A constant pressure steam heater
Patent Information
- Application Number
- CN202522311919.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-30
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-10-30
AI Technical Summary
然而，由于输送介质的管道管程较长，介质在进入加热器时温度较低，因此介质会在加热器内发生冷凝，进而引起加热器内压力的波动，对加热量的调节往往不够精确，影响设备运行稳定性和能效表现
1.本申请中，恒压蒸汽加热器可通过第一罐体内部的换热组件实现热交换，第一控制阀、第二控制阀和第三控制阀均与外部控制系统电连接，三者协同作用，能对第一罐体内部压力进行精准、及时且高效的控制。当待加热介质通过第一连接管进入第一罐体时，第一控制阀和第二控制阀可根据外部控制系统的指令，调节介质的压力和流量，而第三控制阀可对第二连接管的蒸汽介质流通进行控制，从而有效维持第一罐体内部压力的稳定，避免因介质冷凝等因素导致的压力波动，实现对介质加热量的精确控制，提高设备运行稳定性。
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Figure CN224787099U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heater technology, and in particular to a constant pressure steam heater. Background Technology
[0002] Steam heaters are common industrial heat exchange devices widely used in heating processes in chemical, food processing, and pharmaceutical industries. They utilize steam as the heat medium, leveraging the latent heat of steam to achieve efficient and uniform heat transfer. With technological advancements, steam heaters are evolving towards higher efficiency, energy saving, and stable controllability; therefore, maintaining stable steam pressure has become a significant challenge in this technological field.
[0003] In some industrial settings requiring high-temperature heating, steam heaters can rapidly raise the temperature of low-temperature media to a high-temperature state, thereby improving production efficiency and product quality. However, due to the long pipeline length for transporting the media, the media enters the heater at a low temperature, causing condensation within the heater. This leads to pressure fluctuations within the heater, making it difficult to precisely adjust the heating output, thus affecting the stability and energy efficiency of the equipment. Utility Model Content
[0004] In order to effectively suppress pressure fluctuations caused by condensation of the medium during the heating process and achieve stable control of the heating amount, this application provides a constant pressure steam heater.
[0005] To achieve the above objectives, this application adopts the following technical solution: A constant pressure steam heater includes a first tank body with a heat exchange assembly inside. A first connecting pipe and a second connecting pipe are provided on the side wall of the first tank body. The first connecting pipe is close to the lower end of the first tank body, and the second connecting pipe is close to the upper end of the first tank body. The second tank is connected to the first tank via a second connecting pipe; The pressure regulating assembly includes a first control valve, a second control valve, and a third control valve. The first control valve and the second control valve are disposed on a first connecting pipe, and the third control valve is disposed on a second connecting pipe.
[0006] By employing the aforementioned device, the constant-pressure steam heater achieves heat exchange through the heat exchange components inside the first tank. The first, second, and third control valves are all electrically connected to the external control system, and their coordinated action enables precise, timely, and efficient control of the internal pressure of the first tank. When the medium to be heated enters the first tank through the first connecting pipe, the first and second control valves adjust the pressure and flow rate of the medium according to instructions from the external control system, while the third control valve controls the steam medium flow through the second connecting pipe. This effectively maintains the stability of the internal pressure of the first tank, avoiding pressure fluctuations caused by factors such as medium condensation, achieving precise control of the heating amount of the medium, and improving the operational stability of the equipment.
[0007] Preferably, the first connecting pipe is used to input the medium to be heated, and the second connecting pipe is used to output the steam medium.
[0008] By using the above-mentioned device, the medium to be heated input to the first connecting pipe can be a liquid medium or a low-temperature steam medium, while the output of the second connecting pipe is a high-temperature steam medium heated by the heat exchange components.
[0009] Preferably, the first control valve is a pressure reducing valve, the second control valve is a flow regulating valve, and the third control valve is a constant pressure valve. The first control valve and the second control valve are sequentially arranged on the first connecting pipe according to the input direction of the medium to be heated.
[0010] By employing the above-mentioned device, the pressure reducing valve can stabilize the internal pressure of the first tank by reducing the inlet pressure of the fluid medium in the first connecting pipe; the flow regulating valve can adjust the medium flow rate, and work with the pressure reducing valve and the constant pressure valve to precisely adjust the heating amount; the constant pressure valve helps to maintain the pressure stability between the first tank and the second tank, ensuring the stable operation of the entire constant pressure steam heater, reducing pressure fluctuations, and improving the equipment's operational stability and energy efficiency.
[0011] Preferably, a liquid level sensor is installed inside the first tank.
[0012] By using the above-mentioned device, when the medium to be heated input through the first connecting pipe is a liquid medium, the liquid level in the first tank can be monitored by a liquid level sensor to ensure stable operation of the equipment.
[0013] Preferably, the heat exchange assembly includes a heat exchanger body, a steam inlet pipe, and a water outlet pipe, with the steam inlet pipe located at the top of the first tank and the water outlet pipe located at the bottom of the first tank.
[0014] By using the above-mentioned device, steam enters the heat exchanger body from the steam inlet pipe at the top of the first tank, allowing the steam to flow from top to bottom and fully exchange heat with the medium to be heated in the first tank. The steam after heat exchange forms condensate and is discharged from the outlet pipe, maintaining the normal operation of the heat exchanger body.
[0015] Preferably, the first tank and the heat exchange components are not connected to each other, the steam inlet pipe is connected to the heat exchanger body, and the water outlet pipe is connected to the heat exchanger body.
