Titanium sponge passage electromagnetic heater

Abstract

The utility model relates to the technical field of titanium sponge smelting, in particular to a titanium sponge passage electromagnetic heater. The titanium sponge passage electromagnetic heater is connected between the reaction tank and the cooling tank and comprises vertical pipes, a transverse pipe and a reducer union, the two ends of the transverse pipe are connected with the two vertical pipes respectively, the inner side of the reducer union is provided with a reducer opening which is gradually enlarged from the top to the bottom, the vertical pipes are connected with the reducer union, and pipeline outlets of the vertical pipes are communicated with the top of the reducer opening. The outer side of the reducing joint is connected with an upper cover plate of the reaction tank or the cooling tank, and the bottom of the reducing opening is communicated with the interior of the reaction tank or the cooling tank. The vertical pipe of the heater is in transition connection with the reaction tank through the reducer union, so that the problem of cracking of a welded junction between the vertical pipe of the heater and the reaction tank is solved; the outlet area of the outlet pipeline of the vertical pipe passage is increased through the reducer union, and the problem of air condensation blockage at the outlet of the vertical pipe passage and the upper end of the cooling tank is solved.

Description

Technical Field

[0001] This utility model relates to the field of sponge titanium smelting technology, and in particular to a sponge titanium passage electromagnetic heater. Background Technology

[0002] The current smelting process for novel sponge titanium incorporates a connecting passage between the reaction vessel and the cooling vessel, allowing reduction and distillation to be completed in a single operation. Therefore, the passage device is a critical piece of equipment. The passage device needs to operate normally at temperatures above 800℃. Current heating methods employ electromagnetic heating, utilizing the principle of electromagnetic induction. A high-frequency alternating current is passed into a coil wound around the passage tube, generating an alternating magnetic field. The magnetic lines of force cut through the metal passage tube, generating eddy currents. These eddy currents collide, rapidly heating the passage tube. The heating passage is composed of welded vertical and horizontal pipes, with the vertical pipes welded to the furnace cover bottom plate of both the reaction vessel and the cooling vessel. After welding, a metal coil is wound around the outer wall of the pipe, and a 1250℃ heat insulation device is installed around the coil, protected by a 304 stainless steel casing.

[0003] Existing corridor heaters have the following technical problems:

[0004] 1) The vertical pipe of the aisle heater is welded to the bottom plate of the furnace cover of the reaction tank and the cooling tank, which causes an excessive temperature difference between the upper and lower parts of the reaction tank and the cooling tank. Due to the thermal expansion and contraction of metal materials, the weld between the vertical pipe and the bottom plate of the furnace cover often cracks. The temperature difference not only affects the normal operation of production, but also reduces the reliability of the equipment, thus increasing the cost.

[0005] 2) Gaseous sponge titanium is formed in the high-temperature reaction vessel. The cool water sprayed in the passage and outside the cooling tank causes the gaseous sponge titanium to cool down rapidly. Therefore, it is easy for gas to condense at the passage outlet and the top of the cooling tank, which can lead to blockage. Utility Model Content

[0006] This invention provides a sponge titanium passageway electromagnetic heater, which aims to solve the technical problems existing in current passageway heaters.

[0007] This utility model provides a titanium sponge channel electromagnetic heater, which is connected between a reaction tank and a cooling tank. It includes a vertical pipe, a horizontal pipe, and a reducing joint. The two ends of the horizontal pipe are respectively connected to two vertical pipes. The inner side of the reducing joint is provided with a reducing port that gradually widens from the top to the bottom. The vertical pipe is connected to the reducing joint, and the pipe outlet of the vertical pipe is connected to the top of the reducing port. The outer side of the reducing joint is connected to the upper cover plate of the reaction tank or cooling tank, and the bottom of the reducing port is connected to the interior of the reaction tank or cooling tank.

[0008] As a further improvement of this utility model, the reducing joint includes an inner cover plate, an outer cover plate, and a joint base plate. The inner cover plate is a cone-shaped structure that gradually expands from the top to the bottom. The outer cover plate is disposed outside the inner cover plate. The joint base plate is connected to the bottom of the inner cover plate and the bottom of the outer cover plate respectively. The top of the outer cover plate is connected to the vertical pipe. The outer cover plate is connected to the top cover plate of the reaction vessel or cooling vessel.

[0009] As a further improvement of this utility model, the sponge titanium passageway electromagnetic heater also includes an electromagnetic induction coil, which is wound around the inner cover plate.

