Double-channel power frequency intermediate tank heating device

Abstract

The utility model discloses a double-channel power frequency intermediate tank heating device which comprises an intermediate tank and an injection chamber, the intermediate tank is communicated with the injection chamber through two flow guide pipes, the flow guide pipes are in an inverted V shape, the high ends of the flow guide pipes are communicated with inspection pipes, heating wires are arranged on the outer walls of the flow guide pipes, and the injection chamber is communicated with the inspection pipes. The heating wire wraps the outer wall of the flow guide pipe in a snakelike mode, a heat insulation layer used for wrapping the heating wire is arranged on the outer wall of the flow guide pipe, a side hole is formed in the outer wall of the inspection pipe, and the outside of the side hole is communicated with a hot air fan. The device has the advantages that accumulation of liquid in the flow guide pipe is reduced through the inverted-V-shaped flow guide pipe, the risk of liquid accumulation or gas accumulation is reduced, and efficiency is improved; by combining the snakelike heating wire and the heat insulation layer, heat loss can be effectively reduced, fluid can be uniformly heated, heat efficiency is improved, and efficient fluid transmission is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of casting, concretely relates to double -channel industrial frequency intermediate ladle heating device. BACKGROUND

[0002] In the field of casting, double -channel industrial frequency intermediate ladle is an important equipment for casting process, and is mainly applied to the smelting, pouring and temperature control of aluminum alloy and other metals. The equipment is usually made of high-temperature resistant material and can withstand the long-term action of high-temperature metal liquid. Double -channel design means that the intermediate ladle has two independent channels, which can simultaneously carry out multiple casting processes and improve production efficiency. Industrial frequency (50Hz or 60Hz) refers to the power frequency used when the equipment is running. This frequency is usually consistent with the power frequency of the power grid to ensure stable operation of the equipment.

[0003] The existing heating device may have a large temperature fluctuation problem, especially during fluid transmission, due to uneven heating or poor heat insulation effect, which may cause unstable temperature of the fluid and affect the stability of the subsequent process. And due to uneven distribution of heating wires or insufficient contact with the surface of the pipeline on the traditional equipment, local overheating or insufficient heating may occur. SUMMARY

[0004] The purpose of the utility model is to provide a double -channel industrial frequency intermediate ladle heating device to solve the above problems, as described below.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] The double -channel industrial frequency intermediate ladle heating device provided by the utility model comprises an intermediate ladle and an injection chamber, the intermediate ladle and the injection chamber are communicated through two guide pipes, the guide pipe is inverted "V" shape, the high end of the guide pipe is communicated with an inspection pipe, the outer wall of the guide pipe is provided with a heating wire, the heating wire is wrapped in the outer wall of the guide pipe in the shape of a snake, the outer wall of the guide pipe is provided with a heat insulation layer for wrapping the heating wire, the outer wall of the inspection pipe is provided with a side hole, and the outside of the side hole is communicated with a hot air blower.

[0007] In some embodiments, a cover plate is detachably connected to the opening of the inspection pipe, and a temperature sensor for detecting the temperature inside the inspection pipe is arranged on the cover plate.

[0008] In some embodiments, a controller is further included, and the temperature sensor, the heating wire and the controller are electrically connected.

[0009] In some embodiments, the heating wire is in the shape of an arc surface after bending, and is adapted to the outer wall of the guide pipe.

[0010] In some embodiments, the flow guide pipe comprises an outer layer and an inner layer, the outer layer is stainless steel or nickel alloy, and the inner layer is ceramic coating or high-temperature alloy.

[0011] In some embodiments, the outer wall of the outer layer of the flow guide pipe is provided with grooves corresponding to the heating wires.

[0012] In some embodiments, the heat insulation layer is ceramic fiber or high-temperature silicate material.

