CN219357865U

CN219357865U - Quick cooling device for molten metal in ingot casting chamber of vacuum induction furnace

Info

Publication number: CN219357865U
Application number: CN202320128608.7U
Authority: CN
Inventors: 房金宁; 郭冠军; 刘明辉
Original assignee: Herz Special Metallurgy Plant Shanghai Co ltd
Current assignee: Herz Special Metallurgy Plant Shanghai Co ltd
Priority date: 2023-01-16
Filing date: 2023-01-16
Publication date: 2023-07-18
Anticipated expiration: 2033-01-16

Abstract

The utility model discloses a quick cooling device for molten metal in an ingot room of a vacuum induction furnace, which relates to the technical field of cooling devices and comprises an ingot room, a centrifugal fan, a cold air inlet pipe, a gas heat exchanger and a hot gas outlet pipe, wherein a steel ingot mold is arranged in the ingot room, a fan outlet pipe is arranged at an air outlet of the centrifugal fan, a fan inlet pipe is arranged at an air inlet of the centrifugal fan, the fan inlet pipe is connected with a first bracket, a base is arranged at the lower end of the centrifugal fan, the cold air inlet pipe is connected with the cold air inlet pipe through a first flange, and the cold air inlet pipe is communicated with a fan outlet pipe through a first pneumatic valve. According to the utility model, the rapid cooling of the inert gas is realized, the cooled inert gas is recycled to flow into the ingot mould in the ingot chamber, the heat of the ingot mould is taken away, the rapid cooling of the ingot mould is realized, and the solidification quality of the ingot mould is improved.

Description

Quick cooling device for molten metal in ingot casting chamber of vacuum induction furnace

Technical Field

The utility model relates to the technical field of cooling devices, in particular to a rapid cooling device for molten metal in an ingot casting chamber of a vacuum induction furnace.

Background

The vacuum induction smelting furnace is mainly used for primary smelting equipment for producing high-temperature alloy materials, precise alloy materials, ultra-high strength steel and other materials, and is mainly applied to the fields of aviation industry and the like. The vacuum induction smelting furnace is vacuum smelting complete equipment for producing eddy current in a metal conductor by utilizing electromagnetic induction to heat furnace burden to smelt under the vacuum condition, so that the metal is melted.

With the development of modern science and technology, especially the rapid development of modern aerospace, nuclear power and military industry, the scale of a vacuum induction melting furnace is from early kilogram level to several tons and tens of tons at present, the vacuum induction furnace is developed to be large, high-end and intelligent, the vacuum induction furnace is cast to a steel ingot mould after alloy materials are melted, steel is tapped after an ingot room is naturally cooled, and under the condition that the furnace type becomes larger and larger, the natural cooling mode has low efficiency under vacuum condition, the alloy liquid has long cooling time, and long cooling time is very easy to generate segregation and shrinkage cavity defects on the alloy liquid, which are confusing the technological staff at any moment, so that a rapid cooling device for the alloy liquid in the ingot room of the vacuum induction furnace is needed to change the current situation.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a device for rapidly cooling molten metal in an ingot casting chamber of a vacuum induction furnace. The method has the advantages that the rapid cooling of the inert gas is realized, the cooled inert gas is recycled to flow into the ingot mould in the ingot chamber, the heat of the ingot mould is taken away, the rapid cooling of the ingot mould is realized, and the solidification quality of the ingot mould is improved.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a quick cooling device of vacuum induction furnace ingot room molten metal, includes ingot room, centrifugal fan, air conditioning air-supply line, gas heat exchanger and steam air-supply line, be provided with the ingot mould in the ingot room, centrifugal fan air outlet is provided with the fan outlet duct, the centrifugal fan air intake is provided with the fan intake pipe, fan intake pipe connection has first support, the centrifugal fan lower extreme is provided with the base, air conditioning air-supply line and air conditioning inlet line pass through first flange joint, air conditioning air-supply line and fan outlet duct are linked together through first pneumatic valve;

the air outlet of the gas heat exchanger is provided with a heat exchange air outlet pipe, the air inlet of the gas heat exchanger is provided with a heat exchanger air inlet pipe, the heat exchange air outlet pipe is communicated with the air inlet pipe of the fan through a second pneumatic valve, two ends of the gas heat exchanger are respectively provided with a water inlet and a water outlet, and the gas heat exchanger is fixed above the ingot casting chamber through a second bracket.

The utility model is further arranged that the hot gas outlet pipe is connected with a hot gas outlet pipe at the upper end of the ingot casting chamber through a second flange, and the hot gas outlet pipe is communicated with a heat exchanger air inlet pipe through a third pneumatic valve.

The utility model is further arranged that a cold air inlet pipe is arranged on the inner wall of one side of the ingot casting chamber.

The utility model is further arranged that an external gas pipe is arranged on the inner wall of one side of the ingot casting chamber, which is close to the cold air inlet pipe.

The utility model is further arranged that the gas heat exchanger is provided with a plurality of groups of heat exchange mechanisms, the heat exchange mechanisms consist of heat exchange plates and high-speed water pipes, and flowing gas flowing at high speed is arranged in the gas heat exchanger.

