Integrated rapid inert gas filling and automatic adjusting device for gas protection electroslag furnace crystallizer

Abstract

The embodiment of the invention relates to an integrated rapid inert gas filling and automatic adjusting device for a crystallizer of a gas protection electroslag furnace. The crystallizer is arranged on the integrated rapid inert gas filling and automatic adjusting device for the crystallizer of the gas protection electroslag furnace. A smoke cover is arranged at the upper end of the crystallizer; a totally-enclosed space is formed between the crystallizer and the smoke cover; an inert gas quick-filling device is arranged on the side of the crystallizer and the smoke cover; one side of the inert gas quick-filling device is communicated with an inert gas control device; the space formed by the crystallizer and the smoke cover is rapidly filled with inert gas through the inert gas rapid filling device, and the inert gas control device provides the inert gas for the inert gas rapid filling device and automatically controls the flow of the inert gas. The technical problems that gas replacement is carried out on a closed space formed by a crystallizer, an upper protective atmosphere cover and a lower protective atmosphere cover before smelting of a traditional protective atmosphere electroslag furnace, the inflation time lasts for several minutes, the production cycle is seriously occupied, the equipment utilization rate is reduced, and the inflation efficiency is low are solved.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of gas protection electroslag furnace, in particular to a gas protection electroslag furnace crystallizer integrated type rapid inert gas filling and automatic adjusting device, and more particularly to a high-quality special steel smelting scene with high requirements for argon filling efficiency and gas utilization rate. BACKGROUND

[0002] The traditional protective atmosphere electroslag furnace adopts a rough argon filling mode based on the oxygen content above the smoke hood, and the entire closed space formed by the crystallizer and the upper and lower protective atmosphere hoods needs to be replaced with gas before smelting. The gas filling time usually lasts for several minutes, which seriously occupies the production cycle, reduces the equipment utilization rate, and has low gas filling efficiency. The inert gas interface of the traditional device is arranged at the lower smoke hood position, and the upper smoke hood is matched with a smoke dust removal device. During the argon filling process, the entire closed space needs to maintain a slightly positive pressure environment, which causes a large amount of argon gas to be directly sucked and discharged by the dust removal device without forming an effective protective atmosphere in the crystallizer. At the same time, the sealing structure of the upper and lower smoke hoods has defects, which easily causes gas leakage problems, prolongs the replacement cycle of the inert gas in the crystallizer, and significantly increases the consumption of argon gas, thereby significantly increasing the smelting cost.

[0003] In the prior art, a flow regulating system is arranged in the protective cover to optimize gas consumption, but the essence of the overall space replacement is not changed, and the problem of long preparation time still exists. The single argon gas ring gas supply lacks deep integration with the structure of the crystallizer, has insufficient sealing performance and poor gas distribution uniformity, and it is difficult to balance the requirements of rapid gas filling and energy saving. SUMMARY

[0004] The purpose of the embodiment of the present application is to provide a gas protection electroslag furnace crystallizer integrated type rapid inert gas filling and automatic adjusting device with less inert gas filling time, low argon gas consumption and low smelting cost.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the present application designs a gas protection electroslag furnace crystallizer integrated type rapid inert gas filling and automatic adjusting device, which comprises: A crystallizer is arranged on the gas protection electroslag furnace crystallizer integrated type rapid inert gas filling and automatic adjusting device, and the crystallizer is a double-layer water-cooled structure. A smoke hood is arranged at the upper end of the crystallizer, and a full-closed space is formed between the crystallizer and the smoke hood. An inert gas fast-charging device is arranged at the side of the crystallizer and the smoke hood. An inert gas control device is connected to one side of the inert gas fast-charging device. The inert gas fast filling device fills inert gas into the space formed by the crystallizer and the fume hood, and the inert gas control device provides inert gas for the inert gas fast filling device and automatically controls the flow of the inert gas.

