Steam superheater

Abstract

This utility model discloses a steam superheater, comprising a shell mounted on the ground via supports, with end caps at both ends of the shell via sealing flanges, and a flow channel for steam circulation inside the shell, with an inlet pipe and an outlet pipe passing through the end caps at both ends of the flow channel; a heating element is bolted into the flow channel inside the shell, and a heater connected to the heating element is installed outside the shell; several temperature sensors are installed in the flow channel, and a PLC controller for controlling the steam temperature is installed on the shell. This utility model improves the efficiency of steam heating by heating steam with controllable heating elements, and can adjust the heating intensity according to the monitored steam temperature information to achieve precise steam temperature regulation, keeping the steam superheater temperature within a preset range, improving product quality, and ensuring the stability of the production process.

Description

Technical Field

[0001] This utility model relates to the field of thermal energy engineering equipment technology, and more specifically to a steam superheater. Background Technology

[0002] In industrial production, steam serves as a crucial energy carrier, widely used in numerous fields such as power generation, chemical engineering, and textiles. The steam superheater, a key component that further heats steam from its saturation temperature to its superheated temperature, directly impacts the operational efficiency and stability of the entire steam power system.

[0003] Currently, common steam superheaters face several pressing problems in practical applications. For example, some superheaters have low heat exchange efficiency, failing to meet the growing demands of industrial production for steam superheating. Their internal structural design is also inadequate, resulting in insufficient steam flow within the superheater, inadequate contact time and area with the heating medium, and consequently, insufficient heat transfer. This not only wastes energy and increases production costs but may also disrupt subsequent production processes.

[0004] Furthermore, some steam superheaters lack precise temperature control. In industrial production, different processes often have strict and precise requirements for the superheating temperature of steam. However, some existing superheaters struggle to quickly and accurately adjust the heating intensity when faced with fluctuations in parameters such as steam flow rate, pressure, and heating medium temperature during production, leading to significant deviations in the steam superheating temperature. This can adversely affect product quality and even cause production accidents.

[0005] Moreover, the maintenance of traditional steam superheaters is relatively complex. Their internal structure is compact, and some key components are prone to wear and corrosion after long-term use. However, due to the structural design, maintenance personnel face limited operating space and difficulty when inspecting and replacing these components. This not only increases the maintenance cost and time of the equipment, but may also lead to excessive downtime, affecting the continuity of production. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a steam superheater to solve the problems of low heat exchange efficiency, inaccurate temperature control and complex maintenance of existing steam superheaters.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0008] A steam superheater includes an outer shell mounted on the ground via supports. Both ends of the outer shell are sealed with flanges and end caps. An internal flow channel for steam circulation is provided within the outer shell, with an inlet pipe and an outlet pipe passing through the end caps at both ends of the flow channel. Heating elements for heating the steam are bolted into the flow channel within the outer shell, and a heater connected to the heating elements and used to control their heating is located outside the outer shell. Several temperature sensors for detecting the steam temperature within the flow channel are installed inside the channel. A PLC controller for controlling the steam temperature is mounted on the outer shell. The outputs of the temperature sensors are connected to the inputs of the PLC controller, and the outputs of the PLC controller are connected to the inputs of the heater.

[0009] To further optimize the technical solution, several baffles are arranged crosswise on the inner wall of the outer shell to improve the heat exchange efficiency between steam and heating elements.

[0010] To further optimize the technical solution, the baffle is inclined toward the steam outlet direction.

[0011] To further optimize the technical solution, a filter plate for filtering impurities in the incoming steam is installed in the flow channel on one side of the steam inlet pipe.

[0012] To further optimize the technical solution, the outer shell is provided with multiple sections via sealing flanges. Each section of the flow channel is equipped with a set of heating elements, each set of heating elements is equipped with a heater for controlling the heating of the heating elements in that section, and each section of the flow channel is equipped with a temperature sensor for collecting the steam temperature of that section.

[0013] To further optimize the technical solution, the heating element is a heating plate fixed on the inner wall of the outer shell, and a resistance heating wire is provided inside the heating plate.

[0014] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.

[0015] The steam superheater provided by this utility model heats steam through a controllable heating element, which improves the efficiency of steam heating. It can also adjust the heating intensity according to the monitored steam temperature information to achieve precise regulation of steam temperature, so that the temperature of the steam superheater is always kept within the preset range, thereby improving product quality, ensuring the stability of the production process, and reducing production accidents caused by steam superheating temperature deviation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] The components are: 1. Outer shell, 2. End cap, 3. Steam inlet pipe, 4. Steam outlet pipe, 5. Sealing flange, 6. Filter plate, 7. Baffle plate, 8. Heating element, 9. Heater, 10. Temperature sensor, 11. PLC controller, 12. Support. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Steam superheater, combined Figure 1 As shown, the device includes an outer shell 1 mounted on the ground via a support 12. Both ends of the outer shell 1 are provided with end caps 2 via sealing flanges 5. The interior of the outer shell 1 is provided with a flow channel for steam circulation. Both ends of the flow channel are provided with a steam inlet pipe 3 and a steam outlet pipe 4. The steam inlet pipe 3 and the steam outlet pipe 4 pass through the end caps 2 at both ends and are connected to the internal flow channel. Steam enters the flow channel from the steam inlet pipe and is output from the steam outlet pipe.