[0013] The beneficial effects are:

[0014] The inverted "V"-shaped flow guide pipe reduces the accumulation of liquid in the flow guide pipe, reduces the risk of liquid or gas accumulation, and improves the efficiency; in combination with the serpentine heating wire and the heat insulation layer, the heat loss can be effectively reduced and the fluid can be uniformly heated, the thermal efficiency is improved, and the efficient transmission of the fluid is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed in the description of the embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0016] Fig. 1 is a schematic diagram of the internal structure of the present application;

[0017] Fig. 2 is a schematic diagram of the distribution structure of the heating wire outside the communication passage in the present application.

[0018] The reference signs are explained as follows:

[0019] 1, middle tank; 2, injection chamber; 3, communication passage; 301, inspection pipe; 302, cover plate; 303, side hole; 4, heating wire; 5, heat insulation layer. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme of the present application will be described in detail below. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0021] First embodiment:

[0022] Referring to Figs. 1-2As shown, the utility model provides double -channel industrial frequency intermediate tank heating device, including intermediate tank 1 and injection chamber 2, intermediate tank 1 and injection chamber 2 will adopt alloy material or stainless steel, these materials can keep stable mechanical property and corrosion resistance under high temperature environment, prevent the degeneration due to the effect of high temperature or chemical medium. Among them, intermediate tank 1 is used to store and heat raw materials, injection chamber 2 is used to inject the material after heating into casting mold or other process unit.

[0023] Intermediate tank 1 and injection chamber 2 are communicated by two flow guide pipes, the flow guide pipe is inverted " V " shape, this shape can effectively prevent fluid or gas accumulation in the pipeline, thereby reducing the risk of effusion or gas, improving system efficiency.

[0024] The high end of the flow guide pipe is communicated with the inspection pipe 301, the flow of liquid material in the flow guide pipe can be checked by the inspection pipe, so that the inside of the flow guide pipe can be cleaned, the flow guide pipe outer wall is provided with heating wire 4, the heating wire 4 is wrapped in the flow guide pipe outer wall in the shape of a snake, the serpentine wrapped heating wire 4 can greatly increase the contact area of the heating wire 4 and the flow guide pipe, so as to realize more uniform heating, reduce the problem of local overheating or large temperature difference, in addition, the heating wire 4 can effectively cover more surface in limited space, improve the heating efficiency and optimize the design of the device.

[0025] The flow guide pipe outer wall is provided with a heat insulation layer 5 for wrapping the heating wire 4, the heat insulation layer 5 is ceramic fiber or high temperature silicate material, which can effectively reduce heat loss and improve heating efficiency, and the heat insulation layer 5 can also prevent the heating wire 4 from overheating and prolong the service life.

[0026] Further, since the flow guide pipe is inverted " V " shape, it can effectively guide the material to flow downward or in a specific direction, reduce the problem of blockage or uneven flow rate, specifically, when the material passes through the flow guide pipe, due to the inclined design on both sides, the material will be subjected to more uniform pressure during flow, reducing the turbulence or instability phenomenon caused by irregular shape, and the inverted " V " shape can make the flow more uniform and stable.

[0027] And the angle of inverted " V " shape can make the material flow or sink more easily and quickly under the action of gravity. Gravity helps the material to flow smoothly along the inclined part of the pipeline, reducing the influence of friction, especially during heating or processing, the material can enter the subsequent process flow more quickly, improving the overall efficiency.

[0028] Since the material flows inside the flow guide pipe, the material inside the flow guide pipe often relies on the heat conduction of the outer wall of the flow guide pipe to take heat, thereby causing the surface temperature of the material to be low. The outer wall of the inspection pipe 301 is provided with a side hole 303, and the outside of the side hole 303 is in communication with the hot air fan. The hot air fan can assist the hot air to pass through, and the hot air fan can provide continuous hot air flow to help control the temperature in the inspection pipe 301, so that the overall temperature of the material remains relatively consistent.