[0006] Further, in the gas-protected electroslag furnace crystallizer integrated type fast inert gas filling and automatic adjusting device, the crystallizer is a double-layer water cooling structure. The crystallizer comprises: A crystallizer outer wall is fixed to the outside of the crystallizer. A cooling water cavity is fixed to the inside of the crystallizer outer wall. A crystallizer copper inner wall is fixed to the inside of the cooling water cavity. A bottom water tank is fixed to the bottom of the crystallizer. A water inlet is fixed to the upper end of the crystallizer outer wall. A water outlet is fixed to the upper end of the crystallizer outer wall on one side of the water inlet. An air flow cavity is formed on the bottom side of the crystallizer copper inner wall. Air flow through holes are formed in the vertical direction on the side of the air flow cavity close to the crystallizer inner wall.

[0007] Further, in the gas-protected electroslag furnace crystallizer integrated type fast inert gas filling and automatic adjusting device, the inert gas fast filling device comprises: A first inert gas fast filling device is arranged on the fume hood. A second inert gas fast filling device is arranged on the crystallizer outer wall.

[0008] Further, in the gas-protected electroslag furnace crystallizer integrated type fast inert gas filling and automatic adjusting device, the second inert gas fast filling device comprises: A second fast gas filling upper interface is fixed to the upper side of the crystallizer outer wall. A second fast gas filling lower interface is fixed to the lower end of the crystallizer outer wall and is connected to the air flow cavity. A gas filling pipeline is connected to the second fast gas filling upper interface at one end and is connected to the second fast gas filling lower interface at the other end, and seamlessly adheres to the crystallizer outer wall from top to bottom.

[0009] Further, in the gas-protected electroslag furnace crystallizer integrated type fast inert gas filling and automatic adjusting device, the inert gas control device comprises: an inert gas source, the inert gas source being arranged on the inert gas control device; a gas control panel, the gas control panel being arranged on one side of the inert gas source; an electroslag furnace HMI control system, the electroslag furnace HMI control system being connected to the gas control panel.

[0010] Further, in the gas protection electroslag furnace crystallizer integrated type fast inert gas filling and automatic adjusting device, the inert gas source is stored in the high-pressure gas tank; the high-pressure gas tank is in interface communication with the first inert gas fast filling device and the second inert gas fast filling device of the inert gas fast filling device through the pressure reducing valve.

[0011] Further, in the gas protection electroslag furnace crystallizer integrated type fast inert gas filling and automatic adjusting device, the gas control panel comprises: a first gas inlet pipeline, the inert gas source being communicated with the first inert gas fast filling device through the first gas inlet pipeline; a second gas inlet pipeline, the inert gas source being communicated with the second inert gas fast filling device through the second gas inlet pipeline; an oxygen analysis detector, the oxygen analysis detector being fixed on the gas control panel; one end of the oxygen analysis detector being connected with an oxygen probe, and the other end of the oxygen analysis detector being connected with the electroslag furnace HMI control system, so as to automatically collect and adjust the oxygen content in the furnace.

[0012] Further, in the gas protection electroslag furnace crystallizer integrated type fast inert gas filling and automatic adjusting device, one end of the first gas inlet pipeline is connected with one end of the first flowmeter; one end of the flow controller is connected with the other end of the first flowmeter; the other end of the flow controller is connected with the inert gas source; one end of the first hose is connected with the other end of the first gas inlet pipeline; the other end of the first hose is connected with the first inert gas fast filling device; an IGS adjusting valve is connected with the first gas inlet pipeline on one side of the flow controller, and the IGS adjusting valve is connected with the electroslag furnace HMI control system, so as to realize automatic control of the flow of the inert gas; one end of the second gas inlet pipeline is connected with one end of the second hose; the other end of the second hose is connected with the second inert gas fast filling device; the second flowmeter, the flow adjusting valve and the manual stop valve are sequentially connected with the other end of the second gas inlet pipeline, and finally connected with the inert gas source.

[0013] Further, in the gas protection electroslag furnace crystallizer integrated type fast inert gas filling and automatic adjusting device, the smoke cover comprises: a lower smoke cover, the lower smoke cover being connected with the upper end of the crystallizer; An upper fume cover is connected to the upper end of the lower fume cover; An electrically conductive material rod is arranged through the top of the upper fume cover.