[0010] As a further improvement of this utility model, the reducing joint also includes a joint flange, the outer cover plate and the joint flange are welded together, and the joint flange is welded to the upper cover plate of the reaction vessel or cooling vessel.

[0011] As a further improvement of this utility model, the sponge titanium passageway electromagnetic heater also includes an electromagnetic induction coil, and the electromagnetic induction coil is wound around the outside of both the vertical tube and the horizontal tube.

[0012] As a further improvement of this utility model, the sponge titanium passageway electromagnetic heater also includes thermal insulation cotton, which is wrapped around the outside of the vertical and horizontal pipes.

[0013] As a further improvement of this utility model, the sponge titanium passageway electromagnetic heater also includes an outer protective cover, which is fitted over the outside of the vertical pipe and the horizontal pipe, and forms a heat-insulating chamber between the outer protective cover and the vertical pipe and the horizontal pipe, and the heat-insulating cotton is filled in the heat-insulating chamber.

[0014] As a further improvement of this utility model, the sponge titanium passageway electromagnetic heater also includes a temperature sensor, and the vertical pipe, horizontal pipe and reducing joint are all connected to temperature sensors.

[0015] As a further improvement of this utility model, the horizontal pipe is composed of two sub-horizontal pipes, each of which is connected to a vertical pipe. The end of each sub-horizontal pipe is provided with a horizontal pipe flange, and the pipe ends of the two sub-horizontal pipes are joined together and fixed by the horizontal pipe flange.

[0016] As a further improvement of this utility model, the sponge titanium passageway electromagnetic heater also includes a junction box and a control system, wherein the control system is connected to the electromagnetic induction coil through the junction box.

[0017] The beneficial effects of this utility model are: the transition connection between the heater's vertical pipe and the reaction vessel is achieved through a reducing joint, which solves the problem of weld cracking between the heater's vertical pipe and the reaction vessel; and the reducing joint increases the outlet area of ​​the vertical pipe passage outlet pipe, solving the problem of condensation blockage at the outlet of the vertical pipe passage and the upper end of the cooling tank. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the sponge titanium passageway electromagnetic heater of this utility model. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1 As shown, this utility model discloses a sponge titanium passage electromagnetic heater, which is connected between a reaction tank and a cooling tank. It includes a vertical pipe 1, a horizontal pipe 2, and a reducing joint 3. The two ends of the horizontal pipe 2 are respectively connected to two vertical pipes 1. The inner side of the reducing joint 3 is provided with a reducing port 31 that gradually widens from the top to the bottom. The vertical pipe 1 is connected to the reducing joint 3. The pipe outlet of the vertical pipe 1 is connected to the top of the reducing port 31. The outer side of the reducing joint 3 is connected to the upper cover plate of the reaction tank or cooling tank. The bottom of the reducing port 31 is connected to the interior of the reaction tank or cooling tank.

[0021] The reducing connector 3 includes an inner cover plate 32, an outer cover plate 33, and a connector base plate 34. The inner cover plate 32 is a cone-shaped structure that gradually expands from the top to the bottom. The outer cover plate 33 is located outside the inner cover plate 32. The connector base plate 34 is connected to the bottom of the inner cover plate 32 and the bottom of the outer cover plate 33 respectively. The top of the outer cover plate 33 is connected to the vertical pipe 1. The outer cover plate 33 is connected to the top cover plate of the reaction vessel or cooling vessel.

[0022] The reducing joint 3 also includes a joint flange 35, an outer cover plate 33 and a joint flange 35 welded together, and a joint flange 35 welded to the upper cover plate of the reaction vessel or cooling vessel.

[0023] Traditional electromagnetic induction aisle heaters have their vertical pipe 1 welded to the bottom of the furnace cover plate of the reaction vessel and cooling vessel. This results in a large temperature difference between the upper and lower parts. Because metal materials expand at high temperatures and contract upon cooling, the weld between the vertical pipe 1 and the furnace cover plate frequently cracks, severely impacting normal production and increasing maintenance. To address this issue, this invention integrates the electromagnetic induction aisle heater and the aisle outlet electromagnetic induction heater. The structure and welding method of the electromagnetic induction heater are changed: the top of the vertical pipe 1 is welded to the inner cover plate 32 of the reducing joint 3; the bottom of the inner cover plate 32 of the reducing joint 3 is welded to the joint base plate 34; the joint base plate 34 is welded to the outer cover plate 33; the outer cover plate 33 is welded to the joint flange 35; and the joint flange 35 is welded to the upper cover plate of the reaction vessel and cooling vessel. Since the upper cover plate of the reaction vessel and cooling vessel has a lower temperature and a smaller thermal expansion / contraction ratio, the weld cracking problem at the aisle outlet is solved. Meanwhile, instead of directly welding the vertical pipe 1 to the reaction vessel and cooling vessel, a reducing joint 3 is used as a transition welding component to solve the problem of weld cracking between the vertical pipe 1 and the reaction vessel and cooling vessel.

