outer sleeve body, a through hole is formed in the middle of the sealing plate, and the sealing plate and the base are parallel and spaced by a certain distance. The water inlet pipes are symmetrically and fixedly arranged at the lower part of the outer sleeve body; the water outlet pipes are symmetrically and fixedly installed on the upper portion of the outer sleeve body. The launder and the turbulent flow ribs are arranged on the outer side of the crucible, the launder can enlarge the contact area of the crucible and water flow, and the cooling effect is improved; the turbulent flow ribs are beneficial to converting the state of water flow from advection to turbulent flow, a vaporization film on the outer wall of the crucible at the initial stage of pouring is taken away, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of vacuum electromagnetic induction melting, and relates to a cooling device for a crucible after casting, in particular to a crucible water cooling system for a vacuum electromagnetic induction melting furnace. Background Art

[0002] The vacuum electromagnetic induction melting furnace has the advantages of purifying metals, accurately controlling chemical composition, preventing oxidation, refining grains, and helping to eliminate defects such as pores and looseness. After smelting, high-quality metals can be obtained, and they are widely used in the production of special alloy materials such as nickel-based high-temperature alloys, titanium alloys, stainless steel, and ultra-high-strength steel. The cooling rate of the alloy after casting has a significant impact on its microstructure, segregation degree, precipitation phase, and mechanical properties, and directly affects the production efficiency of the product.

[0003] The existing crucible water cooling system of vacuum furnace has the following problems: 1. The structure is complex, and it is easy to have circulation dead corners, and the cooling efficiency is low; 2. The contact mode between the crucible and the water flow is single, and the cooling effect is limited; 3. The water cooling system is connected to the inlet and outlet pipes of the furnace body through a hose, and leakage is prone to occur at the interface, causing the vacuum degree in the furnace body to decrease, which not only affects the quality of alloy smelting, but also poses a safety hazard. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a vacuum electromagnetic induction melting furnace crucible water cooling system with high cooling efficiency.

[0005] The technical solution adopted by the utility model to solve the technical problem is:

[0006] A crucible water cooling system for a vacuum electromagnetic induction melting furnace comprises: a water jacket and a crucible, wherein the water jacket comprises:

[0007] A base, an outer sleeve, a first inner sleeve, a second inner sleeve, a water inlet pipe, a water outlet pipe and a crucible connecting part, the outer sleeve is open at the top and bottom, and the outer sleeve is fixedly mounted on the base; the first inner sleeve is fixedly mounted on the inner upper part of the outer sleeve, and is spaced a certain distance from the outer sleeve, and the first inner sleeve is open at the top and bottom; the second inner sleeve is fixedly mounted on the inner lower part of the outer sleeve, and is spaced a certain distance from the outer sleeve; the upper end of the second inner sleeve is open, and a sealing plate is installed at the lower end, a through hole is formed in the middle of the sealing plate, and the sealing plate is parallel to the base and spaced a certain distance apart; there are two water inlet pipes, which are symmetrically fixedly mounted on the lower part of the outer sleeve; there are two water outlet pipes, which are symmetrically fixedly mounted on the upper part of the outer sleeve; the crucible connecting part is made on the top of the outer sleeve; the top outer edge of the crucible is fastened to the crucible connecting part of the water jacket by bolts.

[0008] Furthermore, the outer ring wall of the crucible is evenly provided with flow grooves.

[0009] Furthermore, the outer ring wall of the crucible is evenly provided with spoiler ribs.

[0010] Furthermore, the water inlet pipe and the outer casing form an angle of 45 to 60 degrees.

[0011] Furthermore, a sealing ring is embedded on the top surface of the crucible connecting portion.

[0012] Furthermore, the water outlet pipe is vertically arranged to the outer casing.

[0013] The advantages and positive effects of the utility model are:

[0014] 1. The crucible of the utility model is provided with flow grooves and spoiler ribs on the outside. The flow grooves can increase the contact area between the crucible and the water flow, thereby increasing the cooling effect; the spoiler ribs help to convert the state of the water flow from horizontal flow to turbulent flow, thereby taking away the vaporized film on the outer wall of the crucible in the initial stage of pouring, thereby increasing the heat exchange efficiency.

[0015] 2. The water cooling system of the utility model has a simple structure and no circulation corners, which improves the cooling efficiency. After the crucible is removed, the dirt in the water jacket can be quickly and completely cleaned without any influence on the cooling efficiency of the equipment.

[0016] 3. The water inlet of the utility model has a certain angle with the outer baffle of the water jacket, which reduces the energy loss caused by the vertical impact of the outer baffle when the water enters the water jacket. There are two sets of water inlet and outlet pipes, which doubles the water circulation efficiency around the crucible, speeds up the cooling speed of the alloy ingot, ensures product quality, and improves production efficiency.

[0017] 4. The crucible of the utility model is connected to the water jacket by bolts, nuts, washers and sealing rings, which is easy to disassemble and assemble, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the internal structure of the utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the crucible. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and through specific embodiments. The following embodiments are merely descriptive and not restrictive, and the protection scope of the present invention cannot be limited thereto.