[0014] Further, the gas protection electric slag furnace crystallizer integrated type rapid inert gas filling and automatic adjusting device of the present application is provided with a sealing system on the crystallizer and the upper fume cover; The sealing system comprises: A bottom high-temperature resistant sealing element is fixed between the bottom of the crystallizer and the bottom water tank. An O-shaped sealing ring is fixed between the crystallizer and the lower fume cover. A top dynamic sealing element is fixed between the upper fume cover and the electrically conductive material rod, forming a dynamic seal.

[0015] Compared with the prior art, the embodiment of the present application adopts the gas protection electric slag furnace crystallizer integrated type rapid inert gas filling and automatic adjusting device, which is provided with a crystallizer, a fume cover arranged at the upper end of the crystallizer, a fully closed space formed between the crystallizer and the fume cover, an inert gas rapid filling device arranged at the side of the crystallizer and the fume cover, and an inert gas control device communicated with one side of the inert gas rapid filling device. The inert gas rapid filling device is used to rapidly fill inert gas into the space formed by the crystallizer and the fume cover, and the inert gas control device is used to provide inert gas for the inert gas rapid filling device and automatically control the flow of the inert gas. The advantages of the present application are as follows: the inert gas filling time is extremely shortened, the intelligent flow automatic adjusting of the electric slag furnace HMI control system is combined, the argon consumption is greatly reduced, the smelting cost is significantly reduced, the traditional protection gas atmosphere electric slag furnace adopts a rough filling argon mode based on the oxygen content above the fume cover, the closed space formed by the entire crystallizer and the upper and lower protection atmosphere covers needs to be replaced with gas before smelting, the filling time usually lasts for several minutes, the production cycle is seriously occupied, the equipment utilization rate is reduced, and the filling efficiency is low. The inert gas interface of the traditional device is arranged at the lower fume cover position, and the upper fume cover is matched with a flue gas dust removal device. During the argon filling process, the entire closed space needs to maintain a slightly positive pressure environment, resulting in a large amount of argon not forming an effective protection atmosphere in the crystallizer, i.e., being directly sucked and discharged by the dust removal device. At the same time, the sealing structure of the upper and lower fume covers has defects, and gas leakage problems are prone to occur, which not only prolongs the replacement period of the inert gas in the crystallizer, but also causes the argon consumption to rise sharply, significantly increasing the smelting cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a structural schematic diagram of the present application; Figure 2 FIG. 2 is a front view of the second inert gas rapid filling device of the present application; Figure 3 This is a rear view of the crystallizer of the present invention; Figure 4 for Figure 2 Sectional view AA; Figure 5 For the present invention Figure 1 Enlarged image I; Figure 6 For the present invention Figure 4 Enlarged image II; Figure 7 For the present invention Figure 4 Enlarged image III; Figure 8 For the present invention Figure 1 Enlarged image IV.

[0017] In the diagram: 1-Crystallizer, 11-Crystallizer outer wall, 111-Inlet, 112-Outlet, 12-Cooling water chamber, 13-Crystallizer copper inner wall, 131-Airflow chamber, 132-Airflow hole, 14-Bottom water tank, 141-High-temperature seal, 2-Inert gas fast charging device, 21-First inert gas fast charging device, 22-Second inert gas fast charging device, 221-Second fast charging upper interface, 222-Second fast charging lower interface, 223-Charging pipe, 3-Inert gas control device, 31-Inert gas source, 311-High-pressure gas storage tank, 31 2-Pressure reducing valve, 32-Gas control panel, 321-First inlet pipe, 322-Second inlet pipe, 323-Oxygen analyzer, 33-Electroslag furnace HMI control system, 4-Sealing system, 41-O-ring seal, 42-Dynamic seal, 5-Fog hood, 51-Upper fog hood, 52-Lower fog hood, 511-Conductive material rod, 6-Flow controller, 7-First flow meter, 8-First hose, 9-IGS regulating valve, 10-Manual shut-off valve, 15-Flow regulating valve, 16-Second flow meter, 17-Second hose, 18-Oxygen probe. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the various embodiments of this invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this invention to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0019] The embodiments of the present invention relate to an integrated rapid inert gas charging and automatic adjustment device for a gas-supported electroslag furnace crystallizer, such as... Figure 1 , Figure 2 and Figure 3 As shown, it includes: The crystallizer 1 is arranged on the gas protection electric slag furnace crystallizer integrated type rapid inert gas filling and automatic adjusting device in the embodiment; the crystallizer 1 provides a mold for the electric slag remelting process, so that the molten metal is crystallized and formed therein.