[0024] The smelting of sponge titanium involves rapidly cooling the gaseous titanium in a reactor by spraying cool water through a passageway and outside the cooling tank at high temperatures. This process leads to condensation and blockage at the passageway outlet and the top of the cooling tank, a phenomenon attributed to the small size and low temperature at the outlet. To address this, the original passageway structure was modified by adding a reducing joint 3. The diameter gradually increases from the outlet of the vertical pipe 1 to the inside of the cooling tank. This increased power, temperature, and outlet area of ​​the outlet pipe resolved the condensation and blockage issues, and its effectiveness has been validated in practice.

[0025] The sponge titanium passageway electromagnetic heater also includes an electromagnetic induction coil 4, which is wound around the inner cover plate 32. The electromagnetic induction coil 4 is also wound around the exterior of both the vertical pipe 1 and the horizontal pipe 2. The reducing joint 3, the vertical pipe 1, and the horizontal pipe 2 are all made of metal.

[0026] The sponge titanium passageway electromagnetic heater also includes a junction box 8 and a control system 9. The control system 9 is connected to the electromagnetic induction coil 4 through the junction box 8. The control system 9 controls the current intensity of the electromagnetic induction coil 4 to control the temperature of the heating element and adjust the heating power.

[0027] The current in the electromagnetic induction coil 4 can be controlled via the control system 9 and the junction box 8. The electromagnetic induction heater converts alternating current (AC) to direct current (DC) via an electromagnetic induction power supply, and then converts the DC current into high-frequency alternating current. This high-frequency alternating current acts on the electromagnetic induction coil 4 outside the metal heating element, generating a magnetic field. The magnetic lines of force cut through the metal heating element within the coil, generating eddy currents. These eddy currents collide, causing the metal element to heat up rapidly. Therefore, energizing the electromagnetic induction coil 4 on the reducing joint 3, the vertical pipe 1, and the horizontal pipe 2 allows for heating of these components.

[0028] The titanium sponge passageway electromagnetic heater also includes insulation cotton 5, which is wrapped around the outside of the vertical pipe 1 and the horizontal pipe 2. The insulation cotton 5 is a heat-resistant material with a temperature resistance of 1250 degrees Celsius, which can prevent heat loss from the vertical pipe 1 and the horizontal pipe 2 during electromagnetic heating.

[0029] The sponge titanium passageway electromagnetic heater also includes an outer protective cover 6, which is fitted over the outside of the vertical pipe 1 and the horizontal pipe 2. An insulation chamber is formed between the outer protective cover 6 and the vertical pipe 1 and horizontal pipe 2, and insulation cotton 5 is filled within the insulation chamber. The outer insulation cover is made of 304 stainless steel, is easy to install, and is corrosion-resistant, temperature-resistant, impact-resistant, aesthetically pleasing, and easy to clean.

[0030] The sponge titanium passage electromagnetic heater also includes temperature sensors 7, which are connected to the vertical pipe 1, horizontal pipe 2, and reducing joint 3. Temperature sensors 7 establish a signal transmission connection with the control system 9. The sponge titanium passage device is equipped with multiple temperature sensors 7 (thermocouples) to ensure the controllability and accuracy of the temperature in each section of the entire heater. During the heating process in the sponge titanium distillation passage, the temperature sensors 7 (thermocouples) are in close contact with the distillation passage and collect temperature signals, which are sent to the internal program of the temperature control system 9. PID calculations are used to control the temperature and adjust the power.

[0031] The horizontal tube 2 is composed of two sub-horizontal tubes 21, each connected to a vertical tube 1. The ends of the sub-horizontal tubes 21 are equipped with horizontal tube flanges 22. The ends of the two sub-horizontal tubes 21 are joined and fixed together by the horizontal tube flanges 22. This structure, dividing the horizontal tube 2 into two sub-horizontal tubes 21, allows the entire electromagnetic heater to be disassembled and assembled, preventing it from becoming too large and inconvenient for transportation and handling. During transport, it can be disassembled independently first, and then reassembled at the installation location, making the entire heater more convenient.