The utility model is further arranged that the flowing gas is an inert gas, and the inert gas is argon or helium.

The beneficial effects of the utility model are as follows:

1. according to the quick cooling device for the molten metal in the ingot chamber of the vacuum induction furnace, a set of inert gas circulation cooling mode is arranged, inert gas is filled into the ingot chamber, hot gas is pumped out through the centrifugal fan, the hot gas above the ingot mould chamber is connected into the gas heat exchanger, quick cooling of the inert gas is achieved, the cooled inert gas is recycled to flow into the ingot mould in the ingot chamber, heat of the ingot mould is taken away, quick cooling of the ingot mould is achieved, solidification quality of the ingot mould is improved, meanwhile, the inert gas is filled, reaction with the molten metal is avoided, and steel ingot quality is protected.

2. This quick cooling device of vacuum induction furnace ingot casting room molten metal is provided with a plurality of heat transfer mechanism of groups in the gas heat exchanger, and a plurality of heat transfer mechanism of groups improve with the area of contact of high temperature gas, and long and thin water pipe lets in high pressure fast rivers and takes away the heat of high temperature gas in the gas heat exchanger fast to realize the quick cooling of high temperature gas, improve the heat exchange efficiency of high temperature gas greatly.

Drawings

Fig. 1 is a schematic diagram of a front view structure of a device for rapidly cooling molten metal in an ingot chamber of a vacuum induction furnace;

FIG. 2 is an enlarged schematic view of the structure shown at A in FIG. 1;

fig. 3 is a schematic top view of a device for rapidly cooling molten metal in an ingot chamber of a vacuum induction furnace according to the present utility model;

fig. 4 is a schematic diagram of a left-hand structure of a device for rapidly cooling molten metal in an ingot chamber of a vacuum induction furnace according to the present utility model.

In the figure: 1. an ingot casting chamber; 11. ingot mould; 12. a cold air inlet pipe; 13. a hot gas outlet pipe; 14. externally connecting a gas pipe; 2. a centrifugal fan; 21. a fan air outlet pipe; 22. an air inlet pipe of the fan; 23. a base; 24. a first bracket; 3. a cold air inlet pipe; 31. a first flange; 32. a first pneumatic valve; 4. a gas heat exchanger; 41. a heat exchange air outlet pipe; 42. a heat exchanger air inlet pipe; 43. a second pneumatic valve; 44. a water inlet; 45. a water outlet; 46. a second bracket; 47. a heat exchange mechanism; 471. a heat exchange plate; 472. a high-speed water pipe; 48. flowing a gas; 5. a hot gas outlet pipe; 51. a second flange; 52. and a third pneumatic valve.

Detailed Description

The technical scheme of the patent is further described in detail below with reference to the specific embodiments.

Embodiments of the present patent are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the patent and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and are therefore not to be construed as limiting the patent.

In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art as the case may be.

Referring to fig. 1-4, a quick cooling device for molten metal in an ingot room of a vacuum induction furnace comprises an ingot room 1, a centrifugal fan 2, a cold air inlet pipe 3, a gas heat exchanger 4 and a hot air outlet pipe 5, wherein a steel ingot mold 11 is arranged in the ingot room 1, high-temperature alloy liquid of the steel ingot mold 11 is quickly cooled and solidified and molded in the ingot room 1, defects such as steel ingot segregation and shrinkage cavity are reduced, a fan air outlet pipe 21 is arranged at an air outlet of the centrifugal fan 2, a fan air inlet pipe 22 is arranged at an air inlet of the centrifugal fan 2, the fan air inlet pipe 22 is connected with a first bracket 24, a base 23 is arranged at the lower end of the centrifugal fan 2, the cold air inlet pipe 3 is connected with the cold air inlet pipe 12 through a first flange 31, and the cold air inlet pipe 3 is communicated with a fan air outlet pipe 21 through a first pneumatic valve 32;

the air outlet of the gas heat exchanger 4 is provided with a heat exchange air outlet pipe 41, the air inlet of the gas heat exchanger 4 is provided with a heat exchanger air inlet pipe 42, the heat exchange air outlet pipe 41 is communicated with the fan air inlet pipe 22 through a second pneumatic valve 43, two ends of the gas heat exchanger 4 are respectively provided with a water inlet 44 and a water outlet 45, and the gas heat exchanger 4 is fixed above the ingot casting chamber 1 through a second bracket 46.

Specifically, the hot gas outlet pipe 5 is connected with the hot gas outlet pipe 13 at the upper end of the ingot casting chamber 1 through a second flange 51, and the hot gas outlet pipe 5 is communicated with the heat exchanger air inlet pipe 42 through a third pneumatic valve 52.

Specifically, the inner wall of one side of the ingot chamber 1 is provided with a cold air inlet pipe 12, and the inner wall of one side of the ingot chamber 1, which is close to the cold air inlet pipe 12, is provided with an external gas pipe 14, so that the rapid circulation of cold and hot gas and the rapid cooling of the ingot mould 11 are realized by the distributed design.