[0020] A smoke hood 5 is arranged at the upper end of the crystallizer 1; a fully closed space is formed between the crystallizer 1 and the smoke hood 5; An inert gas rapid filling device 2 is arranged at the side of the crystallizer 1 and the smoke hood; the inert gas rapid filling device 2 fills inert gas into the closed space formed by the crystallizer 1 and the smoke hood 5.

[0021] An inert gas control device 3 is communicated with one side of the inert gas rapid filling device 2; the inert gas rapid filling device 2 rapidly fills inert gas into the space formed by the crystallizer 1 and the smoke hood 5, and the inert gas control device 3 provides inert gas for the inert gas rapid filling device 2 and automatically controls the flow of the inert gas.

[0022] In the embodiment, the inert gas control device 3 is communicated with one side of the inert gas rapid filling device 2; the inert gas rapid filling device 2 rapidly fills inert gas into the space formed by the crystallizer 1 and the smoke hood 5, and the inert gas control device 3 provides inert gas for the inert gas rapid filling device 2 and automatically controls the flow of the inert gas, which solves the technical problems of the traditional protective atmosphere electric slag furnace, such as the rough filling mode based on the oxygen content above the smoke hood, the need for gas replacement of the closed space formed by the entire crystallizer and the upper and lower protective atmosphere hoods before smelting, the long filling time of usually several minutes, the serious occupation of the production cycle, the low equipment utilization rate, the low filling efficiency, the inert gas interface of the traditional device arranged at the lower smoke hood position, the smoke gas dust removal device matched with the upper smoke hood, the need for maintaining a slightly positive pressure environment in the entire closed space during the argon filling process, the large amount of argon gas not forming an effective protective atmosphere in the crystallizer, the direct suction and discharge of the argon gas by the dust removal device, the defects of the sealing structure of the upper and lower smoke hoods, the gas leakage problem, the extension of the replacement cycle of the inert gas in the crystallizer, the significant increase of the argon gas consumption, and the significant increase of the smelting cost.

[0023] In order to achieve the above technical effects, as shown in Figure 1 The crystallizer 1 is a double-layer water-cooled structure, which is helpful to control the crystallization speed and quality.

[0024] The crystallizer 1 comprises: The crystallizer outer wall 11 is fixed outside the crystallizer 1, which serves as an external support structure of the crystallizer 1, protects the internal components, and enhances the stability of the crystallizer 1.

[0025] A cooling water cavity 12 is fixed on the inner side of the outer wall 11 of the crystallizer, which takes away the heat generated during the crystallization process by circulating cooling water, cools the crystallizer 1, and enables the crystallization process to proceed stably.

[0026] A copper inner wall 13 of the crystallizer is fixed on the inner side of the cooling water cavity 12, which directly contacts the molten metal, quickly transfers heat to the cooling water by using the good thermal conductivity of copper, promotes metal crystallization, and protects other components from being eroded by high-temperature metal.

[0027] A bottom water tank 14 is fixed at the bottom of the crystallizer 1, which stores and supplies cooling water.

[0028] A water inlet 111 is fixed at the upper end of the outer wall 11 of the crystallizer; A water outlet 112 is fixed at the upper end of the outer wall 11 of the crystallizer on one side of the water inlet 111; the water inlet 111 and the water outlet 112 are respectively used for inflow and outflow of cooling water, forming a cooling water circulation channel to maintain the dynamic flow of water in the cooling water cavity.

