Preposition water-cooled air pre-vapor boiler

Abstract

The pre-cooled air pre-steam boiler is equipped with a boiler body and a steam outlet for steam outflow. The steam outlet is connected to an outlet pipe, which is a superheater outlet pipe. A gate valve connects the superheater outlet pipe and the steam outlet. Combined with a series configuration of temperature monitoring components, this achieves precise control of steam parameters and effectively prevents overpressure and backflow risks through the synergistic action of safety valves and check valves. The maintenance access is equipped with a dedicated staircase, providing direct access to critical component areas, greatly shortening maintenance cycles and reducing operational difficulty. Simultaneously, the condensation circuit adopts a through-flow layout of main and branch pipes, enhancing heat recovery efficiency and reducing energy loss.

Description

Technical Field

[0001] This utility model relates to a steam boiler, specifically a pre-cooled water-cooled air pre-steam boiler. Background Technology

[0002] Steam boilers convert water into high-temperature, high-pressure steam by burning fuel, thus converting thermal energy into mechanical or electrical energy. They are widely used in power generation, petrochemicals, paper and textiles, food processing, and district heating. The flame temperature inside the furnace can reach over 1500℃, and pressure-bearing components endure steam pressures several times that of atmosphere for extended periods. They also face the risks of corrosion from sulfides and nitrogen oxides in the flue gas, as well as scaling due to poor water quality. To ensure safety and efficiency, they require water treatment systems, combustion control systems, and exhaust gas purification devices. These systems precisely control the fuel-air ratio, monitor pressure and temperature parameters, and employ low-NOx combustion, desulfurization, and denitrification technologies to reduce pollutant emissions. Therefore, they demand extremely high levels of material heat resistance, sealing, and automation. Their energy efficiency and pollution control are directly linked to the sustainability of industrial production.

[0003] In the prior art, 202321216853.X discloses a steam boiler system. This utility model discloses a steam boiler system comprising a steam boiler, a flash evaporation component, a heat storage component, a generator, and a falling film reactor. The flash evaporation component is connected to the steam boiler to flash-evaporate water flowing from the steam boiler into steam. One end of the heat storage component is connected to both the steam boiler and the flash evaporation component, allowing steam flowing from both components to flow into the heat storage component, thus heating the steam flowing from the flash evaporation component. The generator contains a reaction liquid, and the other end of the generator is connected to the heat storage component, allowing steam flowing from the heat storage component to flow into the generator to heat the reaction liquid and concentrate it. The inlet is suitable for supplying boiler feedwater, the liquid inlet is connected to one end of the generator, the air inlet is connected to the steam boiler, the liquid outlet is connected to the other end of the generator, and the water outlet is connected to the steam boiler. This utility model has advantages such as simple structure and low cost.

[0004] Although existing technologies utilize the heat energy of flue gas, sewage, and steam generated by steam boilers to reduce the heat loss of steam boiler exhaust, they also have the problems of not being able to preheat air and high energy consumption. Utility Model Content

[0005] To overcome the shortcomings of existing technologies that do not preheat air and have high energy consumption, this utility model provides a pre-cooled water-cooled air preheating steam boiler.

[0006] This utility model is achieved using the following technical solution: a pre-cooled water-cooled air preheating steam boiler, comprising a boiler body, a steam outlet for steam outflow on the boiler body, an outlet pipe on the steam outlet, the outlet pipe being a superheater outlet pipe, a gate valve connecting the superheater outlet pipe and the steam outlet, multiple temperature monitoring components on the superheater outlet pipe, a superheater connecting pipe on one side of the steam outlet, an air preheating component on the boiler body, the air preheating component being a water-cooled air preheater, and a heat exchange tube being a silicon-magnesium-aluminum heat exchanger inside the water-cooled air preheater.

[0007] The boiler body is equipped with maintenance components, which are maintenance passages. Maintenance stairs are provided on the maintenance passages for operators to climb. A water level control component is provided on one side of the boiler body.

[0008] The water level control component is a dual control component, consisting of a first control component and a second control component. The first control component is a water level alarm, and the second control component is a water level controller.

[0009] A first water level gauge is installed next to the water level alarm. The first water level gauge is a flat plate water level gauge. A second water level gauge is installed next to the water level controller. The second water level gauge is a dual-color water level gauge.

[0010] The temperature monitoring component is a temperature gauge, a temperature transmitter is installed on one side of the temperature gauge, a check valve is installed on one side of the temperature transmitter, and a safety valve is installed on one side of the check valve.