Specifically, the gas heat exchanger 4 is provided with a plurality of groups of heat exchange mechanisms 47, the heat exchange mechanisms 47 are composed of heat exchange plates 471 and high-speed water pipes 472, flowing gas 48 flowing at high speed is arranged in the gas heat exchanger 4, the contact area between the heat exchange mechanisms 47 and the flowing gas 48 is increased by the plurality of groups of heat exchange mechanisms 47, and the heat of the flowing gas 48 in the gas heat exchanger 4 is taken away by the long and thin high-speed water pipes 472 through fast water flow, so that the fast cooling of the flowing gas 48 is realized, the hot gas is quickly converted into cold gas, and the heat exchange efficiency of the gas is improved.

Specifically, the flowing gas 48 is inert gas, the inert gas is argon or helium, and the inert gas is filled to avoid reaction with molten metal and protect the quality of the steel ingot.

Working principle: according to the utility model, after casting is completed, a cast ingot chamber door is opened after molten metal is filled in an cast ingot mould and is solidified and formed, an cast ingot mould is moved out of the cast ingot chamber to finish the production of a steel ingot, according to the utility model, after casting is completed, the cast ingot chamber 1 is in a vacuum state, in order to realize rapid cooling of the molten metal in the steel ingot mould 11, inert gas argon is filled into an inert gas air inlet of the cast ingot chamber 1 in the first step, the argon pressure is 0.6-0.7MPa, the ventilation time is 5 minutes, deionized water is filled into the gas heat exchanger 4, the water inlet temperature is 25-35 ℃, the water inlet pressure is 0.3-0.4MPa, the third pneumatic valve 52, the second pneumatic valve 43 and the first pneumatic valve are sequentially opened, the centrifugal fan 2 is started, argon is fully contacted with the cast ingot mould 11, the argon temperature is rapidly increased, the high temperature of the cast ingot is rapidly cooled by the centrifugal fan 2, the high temperature argon enters the gas heat exchanger 4 through the hot air outlet pipe 5, the groups of heat exchange mechanisms 47 in the gas heat exchanger 4 are greatly increased, the heat exchange efficiency of the steel ingot mould is rapidly increased, the heat of the high temperature of the steel ingot is rapidly cooled by the high temperature of the steel ingot mould 11, the high temperature of the heat is rapidly cooled down to realize rapid cooling of the cast ingot mould 11, the high temperature of the heat is fully cooled down rate of the steel ingot is fully cooled by the steel mould 11, and the high temperature of the steel is fully cooled down by the steel mould, and the high temperature is fully cooled down by the steel is fully.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a quick cooling device of vacuum induction furnace ingot room molten metal, its characterized in that includes ingot room (1), centrifugal fan (2), air conditioning air-supply line (3), gas heat exchanger (4) and steam play tuber pipe (5), be provided with ingot mould (11) in ingot room (1), centrifugal fan (2) air outlet is provided with fan outlet duct (21), centrifugal fan (2) air intake is provided with fan intake pipe (22), fan intake pipe (22) are connected with first support (24), centrifugal fan (2) lower extreme is provided with base (23), air conditioning air-supply line (3) are connected through first flange (31) with air conditioning inlet pipe (12), air conditioning air-supply line (3) are linked together through first air valve (32) with fan outlet duct (21);

the air outlet of the gas heat exchanger (4) is provided with a heat exchange air outlet pipe (41), the air inlet of the gas heat exchanger (4) is provided with a heat exchanger air inlet pipe (42), the heat exchange air outlet pipe (41) is communicated with the fan air inlet pipe (22) through a second pneumatic valve (43), two ends of the gas heat exchanger (4) are respectively provided with a water inlet (44) and a water outlet (45), and the gas heat exchanger (4) is fixed above the ingot casting chamber (1) through a second bracket (46).

2. The rapid cooling device for molten metal in a vacuum induction furnace ingot room according to claim 1, wherein the hot gas outlet pipe (5) is connected with a hot gas outlet pipe (13) at the upper end of the ingot room (1) through a second flange (51), and the hot gas outlet pipe (5) is communicated with a heat exchanger air inlet pipe (42) through a third pneumatic valve (52).

3. The rapid cooling device for molten metal in an ingot casting chamber of a vacuum induction furnace according to claim 2, wherein a cold air inlet pipe (12) is arranged on the inner wall of one side of the ingot casting chamber (1).

4. A rapid cooling device for molten metal in a vacuum induction furnace ingot casting chamber according to claim 3, wherein an external gas pipe (14) is arranged on the inner wall of one side of the ingot casting chamber (1) close to the cold air inlet pipe (12).

5. The rapid cooling device for molten metal in a vacuum induction furnace ingot casting chamber according to claim 4, wherein the gas heat exchanger (4) is provided with a plurality of groups of heat exchange mechanisms (47), the heat exchange mechanisms (47) are composed of heat exchange plates (471) and high-speed water pipes (472), and flowing gas (48) flowing at high speed is arranged in the gas heat exchanger (4).

6. The rapid cooling device for molten metal in a vacuum induction furnace ingot room of claim 5, wherein the flowing gas (48) is an inert gas, and the inert gas is argon or helium.