[0029] An airflow cavity 131 is provided on the bottom side of the copper inner wall 13 of the crystallizer; Airflow through holes 132 are provided in the vertical direction on one side of the airflow cavity 131 close to the inner wall 13 of the crystallizer; the airflow cavity 131 and the airflow through holes 132 guide the flow path of the inert gas in the crystallizer 1, so that the inert gas can be uniformly distributed to the internal space of the crystallizer 1, effectively isolating oxygen and preventing metal oxidation.

[0030] In order to achieve the above technical effects, as shown in the drawings, the inert gas fast charging device 2 comprises: Figure 1 A first inert gas fast charging device 21 is arranged on the smoke hood 5; A second inert gas fast charging device 22 is arranged on the outer wall 11 of the crystallizer; the first inert gas fast charging device 21 and the second inert gas fast charging device 22 quickly fill inert gas into the sealed space formed by the crystallizer 1 and the smoke hood 5, ensuring that the required inert gas atmosphere is reached in a short time, and protecting the metal from being oxidized during the smelting process.

[0031] In order to achieve the above technical effects, as shown in the drawings, the second inert gas fast charging device 22 comprises: Figure 1 A second gas charging quick upper interface 221 is fixed on the upper side of the outer wall 11 of the crystallizer; A second gas charging quick lower interface 222 is fixed at the lower end of the outer wall 11 of the crystallizer and is communicated with the airflow cavity 131; the second gas charging quick upper interface 221 and the second gas charging quick lower interface 222 serve as the connection interfaces of the second inert gas fast charging device 22 with the inert gas source 31 and the airflow cavity inside the crystallizer 1, and quickly input inert gas. ​​

[0032] One end of the gas charging pipeline 223 is connected to the second gas charging quick upper interface 221, the other end of the gas charging pipeline 223 is connected to the second gas charging quick lower interface 222, and is seamlessly attached along the outer wall 11 of the crystallizer from top to bottom, and the gas charging pipeline 223 is used for conveying inert gas.

[0033] In order to achieve the above technical effects, as shown in Figure 1 The inert gas control device 3 comprises: An inert gas source 31 is arranged on the inert gas control device 3; the inert gas source 31 provides inert gas.

[0034] A gas control panel 32 is arranged on one side of the inert gas source 31; the gas control panel 32 detects the oxygen content in real time and feeds back data to an electroslag furnace HMI control system 33 so as to automatically adjust the oxygen content.

[0035] The electroslag furnace HMI control system 33 is connected to the gas control panel 32, the electroslag furnace HMI control system 33 automatically controls and monitors the gas-protected electroslag furnace crystallizer integrated type quick inert gas charging and automatic adjusting device, and automatically adjusts parameters such as inert gas flow according to the data of the oxygen analysis detector.

[0036] In order to achieve the above technical effects, as shown in Figure 1 The inert gas source 31 is stored in a high-pressure gas storage tank 311; the high-pressure gas storage tank 311 is in interface communication with the first inert gas quick charging device 21 and the second inert gas quick charging device 22 of the inert gas quick charging device 2 through a pressure reducing valve 312, the high-pressure gas storage tank 311 stores high-pressure inert gas, stably supplies inert gas for the gas-protected electroslag furnace crystallizer integrated type quick inert gas charging and automatic adjusting device, and the pressure reducing valve 312 reduces the high-pressure inert gas in the high-pressure gas storage tank 311 to a suitable working pressure.

[0037] In order to achieve the above technical effects, as shown in Figure 1 The gas control panel 32 comprises: The inert gas source 31 is in communication with the first inert gas quick charging device 21 through a first gas inlet pipeline 321; The inert gas source 31 is in communication with the second inert gas quick charging device 22 through a second gas inlet pipeline 322; the first gas inlet pipeline 321 and the second gas inlet pipeline 322 are conveying channels of the inert gas source 31.

