CN210104002U - Cooling device for RH refining furnace insert tube - Google Patents
Cooling device for RH refining furnace insert tube Download PDFInfo
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- CN210104002U CN210104002U CN201920757283.2U CN201920757283U CN210104002U CN 210104002 U CN210104002 U CN 210104002U CN 201920757283 U CN201920757283 U CN 201920757283U CN 210104002 U CN210104002 U CN 210104002U
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Abstract
The utility model discloses a cooling device for RH refining furnace insert tube, including the insert tube, the inner wall position of insert tube is equipped with the firebrick layer, and the position cladding of the outer wall top of insert tube has the cooling chamber, and the cooling chamber is the cylindric structure that hollow square board system formed, and the cooling chamber welds on the insert tube outer wall, and the outer wall position of cooling chamber installs cold water inlet tube and hot water outlet pipe, and cold water inlet tube and hot water outlet pipe are linked together with the inner chamber of cooling chamber respectively, the utility model discloses alleviate insert tube tubular metal steel construction reddening, deformation condition greatly, improved RH vacuum furnace insert tube's life; the service life of the insert tube is synchronous with the furnace bottom, the use efficiency of the vacuum furnace is improved, and the requirement of production rhythm is ensured; unnecessary overhaul and rush repair caused by red deformation of the neck of the insertion tube are reduced, and the labor cost, the production cost and the material cost are greatly saved.
Description
Technical Field
The utility model belongs to the technical field of RH refining furnace insert tube cooling, concretely relates to a cooling device for RH refining furnace insert tube.
Background
At present, most of steel mills in China adopt an RH refining method. The RH refining method is totally called RH vacuum cycle degassing refining method, and was successfully developed by Luer Steel company and Helas company belonging to the German Tissen company in 1956.
Before molten steel treatment, the insert pipe is immersed into molten steel of a ladle to be treated, two insert pipes communicated with a vacuum furnace are arranged, one insert pipe is an ascending pipe, the other insert pipe is a descending pipe, argon is continuously blown into the molten steel from the ascending pipe, a higher static pressure difference is generated relative to the descending pipe without argon blowing, the molten steel is immersed into the descending pipe from the ascending pipe and flows to the lower part of the vacuum furnace, then flows into the molten steel of the ladle, and the process is repeated continuously and circularly. In a vacuum state, argon, hydrogen, carbon monoxide and other gases in molten steel flowing through the vacuum chamber are pumped away in the molten steel circulation process. Meanwhile, the molten steel also carries out a series of metallurgical reactions, and the molten steel is purified by circularly degassing and refining.
The existing RH refining furnace directly attaches refractory materials to the surface of a steel structure of an insert pipe, and the insert pipe is immersed in molten steel for treatment when in use, and the influence of high temperature on the insert pipe is relieved mainly by depending on the refractory performance of the refractory materials, so that the aim of meeting the production requirement in the vacuum treatment process is fulfilled. In the existing design, only the flowing condition of molten steel in a vacuum chamber is considered, the cooling of a vacuum chamber body is not considered, and generally, the steel structure of an insertion pipe is protected only by the heat insulation effect of a refractory body. The current general design has the following problems in use: 1. when the vacuum furnace insert tube is used, the temperature is high, so that the metal shell at the neck of the insert tube is red, and the structure of the insert tube is deformed; 2. the shell is easy to deform due to the red and high-temperature action of the steel structure, so that the deformation, displacement and even abnormal erosion of the internal refractory structure are caused; 3. because the shell deforms, the insertion tube cannot be used continuously, the use times of the insertion tube are reduced, and the whole service life of the RH furnace is directly influenced.
Disclosure of Invention
The utility model discloses a solve above-mentioned technical problem, provide a cooling device for RH refining furnace insert tube, can alleviate the red, the condition of deformation of insert tube metal steel construction, be favorable to prolonging the life of RH vacuum refining furnace insert tube.
The utility model adopts the technical proposal that: the utility model provides a cooling device for RH refining furnace insert tube, including the insert tube, the inner wall position of insert tube is equipped with the firebrick layer, the outer wall top position cladding of insert tube has the cooling chamber, the cylindric structure that the cooling chamber formed for the square board system of cavity is rolled up, the cooling chamber welding is on the insert tube outer wall, cold water inlet tube and hot water outlet pipe are installed to the outer wall position of cooling chamber, cold water inlet tube is linked together with the inner chamber of cooling chamber respectively with the hot water outlet pipe, cold water inlet tube and hot water outlet pipe set up the square board both ends position of cavity after the cooling chamber expandes respectively.
And a refractory castable layer is arranged on the outer wall of the cooling chamber.