[0029] The opening of the inspection pipe 301 is detachably connected with a cover plate 302, and the cover plate 302 is provided with a temperature sensor for detecting the temperature inside the inspection pipe 301. The temperature sensor is used to monitor the temperature in the inspection pipe 301. The model of the temperature sensor can be a K-type thermocouple, which is suitable for a wide temperature range, for example, -200°C to +1800°C, has a fast response speed, ensures that the system operates within a reasonable temperature range, and can provide real-time feedback of temperature changes. The sensor also includes a controller, and the temperature sensor and the heating wire 4 are electrically connected to the controller. The controller can receive temperature feedback from the temperature sensor to control the operation of the heating wire 4. The model of the controller can be an E5CC series or E5CN series PID controller from Omron, which provides a temperature sensor input interface and can perform PID control.

[0030] The second embodiment differs from the first embodiment in that:

[0031] The heating wire 4 is in an arc shape after bending and is adapted to the outer wall of the flow guide pipe, so that the heating wire 4 is wrapped in an arc shape on the outer side of the flow guide pipe, which can better adapt to the shape of the flow guide pipe and maintain the uniformity of heating. The heating wire 4 forms a wide heating area on the outer side of the entire flow guide pipe bottom and middle, preventing local overheating.

[0032] The flow guide pipe includes an outer layer and an inner layer. The outer layer is made of stainless steel or nickel alloy, and the inner layer is made of ceramic coating or high-temperature alloy. The outer layer can withstand high temperatures and has good thermal conductivity, so that the temperature of the heating wire 4 can be transmitted. The inner wall of the flow guide pipe can be made of ceramic coating or high-temperature alloy, which has good wear resistance and corrosion resistance, especially when high-temperature and molten metal pass through, which has better durability.

[0033] Further, the outer wall of the outer layer of the flow guide pipe is provided with a groove corresponding to the heating wire 4. The groove can limit and assist the fixation of the heating wire 4, and the thickness of the outer layer at the groove is smaller, which has better temperature transmission effect. The groove usually reduces the amount of material used, thereby reducing the overall weight and the use of raw materials, thereby reducing production costs.

[0034] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A double-channel power frequency intermediate tank heating device, comprising an intermediate tank (1) and an injection chamber (2), characterized in that: the intermediate tank (1) and the injection chamber (2) are communicated through two flow guide pipes, the flow guide pipes are inverted "V" shaped, and the high ends of the flow guide pipes are communicated with inspection pipes (301); the outer wall of the flow guide pipe is provided with heating wires (4), the heating wires (4) are wrapped in a serpentine shape on the outer wall of the flow guide pipe, the outer wall of the flow guide pipe is provided with a heat insulation layer (5) for wrapping the heating wires (4), and the outer wall of the inspection pipe (301) is provided with a side hole (303), and the outside of the side hole (303) is communicated with a hot air fan. A cover plate (302) is detachably connected at the opening of the inspection pipe (301), and the cover plate (302) is provided with a temperature sensor for detecting the temperature inside the inspection pipe (301). Further comprising a controller, and the temperature sensor and the heating wires (4) are electrically connected with the controller.

2. The dual pass industrial frequency intermediate tank heating device of claim 1, wherein: The heating wires (4) are in an arc surface after bending, and are matched with the outer wall of the flow guide pipe.

3. The dual pass industrial frequency intermediate vessel heating apparatus of claim 2, wherein: The flow guide pipe comprises an outer layer and an inner layer, the outer layer is stainless steel or nickel alloy, and the inner layer is ceramic coating or high-temperature alloy.

4. A dual pass industrial frequency intermediate tank heating arrangement according to claim 2 or 3 characterised in that: The outer wall of the outer layer of the flow guide pipe is provided with a groove corresponding to the heating wires (4).

5. The dual pass industrial frequency intermediate vessel heating apparatus of claim 4, wherein: The heat insulation layer (5) is ceramic fiber or high-temperature silicate material.

6. The dual pass industrial frequency intermediate vessel heating apparatus of claim 5, wherein: ​ 7. The dual pass industrial frequency intermediate tank heating device of claim 1, wherein: ​

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