[0038] The oxygen analyzer 323 is fixed on the gas control panel 32; one end of the oxygen analyzer 323 is connected with the oxygen probe 18, and the other end of the oxygen analyzer 323 is connected with the ESR HMI control system 33, so as to automatically collect and adjust the oxygen content in the furnace. The oxygen probe 18 detects the oxygen content in real time, and transmits the signal to the oxygen analyzer 323; the oxygen analyzer 323 detects the oxygen content in the closed space in real time, and feeds back the data to the ESR HMI control system 33, so as to automatically adjust the oxygen content.

[0039] In order to achieve the above technical effects, as shown in FIG. 1, Figure 1 one end of the first flowmeter 7 is connected with one end of the first inlet pipeline 321; one end of the flow controller 6 is connected with the other end of the first flowmeter 7; the other end of the flow controller 6 is connected with the inert gas source 31; one end of the first hose 8 is connected with the other end of the first inlet pipeline 321; the other end of the first hose 8 is connected with the first inert gas fast-filling device 21; the IGS adjusting valve 9 is connected with the first inlet pipeline 321 on one side of the flow controller 6, and the IGS adjusting valve 9 is connected with the ESR HMI control system 33, so as to realize automatic control of the flow of the inert gas; one end of the second hose 17 is connected with one end of the second inlet pipeline 322; the other end of the second hose 17 is connected with the second inert gas fast-filling device 22; the second flowmeter 16, the flow adjusting valve 15 and the manual stop valve 10 are connected with the other end of the second inlet pipeline 322 in sequence, and finally connected with the inert gas source 31. The first flowmeter 7 measures the flow of the inert gas in the first inlet pipeline 321, so as to provide data support for the flow control; the flow controller 6 automatically adjusts the flow of the inert gas according to the set parameters, so as to supply the inert gas; the second flowmeter 16 measures the flow of the inert gas in the second inlet pipeline 322, so as to provide data support for the flow control; the flow adjusting valve 15 automatically adjusts the flow of the inert gas according to the set parameters, so as to supply the inert gas; the manual stop valve 10 is used for manually cutting off or connecting the inert gas flow in the second inlet pipeline 322; the first hose 8 and the second hose 17 both play the role of flexible connection and conveying the inert gas.

[0040] In order to achieve the above technical effects, as shown in FIG. 1, Figure 1 The smoke cover 5 comprises: The lower smoke cover 52 is connected with the upper end of the crystallizer 1; The upper smoke cover 51 is connected with the upper end of the lower smoke cover 52; the upper smoke cover 51 and the lower smoke cover 52 cooperate with the crystallizer 1 to form a fully closed space, so as to prevent the smoke and harmful gas generated in the ESR remelting process from leaking out, and at the same time provide a closed environment for inert gas filling.

[0041] The conductive material rod 511 is arranged through the top of the upper smoke cover 51, and is used for conveying current to the ESR furnace, so as to melt the metal.

[0042] To achieve the above-mentioned technical effects, such as ​ As shown, a sealing system 4 is provided on the crystallizer 1 and the fume hood 5; Sealing system 4 includes: A bottom high-temperature resistant seal 141 is fixed between the bottom water tank 14 and the bottom of the crystallizer 1 to prevent cooling water leakage.

[0043] An O-ring 41 is fixed between the crystallizer 1 and the lower fume hood 52. The O-ring 41 ensures the airtightness between the crystallizer 1 and the lower fume hood 52, preventing gas leakage and the entry of outside air.

[0044] A top dynamic seal 42 is fixed between the upper smoke hood 51 and the conductive material rod 511 to form a dynamic seal. The top dynamic seal 42 can adapt to the movement of the conductive material rod 511 while preventing gas leakage and maintaining the airtightness of the enclosed space.