A water flow partition plate is arranged inside the cooling chamber.
A plurality of water flow partition plates are arranged in the cooling chamber, and are distributed in the cooling chamber in a vertically staggered mode.
When the cooling device works, a cold water inlet pipe is connected with a water supply pipeline while molten steel is processed, and cold water is injected into a cooling chamber from the water supply pipe through the cold water inlet pipe; and then the inserting pipe is immersed in molten steel, the cold water inlet pipe and the hot water outlet pipe are both arranged above the liquid level of the molten steel, the inserting pipe can be cooled when cold water flows into the cooling chamber, the cold water entering the cooling chamber after cooling is changed into hot water to be led out from the hot water outlet pipe, and the cooling of the inserting pipe is completed.
A cooling chamber is wrapped above the outer wall of the insertion pipe, the cooling chamber is of a cylindrical structure formed by rolling a hollow square plate, and the cooling chamber is welded on the outer wall of the insertion pipe; the purpose of this is: the cooling chamber is welded to the insert pipe in order to improve the efficiency of heat conduction and the cooling speed.
A cold water inlet pipe and a hot water outlet pipe are arranged on the outer wall of the cooling chamber, the cold water inlet pipe and the hot water outlet pipe are respectively communicated with the inner cavity of the cooling chamber, and the cold water inlet pipe and the hot water outlet pipe are respectively arranged at the two ends of the expanded hollow square plate of the cooling chamber; the purpose of this is: the cold water inlet tube is used for connecting an external water supply pipeline and leading cold water into the cooling chamber, the cold water circulates in the cooling chamber and exchanges heat with the outer wall of the insertion tube, the cold water is led out from the hot water outlet tube at the other end after the temperature of the cold water rises, cooling work is completed, the cold water inlet tube and the hot water outlet tube are respectively arranged at two ends of the cooling chamber so as to enable the cold water to be fully contacted with the heat source on the outer wall of the insertion tube, and cooling efficiency is improved.
The utility model has the advantages that:
1. the red and deformation conditions of the metal steel structure of the insertion tube are greatly relieved, and the service life of the insertion tube of the RH vacuum furnace is prolonged;
2. the service life of the insert tube is synchronous with the furnace bottom, the use efficiency of the vacuum furnace is improved, and the requirement of production rhythm is ensured;
3. unnecessary overhaul and rush repair caused by red deformation of the neck of the insertion tube are reduced, and the labor cost, the production cost and the material cost are greatly saved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a transverse sectional view of the present invention;
FIG. 3 is a perspective view of the cooling chamber of the present invention;
fig. 4 is a water flow state diagram of the cooling chamber in the expanded state according to the first embodiment of the present invention;
fig. 5 is a water flow state diagram of the cooling chamber in the expanded state according to the second embodiment of the present invention;
fig. 6 is a water flow state diagram of a cooling chamber in a third embodiment of the present invention in an expanded state.
The labels in the figure are: 1. an insertion tube; 2. a cooling chamber; 3. a cold water inlet pipe; 4. a hot water outlet pipe; 5. a refractory castable layer; 6. a water flow baffle; 7. and (5) a refractory brick layer.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
The first embodiment,
As shown in figures 1-3, a cooling device for RH refining furnace insert tube, including insert tube 1, the inner wall position of insert tube 1 is equipped with firebrick layer 7, the outer wall top position cladding of insert tube 1 has cooling chamber 2, cooling chamber 2 is the cylindric structure that the square board system of cavity formed, cooling chamber 2 welds on insert tube 1 outer wall, cold water inlet tube 3 and hot water outlet pipe 4 are installed to the outer wall position of cooling chamber 2, cold water inlet tube 3 is linked together with the inner chamber of cooling chamber 2 with hot water outlet pipe 4 respectively, cold water inlet tube 3 and hot water outlet pipe 4 set up the square board both ends position of cavity after cooling chamber 2 expandes respectively.
The outer wall of the cooling chamber 2 is provided with a fireproof casting material layer 5, so that the arrangement is to prevent an operator from being directly contacted with the cooling chamber 2 to cause scalding, and the effect of safety protection is achieved.