[0032] The sponge titanium passageway electromagnetic heater of this invention has the following advantages:

[0033] 1) Solving the problem of weld cracking at the weld points between the titanium sponge reactor, cooling tank bottom plate, and vertical pipe 1. Previously, the bottom of the vertical pipe 1 in the titanium sponge passageway was welded to the reactor bottom plate. Due to the different thermal expansion and contraction ratios of the different metal materials, fatigue cracking occurred during long-term operation. To address this, the titanium sponge passageway electromagnetic heater was designed as a single unit, with vertical pipe 1 and the reactor bottom plate installed independently. The welding structure and connection method at the intersection of vertical pipe 1 and the bottom plate were modified. By changing the welding location and method, the weld cracking problem was solved.

[0034] 2) The problem of blockage at the outlet of the sponge titanium passage was originally caused by resistance heating. However, resistance heating has certain limitations, which led to blockage at the outlet. The method has now been improved to an integrated electromagnetic induction heating method. In order to facilitate installation and maintenance, the electromagnetic induction heater has been designed as a half-type heater, and the outlet area and outlet temperature have been increased to solve the problem of condensation blockage.

[0035] 3) Solve the problem of excessively high ambient temperature affecting workers' high-temperature operations, and solve the problem of labor intensity for workers on site.

[0036] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A titanium sponge passage electromagnetic heater, wherein the titanium sponge passage electromagnetic heater is connected between a reaction vessel and a cooling vessel, characterized in that, It includes a vertical pipe, a horizontal pipe, and a reducing joint. The two ends of the horizontal pipe are respectively connected to two vertical pipes. The inner side of the reducing joint is provided with a reducing port that gradually widens from the top to the bottom. The vertical pipe is connected to the reducing joint. The pipe outlet of the vertical pipe is connected to the top of the reducing port. The outer side of the reducing joint is connected to the upper cover plate of the reaction tank or cooling tank. The bottom of the reducing port is connected to the interior of the reaction tank or cooling tank.

2. The sponge titanium passageway electromagnetic heater according to claim 1, characterized in that, The reducing joint includes an inner cover plate, an outer cover plate, and a joint base plate. The inner cover plate is a cone-shaped structure that gradually expands from the top to the bottom. The outer cover plate is located outside the inner cover plate. The joint base plate is connected to the bottom of the inner cover plate and the bottom of the outer cover plate. The top of the outer cover plate is connected to the vertical pipe. The outer cover plate is connected to the top cover plate of the reaction vessel or cooling vessel.

3. The sponge titanium passageway electromagnetic heater according to claim 2, characterized in that, It also includes an electromagnetic induction coil, which is wound around the inner cover plate.

4. The sponge titanium passageway electromagnetic heater according to claim 2, characterized in that, The reducing joint also includes a joint flange, the outer cover plate and the joint flange are welded together, and the joint flange is welded to the upper cover plate of the reaction vessel or cooling vessel.

5. The sponge titanium passageway electromagnetic heater according to claim 1, characterized in that, It also includes electromagnetic induction coils, with electromagnetic induction coils wound around the outside of both the vertical and horizontal tubes.

6. The sponge titanium passageway electromagnetic heater according to claim 1, characterized in that, It also includes thermal insulation cotton, which is wrapped around the outside of the vertical and horizontal pipes.

7. The sponge titanium passageway electromagnetic heater according to claim 6, characterized in that, It also includes an outer protective cover, which is fitted over the outside of the vertical and horizontal pipes, forming an insulation chamber between the outer protective cover and the vertical and horizontal pipes, and the insulation cotton is filled in the insulation chamber.

8. The sponge titanium passageway electromagnetic heater according to claim 1, characterized in that, It also includes temperature sensors, which are connected to the vertical pipe, horizontal pipe, and reducing joint.

9. The sponge titanium passageway electromagnetic heater according to claim 1, characterized in that, The horizontal pipe is composed of two sub-horizontal pipes, each of which is connected to a vertical pipe. The end of each sub-horizontal pipe is provided with a horizontal pipe flange, and the pipe ends of the two sub-horizontal pipes are joined together and fixed by the horizontal pipe flange.

10. The sponge titanium passageway electromagnetic heater according to claim 3 or 5, characterized in that, It also includes a junction box and a control system, wherein the control system is connected to the electromagnetic induction coil through the junction box.

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