[0011] A condensing circuit is provided on one side of the boiler body. The condensing circuit is a condensing pipe. The condensing pipe is provided with a main pipe and a branch pipe, and the main pipe and the branch pipe are interconnected.

[0012] The branch pipe is divided into a left branch pipe and a right branch pipe. A base is installed on the left branch pipe, and a pipeline pump is installed on the base. A boiler inlet pump is installed on the right branch pipe, and a backup inlet pump is installed on one side of the boiler inlet pump.

[0013] Compared to existing technologies, the water-cooled air preheater preheats the air, and the high-temperature condensate in the heat exchanger exchanges heat with the air to heat it to a certain temperature. Then, the air is mixed with gas and combusted by a blower, which can improve the burnout rate, reduce gas consumption, and improve boiler thermal efficiency. The pre-cooled air preheating steam boiler significantly improves the operational stability and maintenance convenience through multiple safety protection mechanisms. A gate valve is installed between the superheater outlet pipe and the steam outlet. Combined with the series configuration of temperature monitoring components, the maintenance passage is equipped with maintenance stairs, which can directly reach the critical component area, greatly shortening the maintenance cycle and reducing the difficulty of operation. At the same time, the condensation circuit adopts a through layout of main pipes and branch pipes to enhance heat recovery efficiency and reduce energy loss.

[0014] The No. 1 water level alarm and the No. 2 water level controller form a joint defense mechanism. Combined with the visual combination of the flat plate water level gauge and the dual-color water level gauge, it realizes real-time early warning and automatic adjustment of abnormal water levels, ensuring stable water supply to the boiler under complex operating conditions. The left branch pipe base in the condensation circuit integrates a pipeline pump, and the right branch pipe is equipped with a main water inlet pump and a backup water inlet pump, forming a dual water supply guarantee system, effectively avoiding the problem of steam boiler shutdown caused by single-point failure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the water-cooled air preheater in this utility model;

[0018] Figure 4 This is a schematic diagram of the water-cooled air preheater in this utility model;

[0019] Figure 5 This is a schematic diagram of the water-cooled air preheater in this utility model;

[0020] In the diagram: 1 is the boiler body, 2 is the steam outlet, 3 is the outlet pipe, 4 is the gate valve, 5 is the superheater connection pipe, 6 is the maintenance passage, 7 is the maintenance staircase, 8 is the water level alarm, 9 is the water level controller, 10 is the No. 1 water level gauge, 11 is the No. 2 water level gauge, 12 is the thermometer, 13 is the temperature transmitter, 14 is the check valve, 15 is the safety valve, 16 is the main pipeline, 17 is the branch pipeline, 18 is the pipeline pump, 19 is the boiler feed water pump, 20 is the standby feed water pump, 21 is the water-cooled air preheater, and 22 is the heat exchange tube. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] A pre-cooled water-cooled air preheating steam boiler includes a boiler body 1 with a steam outlet 2 for steam outflow. The steam outlet 2 has an outlet pipe 3, which is a superheater outlet pipe. A gate valve 4 connects the superheater outlet pipe and the steam outlet 2. Multiple temperature monitoring components are installed on the superheater outlet pipe. A superheater connecting pipe 5 is located on one side of the steam outlet 2. An air preheating component, specifically a water-cooled air preheater 21, is also installed on the boiler body 1. The water-cooled air preheater 21 contains heat exchange tubes 22, which are silicon-magnesium-aluminum heat exchangers. The air is preheated through the water-cooled air preheater, where high-temperature condensate and air exchange heat to a certain temperature. The air is then mixed with fuel gas and combusted by a blower, improving burnout rate, reducing fuel consumption, and increasing boiler thermal efficiency.

[0023] The boiler body 1 is equipped with maintenance components, namely maintenance passage 6. Maintenance stairs 7 are provided on the maintenance passage 6 for operators to climb. A water level control component is provided on one side of the boiler body 1.

[0024] The water level control component is a dual control component, consisting of a first control component and a second control component. The first control component is a water level alarm 8, and the second control component is a water level controller 9. The pre-cooled air pre-steam boiler significantly improves operational stability and maintenance convenience through multiple safety mechanisms. A gate valve 4 is installed between the superheater outlet pipe and the steam outlet 2. Combined with the series configuration of temperature monitoring components, it not only achieves precise control of steam parameters, but also effectively prevents overpressure and backflow risks through the synergistic action of safety valves and check valves. The maintenance passage is equipped with maintenance stairs 7, which can directly reach the critical component area, greatly shortening the maintenance cycle and reducing the difficulty of operation. At the same time, the condensation circuit adopts a through-type layout of main pipe 16 and branch pipe 17 to enhance heat recovery efficiency and reduce energy loss.