[0020] The outer shell 1 adopts a detachable modular design, consisting of multiple interconnected shell sections. Each shell section is connected by sealing flange 5 and bolts. When maintenance is required inside the superheater, maintenance personnel can easily disassemble the corresponding modules to obtain sufficient operating space, greatly reducing the difficulty of maintenance.

[0021] A heating element 8 is installed in the flow channel inside the outer shell 1, and a heater 9 is installed on the outside of the outer shell 1 to control the heating of the heating element. Each section of the outer shell is equipped with a heating element 8, and the outside of each section of the outer shell is equipped with a heater 9 to control the heating of the heating element in that section. The heating element 8 is a heating plate fixed on the inner wall of the outer shell. The heating plate is equipped with a high-efficiency resistance heating wire. The heating element is designed in a spiral shape and is evenly arranged on the inner wall of the steam flow channel. This design can increase the contact area between the heating element and the steam, so that the steam can absorb heat more fully, thereby improving the heat exchange efficiency.

[0022] Each section of the outer casing is equipped with a temperature sensor 10 within its flow channel to collect the corresponding steam temperature. A PLC controller 11 is mounted on the outer casing 1. The output of the temperature sensor is connected to the input of the PLC controller, and the output of the PLC controller is connected to the input of the heater. The temperature sensor monitors the temperature of the steam in each section of the superheater in real time and feeds the temperature signal back to the PLC controller. The PLC controller compares the received temperature signal with a preset superheating temperature value. When the detected steam temperature is lower than the preset value, the PLC controller controls the heater to increase the power supply current to the heating element, thereby increasing the heating power of the heating element and enabling the steam to reach the superheating temperature more quickly. When the detected steam temperature is higher than the preset value, the PLC controller controls the heater to decrease the power supply current to the heating element, reducing the heating power and preventing the steam from overheating. This closed-loop control method achieves precise control of the steam superheating temperature.

[0023] Several baffles 7 are arranged crosswise on the inner wall of the outer casing 1. The baffles 7 are inclined towards the steam outlet. The baffles 7 turbulent the steam entering the flow channel, prolong the contact time between the steam and the heating element, and improve the heat exchange efficiency between the steam and the heating element.

[0024] A filter plate 6 is installed in the flow channel on one side of the steam inlet pipe 3 to filter impurities in the steam and prevent them from entering the steam superheater. The filter can be cleaned by removing the flange of the end cap on one side of the steam inlet pipe from the outer shell to ensure that the steam can pass smoothly through the steam superheater for heating.

[0025] In this invention, steam enters the internal circulation channel of the casing through the air inlet. Multiple temperature sensors collect the temperature information of the steam at different locations. The PLC controller sends control commands to the heater based on the set temperature information. The heater then adjusts the current of the heating element to control the steam heating temperature, thereby achieving precise control of the steam temperature, improving product quality, and ensuring the stability of the production process.

Claims

1. A steam superheater characterized by: The system includes a housing (1) mounted on the ground via a support (12). Both ends of the housing (1) are fitted with end caps (2) via sealing flanges (5). The interior of the housing (1) is provided with a steam flow channel. Both ends of the flow channel are respectively provided with an inlet pipe (3) and an outlet pipe (4) passing through the end caps (2). The flow channel inside the housing (1) is bolted with a heating element (8) for heating the steam. The exterior of the housing (1) is provided with a heater (9) connected to the heating element (8) for controlling the heating of the heating element. Several temperature sensors (10) for detecting the steam temperature in the flow channel are provided. A PLC controller (11) for controlling the steam temperature is provided on the housing (1). The output of the temperature sensor is connected to the input of the PLC controller. The output of the PLC controller is connected to the input of the heater.

2. The steam superheater of claim 1, wherein: The inner wall of the outer shell (1) is provided with several baffles (7) to improve the heat exchange efficiency between steam and heating elements.

3. The steam superheater of claim 2, wherein: The baffle (7) is inclined toward the steam outlet.

4. The steam superheater according to claim 1, characterized in that: A filter plate (6) for filtering impurities in the incoming steam is provided in the flow channel on one side of the steam inlet pipe (3).

5. The steam superheater of claim 1, wherein: The outer shell (1) is provided with multiple sections through the sealing flange (5). Each section of the flow channel is provided with a set of heating elements (8). Each set of heating elements is equipped with a heater (9) for controlling the heating of the heating elements in that section. Each section of the flow channel is provided with a temperature sensor (10) for collecting the steam temperature of that section.

6. The steam superheater of claim 1, wherein: The heating element (8) is a heating plate fixed on the inner wall of the outer shell, and a resistance heating wire is provided inside the heating plate.

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