When the cooling device works, the cold water inlet pipe 3 is connected with a water supply pipeline while molten steel is processed, and cold water is injected into the cooling chamber 2 from the water supply pipe through the cold water inlet pipe 3; then the inserting pipe 1 is immersed in molten steel, the cold water inlet pipe 3 and the hot water outlet pipe 4 are both arranged above the liquid level of the molten steel, the inserting pipe 1 can be cooled by cold water flowing in the cooling chamber 2, and the cold water entering the cooling chamber 2 after cooling is changed into hot water which is led out from the hot water outlet pipe 4, so that the cooling of the inserting pipe 1 is completed; as shown in fig. 4, a long water flow channel is formed in the cooling chamber 2, cold water enters the cooling chamber 2 through the cold water inlet pipe 3 and then circulates in the cooling chamber 2, the cold water chamber and the insertion pipe 1 are both made of metal, the cold water flowing in the cooling chamber 2 to relieve the bowels can take away heat of the insertion pipe 1, so that the temperature of the insertion pipe 1 is rapidly reduced, and cooled hot water finally flows out from the hot water outlet pipe 4.
Example II,
The present embodiment is different from the first embodiment only in that: inside rivers baffle 6 that is equipped with of cooling chamber 2, as shown in fig. 5, the welding of rivers baffle 6 is at the top surface of cooling chamber 2, and two side sealing connection of rivers baffle 6 are on the inner wall of cooling chamber 2, leave the rivers passageway between the ground of bottom and cooling chamber 2, make and form a recessed formula arc rivers passageway in the cooling chamber 2, cold water gets into behind the cooling chamber 2, just can flow in cooling chamber 2 along recessed formula arc rivers passageway, take away the heat of intubate 1, make it cool off rapidly, hot water rethread hot water outlet pipe 4 after the cooling flows.
Example III,
This embodiment differs from the two embodiments described above only in that: a plurality of water flow partition plates 6 are arranged in the cooling chamber 2, the water flow partition plates 6 are distributed in the cooling chamber 2 at equal intervals in a vertically staggered mode, the water flow partition plates 6 positioned above the cooling chamber 2 are fixedly arranged on the top wall of the cooling chamber 2, two side edges of each water flow partition plate are hermetically connected with the inner wall of the cooling chamber 2, and a water flow channel is reserved below each water flow partition plate; the water flow partition plate 6 positioned below the cooling chamber 2 is fixedly arranged on the bottom plate of the cooling chamber 2, two side edges of the water flow partition plate are hermetically connected with the inner wall of the cooling chamber 2, and a water flow channel is reserved above the water flow partition plate, when the water flow partition plate works, as shown in fig. 6, a wave-shaped water flow channel is formed in the cooling chamber 2, cold water can flow in the cooling chamber 2 along the wave-shaped water flow channel after entering the cooling chamber 2, can pass through the whole area of the insertion pipe 1, takes away the heat of the insertion pipe 1, and is rapidly cooled, and the cooled hot water flows out through the hot water outlet pipe 4.
Claims (4)
1. The utility model provides a cooling device for RH refining furnace insert tube which characterized in that: including the insert tube, the inner wall position of insert tube is equipped with the firebrick layer, the outer wall top position cladding of insert tube has the cooling chamber, the cylindric structure that the cooling chamber formed for the square board system of cavity system, the cooling chamber welding is on the insert tube outer wall, cold water inlet tube and hot water outlet pipe are installed to the outer wall position of cooling chamber, cold water inlet tube and hot water outlet pipe are linked together with the inner chamber of cooling chamber respectively, cold water inlet tube and hot water outlet pipe set up the square board both ends position of cavity after the cooling chamber expandes respectively.
2. The cooling device for the RH refining furnace insert tube of claim 1, wherein: the outer wall of the cooling chamber is provided with a refractory castable layer.
3. The cooling device for the RH refining furnace insert tube of claim 1, wherein: a water flow partition plate is arranged in the cooling chamber.
4. The cooling device for the RH refining furnace insert tube of claim 1, wherein: a plurality of water flow partition plates are arranged in the cooling chamber, and are distributed in the cooling chamber in a vertically staggered mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920757283.2U CN210104002U (en) | 2019-05-24 | 2019-05-24 | Cooling device for RH refining furnace insert tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920757283.2U CN210104002U (en) | 2019-05-24 | 2019-05-24 | Cooling device for RH refining furnace insert tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210104002U true CN210104002U (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920757283.2U Active CN210104002U (en) | 2019-05-24 | 2019-05-24 | Cooling device for RH refining furnace insert tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210104002U (en) |
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2019
- 2019-05-24 CN CN201920757283.2U patent/CN210104002U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210129 Address after: 471322 Baisha Town Industrial Agglomeration Area, Yichuan County, Luoyang City, Henan Province Patentee after: Luoyang Lier Functional Materials Co.,Ltd. Address before: 471000 Luolong science and Technology Park, Luoyang hi tech Industrial Development Zone, Henan Province Patentee before: LUOYANG LIER REFRACTORY MATERIAL Co.,Ltd. |
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| TR01 | Transfer of patent right |