[0045] Taking a domestic user as an example, the equipment is a 5-ton protective atmosphere electroslag furnace, using argon as the inert gas. During the electroslag furnace smelting preparation stage, a high-temperature resistant sealing component 141 is placed at the bottom of the crystallizer 1. After the bottom water tank 14 and the crystallizer 1 are installed, they are placed in the smelting station. The lower fume hood 52 is hoisted and placed on the crystallizer 1. After the electroslag furnace head rotates to the smelting position, the furnace head is lowered, the upper and lower furnace legs are connected, the upper fume hood 51 is lowered and placed on the lower fume hood 52, the inert gas source 31 (argon) is turned on, the pressure reducing valve 312 controls the pressure at 0.35MPa, the manual shut-off valve 10 is opened, and the argon gas is automatically regulated by the flow regulating valve 15 to quickly pass through the second gas inlet pipe 322 at a flow rate of 5000LPM-600LPM, through the gas filling pipe 223, the gas flow chamber 131, and the gas flow channel. 132 flows into the space combined with the crystallizer 1 and the bottom water tank 14, quickly displacing the air inside the crystallizer 1. Simultaneously, another stream of argon gas is supplied through the first inlet pipe 321 via the flow controller 6 and the IGS regulating valve 9 to the first inert gas fast charging device 21. Based on the oxygen probe 18 inserted on the lower fume hood 52, if the oxygen content is detected to be below 200 ppm, the manual shut-off valve 10 is closed, maintaining the first inert gas fast charging device 21 for argon supply. During the electroslag furnace arc ignition smelting process, the argon gas flow rate is automatically adjusted through the first inlet pipe 321 according to the oxygen content inside the furnace, reducing the argon gas charging time before arc ignition from over 20 minutes to less than 10 minutes. Taking a 5-ton electroslag furnace as an example, with two furnace runs per day, and calculating a saving of 10 minutes per run: Steel production profit: 20 minutes can be saved a day, which can melt about 180 kg of steel, daily profit increase = 0.18 tons x 2000 yuan / ton profit = 360 yuan / day, through this improvement, the equipment in the same industry can increase monthly profit (according to 30 days) = 360 yuan*30 = 10800 yuan / month, annual profit increase (according to 300 days of production) = 360 yuan*300 = 108,000 yuan / year.

[0046] Argon gas saving cost: argon gas average flow 200LPM, 10min single furnace argon gas saving = 10min*200LPM = 2000L / furnace, daily argon gas saving = 2furnace*2000L / furnace = 4000L / day, according to 40L bottle argon gas price 200 yuan / bottle, argon gas unit cost = 300 yuan / bottle / 6000L = 0.05 yuan / L, annual saving cost (according to 300 days of production) = 4000L*0.05 yuan / L*300 = 60,000 yuan / year.

[0047] The comprehensive single device annual profit increase is 168,000 yuan. The present application can greatly reduce the argon consumption in the production process and significantly reduce the smelting cost.

[0048] Those skilled in the art can understand that the above embodiments are specific examples for implementing the present application, and in actual application, various changes can be made in form and details without departing from the spirit and scope of the present application.

Claims

1. An integrated rapid inert gas charging and automatic adjustment device for a gas-supported electroslag furnace crystallizer, characterized in that, include: The crystallizer is installed on the integrated rapid inert gas charging and automatic adjustment device of the gas-supported electroslag furnace crystallizer; A smoke hood is installed at the upper end of the crystallizer; a fully enclosed space is formed between the crystallizer and the smoke hood; An inert gas fast charging device is provided on the side of the crystallizer and the fume hood; An inert gas control device is connected to one side of the inert gas fast charging device; The inert gas fast charging device rapidly fills the space formed by the crystallizer and the smoke hood with inert gas, and the inert gas control device provides inert gas to the inert gas fast charging device and automatically controls the flow rate of the inert gas.

2. The integrated rapid inert gas charging and automatic adjustment device for a gas-supported electroslag furnace crystallizer according to claim 1, characterized in that, The crystallizer has a double-layer water-cooled structure; The crystallizer includes: The outer wall of the crystallizer is fixed to the outside of the crystallizer. A cooling water chamber is fixed on the inner side of the outer wall of the crystallizer; The copper inner wall of the crystallizer is fixed inside the cooling water cavity; A bottom water tank is fixed at the bottom of the crystallizer. The water inlet is fixed at the upper end of the outer wall of the crystallizer; The water outlet is fixed on one side of the water inlet and at the upper end of the outer wall of the crystallizer; An airflow cavity is formed on the bottom side of the inner copper wall of the crystallizer; An air passage is formed in the vertical direction on the side of the airflow cavity near the inner wall of the crystallizer.