[0025] A water level gauge 10 is installed next to the water level alarm 8. The water level gauge 10 is a flat plate water level gauge. A water level gauge 11 is installed next to the water level controller 9. The water level gauge 11 is a dual-color water level gauge. The temperature monitoring component is a thermometer 12. A temperature transmitter 13 is installed on one side of the thermometer 12. A check valve 14 is installed on one side of the temperature transmitter 13. A safety valve 15 is installed on one side of the check valve 14.

[0026] The No. 1 water level alarm and the No. 2 water level controller form a joint defense mechanism. Combined with the visualization combination of the flat plate water level gauge and the dual-color water level gauge, it realizes real-time early warning and automatic adjustment of abnormal water levels. This layered monitoring strategy not only improves the accuracy of water level control, but also avoids the risk of misjudgment caused by the failure of a single device through the complementary characteristics of different types of instruments, ensuring stable water supply to the boiler under complex operating conditions. In the condensing circuit, the left branch pipe base integrates the pipeline pump 18, and the right branch pipe is equipped with the boiler inlet water pump 19 and the backup inlet water pump 20, forming a dual water supply guarantee system, effectively avoiding the problem of steam boiler shutdown caused by single-point failure.

[0027] A condensing circuit is provided on one side of the boiler body 1. The condensing circuit is a condensing pipe. A main pipe 16 and a branch pipe 17 are provided on the condensing pipe. The main pipe 16 and the branch pipe 17 are interconnected. The branch pipe is divided into a left branch pipe and a right branch pipe. A base is provided on the left branch pipe. A pipe pump 18 is provided on the base. A boiler inlet pump 18 is provided on the right branch pipe. A standby inlet pump 20 is provided on one side of the boiler inlet pump 19.

[0028] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A pre-cooled water-cooled air pre-steam boiler, comprising a boiler body, a steam outlet for steam outflow on the boiler body, an outlet pipe for superheater outlet pipe on the steam outlet, a gate valve for connecting the superheater outlet pipe and the steam outlet, multiple temperature monitoring components on the superheater outlet pipe, a superheater connecting pipe on one side of the steam outlet, and a water level control component on one side of the boiler body, characterized in that: The boiler body is equipped with an air preheating component, which is a water-cooled air preheater. The water-cooled air preheater is equipped with heat exchange tubes, which are silicon-magnesium-aluminum heat exchangers.

2. The pre-cooled water-cooled air pre-steam boiler according to claim 1, characterized in that: The water level control component is a dual control component, consisting of a first control component and a second control component. The first control component is a water level alarm, and the second control component is a water level controller.

3. The pre-cooled water-cooled air pre-steam boiler according to claim 2, characterized in that: A first water level gauge is installed next to the water level alarm. The first water level gauge is a flat plate water level gauge. A second water level gauge is installed next to the water level controller. The second water level gauge is a dual-color water level gauge.

4. The pre-cooled water-cooled air pre-steam boiler according to claim 1, characterized in that: The temperature monitoring component is a temperature gauge, a temperature transmitter is installed on one side of the temperature gauge, a check valve is installed on one side of the temperature transmitter, and a safety valve is installed on one side of the check valve.

5. The pre-cooled water-cooled air pre-steam boiler according to claim 1, characterized in that: A condensing circuit is provided on one side of the boiler body. The condensing circuit is a condensing pipe. The condensing pipe is provided with a main pipe and a branch pipe, and the main pipe and the branch pipe are interconnected.

6. The pre-cooled water-cooled air pre-steam boiler according to claim 5, characterized in that: The branch pipe is divided into a left branch pipe and a right branch pipe. A base is installed on the left branch pipe, and a pipeline pump is installed on the base. A boiler inlet pump is installed on the right branch pipe, and a backup inlet pump is installed on one side of the boiler inlet pump.

7. The pre-cooled water-cooled air pre-steam boiler according to claim 1, characterized in that: The boiler body is equipped with maintenance components, which are maintenance passages, and maintenance stairs are provided on the maintenance passages for operators to climb.

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