[0021] A crucible water cooling system for a vacuum electromagnetic induction melting furnace comprises: a water jacket and a crucible 2, wherein the water jacket comprises: a base 8, an outer sleeve 1, a first inner sleeve 11, a second inner sleeve 9, a water inlet pipe 5, a water outlet pipe 7 and a crucible connecting portion 6, wherein the outer sleeve 1 is open at the top and bottom, and the outer sleeve 1 is fixedly mounted on the base 8; the first inner sleeve 11 is fixedly mounted on the inner upper part of the outer sleeve 1, and is spaced a certain distance from the outer sleeve 1, and the first inner sleeve 11 is open at the top and bottom; the second inner sleeve 9 is fixedly mounted on the inner lower part of the outer sleeve 1, and is spaced a certain distance from the outer sleeve 1; the second inner sleeve 9 is open at the top, and a sealing plate 12 is installed at the bottom, a through hole 10 is formed in the middle of the sealing plate 12, and the sealing plate 12 is parallel to the base 8 and spaced a certain distance apart.

[0022] There are two sets of water inlet and outlet pipes 7, which double the water circulation efficiency around the crucible 2, accelerate the cooling speed of the alloy ingot, ensure product quality, and improve production efficiency. The water inlet pipe 5 is symmetrically fixed at the lower part of the outer shell 1; the water outlet pipe 7 is symmetrically fixed at the upper part of the outer shell 1, and the water outlet pipe 7 is vertically arranged with the outer shell 1.

[0023] The crucible connection part 6 is made on the top of the outer casing 1, and a sealing ring 3 is embedded on the top surface of the crucible connection part 6. The top outer edge of the crucible 2 is fastened to the crucible connection part 6 of the water jacket by bolts 4. It is easy to disassemble and assemble, and the production efficiency is improved.

[0024] In order to increase the contact area with the water flow, flow grooves 13 are evenly formed on the outer ring wall of the crucible 2.

[0025] In order to improve the efficiency of heat exchange, spoiler ribs 14 are evenly formed on the outer ring wall of the crucible 2 .

[0026] In order to reduce the energy loss caused by vertical impact on the outer baffle when water flows into the water jacket, the water inlet pipe 5 and the outer jacket body 1 form an angle of 45 to 60 degrees.

[0027] The working principle of this utility model:

[0028] After the main waterway is opened, the water flows directly into the space between the outer casing 1 and the second inner casing 9 through the water inlet pipes 5 at the bottom ends of both sides of the water jacket, and then the water flows into the space formed by the second inner casing 9 and the crucible 2 through the through hole 10 to cool the cast alloy. The outer wall of the crucible 2 is provided with a flow groove 13 to increase the contact area with the water flow by about 1 / 3. The outer wall of the crucible 2 is provided with a spoiler rib 14. The melting point of the smelting alloy is mostly above 1000°C. In the initial stage of alloy liquid casting, the temperature of the crucible 2 can reach above 100°C. Part of the flowing water in contact with the outer wall of the crucible 2 forms a vaporized film attached to the outer wall of the crucible 2, affecting the heat exchange effect. The spoiler rib 14 helps to convert the state of the water flow from horizontal flow to turbulent flow, taking away the vaporized film and increasing the heat exchange efficiency. The water flow absorbing heat rushes into the space formed by the first inner casing 11 and the outer casing 1 under the impact of the water inlet pressure, and then flows into the water outlet pipe 7 and flows out of the water cooling system, so as to achieve the purpose of quickly cooling the alloy ingot in the crucible 2.

[0029] The utility model is applied to the rapid cooling of vacuum electromagnetic induction melting crucible.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the concept of the present invention, which all fall within the scope of protection of the present invention.

Claims

1. A crucible water cooling system for a vacuum electromagnetic induction melting furnace, characterized in that: include: A water jacket and a crucible (2), wherein the water jacket comprises: Base (8), An outer shell (1), the outer shell (1) being open at the top and the bottom, and the outer shell (1) being fixedly mounted on the base (8); A first inner casing (11), wherein the first inner casing (11) is fixedly mounted on the inner upper portion of the outer casing (1) and is spaced a certain distance from the outer casing (1), and the first inner casing (11) is open at the top and bottom; a second inner sleeve (9), the second inner sleeve (9) being fixedly mounted on the inner lower part of the outer sleeve (1) and being spaced a certain distance from the outer sleeve (1); the second inner sleeve (9) having an open upper end and a sealing plate (12) being mounted on the lower end, a through hole (10) being formed in the middle of the sealing plate (12), the sealing plate (12) being parallel to the base (8) and spaced a certain distance from the base; Water inlet pipes (5), two of which are symmetrically fixed on the lower part of the outer casing (1); Water outlet pipes (7), two of which are symmetrically fixed on the upper part of the outer casing (1); and a crucible connection portion (6), wherein the crucible connection portion (6) is formed on the top of the outer casing (1); The top outer edge of the crucible (2) is fastened to the crucible connecting portion (6) of the water jacket via bolts (4).

2. The crucible water cooling system of the vacuum electromagnetic induction melting furnace according to claim 1, characterized in that: The outer ring wall of the crucible (2) is evenly provided with flow grooves (13).

3. The crucible water cooling system of the vacuum electromagnetic induction melting furnace according to claim 2, characterized in that: The outer annular wall of the crucible (2) is evenly provided with flow-turbulating ribs (14).

4. The crucible water cooling system of the vacuum electromagnetic induction melting furnace according to claim 3, characterized in that: The water inlet pipe (5) and the outer casing (1) form an angle of 45 to 60 degrees.

5. The crucible water cooling system of the vacuum electromagnetic induction melting furnace according to claim 4, characterized in that: A sealing ring (3) is embedded on the top surface of the crucible connecting portion (6).

6. The crucible water cooling system of the vacuum electromagnetic induction melting furnace according to claim 5, characterized in that: The water outlet pipe (7) is arranged vertically to the outer casing (1).

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