3. The integrated rapid inert gas charging and automatic adjustment device for the gas-supported electroslag furnace crystallizer according to claim 1, characterized in that, The inert gas fast charging device includes: A first inert gas fast charging device is installed on the smoke hood; The second inert gas fast charging device is installed on the outer wall of the crystallizer.

4. The integrated rapid inert gas charging and automatic adjustment device for the gas-supported electroslag furnace crystallizer according to claim 3, characterized in that, The second inert gas fast charging device includes: The second quick-connect air inlet is fixed on the upper side of the outer wall of the crystallizer; The second rapid inflation port is fixed to the lower end of the outer wall of the crystallizer and connected to the airflow cavity. An inflation pipe is provided, with one end connected to the second quick inflation upper interface and the other end connected to the second quick inflation lower interface, and the pipe is seamlessly attached to the outer wall of the crystallizer from top to bottom.

5. The integrated rapid inert gas charging and automatic adjustment device for the gas-supported electroslag furnace crystallizer according to claim 1, characterized in that, The inert gas control device includes: An inert gas source is provided on the inert gas control device; A gas control panel is installed on one side of the inert gas source; An electroslag furnace HMI control system is connected to the gas control panel.

6. The integrated rapid inert gas charging and automatic adjustment device for the gas-supported electroslag furnace crystallizer according to claim 5, characterized in that, The inert gas source is stored in the high-pressure gas storage tank; the high-pressure gas storage tank is connected to the interfaces of the first and second inert gas fast charging devices of the inert gas fast charging device through pressure reducing valves.

7. The integrated rapid inert gas charging and automatic adjustment device for the gas-supported electroslag furnace crystallizer according to claim 5, characterized in that, The gas control panel includes: The first air intake pipe connects the inert gas source to the first inert gas fast charging device. The second air intake pipe connects the inert gas source to the second inert gas fast charging device. An oxygen analyzer is fixed on the gas control panel; one end of the oxygen analyzer is connected to an oxygen probe, and the other end is connected to the electroslag furnace HMI control system to automatically collect and adjust the oxygen content in the furnace.

8. The integrated rapid inert gas charging and automatic adjustment device for the gas-supported electroslag furnace crystallizer according to claim 7, characterized in that, One end of the first flow meter is connected to one end of the first air inlet pipe; one end of the flow controller is connected to the other end of the first flow meter; the other end of the flow controller is connected to the inert gas source; one end of the first hose is connected to the other end of the first air inlet pipe; the first inert gas fast charging device is connected to the other end of the first hose; an IGS regulating valve is connected to one side of the flow controller and on the first air inlet pipe, and the IGS regulating valve is connected to the electroslag furnace HMI control system to realize automatic control of the inert gas flow rate; one end of the second hose is connected to one end of the second air inlet pipe; the other end of the second hose is connected to the second inert gas fast charging device; a second flow meter, a flow regulating valve, and a manual shut-off valve are sequentially connected to the other end of the second air inlet pipe, and finally connected to the inert gas source.

9. The integrated rapid inert gas charging and automatic adjustment device for the gas-supported electroslag furnace crystallizer according to claim 1, characterized in that, The smoke hood includes: A lower fume hood is connected to the upper end of the crystallizer; An upper smoke hood is connected to the upper end of the lower smoke hood; A conductive rod is provided through the top of the upper smoke hood.

10. The integrated rapid inert gas charging and automatic adjustment device for the gas-supported electroslag furnace crystallizer according to claim 1, characterized in that, A sealing system is provided on the crystallizer and the fume hood; The sealing system includes: A high-temperature resistant bottom seal is fixed between the bottom water tank and the bottom of the crystallizer. An O-ring is used to fix the O-ring between the crystallizer and the lower smoke hood. A top dynamic seal is fixed between the upper smoke hood and the conductive material rod to form a dynamic seal.

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