[0016] By adopting the above-mentioned device, the first tank and the heat exchange components are not connected to each other to avoid mutual interference between the media and ensure the stability of the heating process; the steam inlet pipe is connected to the heat exchanger body to allow steam to enter the heat exchanger for heat exchange, and the water outlet pipe is connected to the heat exchanger body to discharge the water after heat exchange, thus realizing an efficient and stable heat exchange process.
[0017] Preferably, a drain pipe is provided at the bottom of the second tank, a drain valve is provided on the drain pipe, and a steam output pipe is provided at the top of the second tank.
[0018] By using the above-mentioned device, the drain pipe and drain valve can discharge the condensate in the second tank, and the steam output pipe can output the high-temperature steam medium.
[0019] Preferably, a mist eliminator is installed inside the second tank, and the mist eliminator is located near the opening of the steam output pipe.
[0020] By employing the aforementioned device, the mist eliminator can remove tiny droplets and fine particles that cannot settle by gravity from the high-temperature steam medium, ensuring the purity of the steam outlet.
[0021] This application has the following beneficial effects: 1. In this application, the constant pressure steam heater achieves heat exchange through the heat exchange components inside the first tank. The first control valve, second control valve, and third control valve are all electrically connected to the external control system. Working together, they can accurately, promptly, and efficiently control the internal pressure of the first tank. When the medium to be heated enters the first tank through the first connecting pipe, the first and second control valves can adjust the pressure and flow rate of the medium according to the instructions of the external control system, while the third control valve can control the steam medium flow through the second connecting pipe. This effectively maintains the stability of the internal pressure of the first tank, avoids pressure fluctuations caused by factors such as medium condensation, achieves precise control of the heating amount of the medium, and improves the operational stability of the equipment.
[0022] 2. In this application, the pressure reducing valve can stabilize the internal pressure of the first tank by reducing the inlet pressure of the fluid medium in the first connecting pipe; the flow regulating valve can regulate the flow rate of the medium, and work with the pressure reducing valve and the constant pressure valve to precisely regulate the heating amount; the constant pressure valve helps to maintain the pressure stability between the first tank and the second tank, ensure the stable operation of the entire constant pressure steam heater, reduce pressure fluctuations, and improve the equipment's operational stability and energy efficiency. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of the constant pressure steam heater according to an embodiment of the present invention; Figure 2 This is a cross-sectional view of the constant pressure steam heater according to an embodiment of the present invention.
[0024] Explanation of reference numerals in the attached figures: 1. First tank body; 11. First connecting pipe; 12. Second connecting pipe; 2. Second tank body; 21. Drain pipe; 22. Drain valve; 23. Steam output pipe; 24. Mist eliminator; 3. Pressure regulating assembly; 31. First control valve; 32. Second control valve; 33. Third control valve; 4. Heat exchange assembly; 41. Heat exchanger body; 42. Steam inlet pipe; 43. Water outlet pipe; 5. Liquid level sensor. Detailed Implementation
[0025] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.
[0026] A constant pressure steam heater, reference Figure 1-2 The system includes a first tank 1, a second tank 2, and a pressure regulating assembly 3. Both the first tank 1 and the second tank 2 are mounted on a fixed foundation. The first tank 1 is one of the core components of the entire heater, providing a relatively enclosed space for the heat exchange process. A heat exchange assembly 4 is installed inside the first tank 1 to heat the medium within it. A first connecting pipe 11 and a second connecting pipe 12 connect to the side wall of the first tank 1. The first connecting pipe 11 is located near the lower end of the first tank 1 and is used to input the medium to be heated. The second connecting pipe 12 is located near the upper end of the first tank 1, and the second tank 2 is connected to the first tank 1 via the second connecting pipe 12. The high-temperature steam medium formed after being heated by the heat exchange assembly 4 in the first tank 1 flows from the second connecting pipe 12 to the second tank 2. In this embodiment, the medium to be heated can be a liquid medium or a low-temperature steam medium.
[0027] The pressure regulating assembly 3 includes a first control valve 31, a second control valve 32, and a third control valve 33. The first and second control valves 31 and 32 are installed on the first connecting pipe 11, arranged sequentially according to the flow direction of the medium within the first connecting pipe 11. The third control valve 33 is installed on the second connecting pipe 12. All three valves are electrically connected to an external control system. During operation, the first, second, and third control valves work together to precisely control the flow of steam and the medium, thereby stabilizing the pressure within the first tank 1 and improving the accuracy of heating quantity regulation.
[0028] Specifically, the first control valve 31 is a pressure reducing valve, which stabilizes the internal pressure of the first tank 1 by reducing the inlet pressure of the medium to be heated entering the first tank 1. The second control valve 32 is a flow regulating valve, which works in conjunction with the pressure reducing valve to regulate the flow rate of the medium to be heated entering the first tank 1. The third control valve 33 is a constant pressure valve, which helps maintain pressure stability between the first tank 1 and the second tank 2, ensuring the stable operation of the entire constant pressure steam heater, reducing pressure fluctuations, and thus achieving constant pressure control.
[0029] Reference Figure 1-2 The heat exchange assembly 4 includes a heat exchanger body 41, a steam inlet pipe 42, and a water outlet pipe 43. The first tank 1 and the heat exchange assembly 4 are not connected to each other. The heat exchanger body 41 is the key component for realizing heat exchange. It is usually composed of multiple heat exchange tubes and fins, which can increase the heat exchange area.
[0030] The steam inlet pipe 42 is located at the top of the first tank 1 and is connected to the heat exchanger body 41, used to transport steam into the heat exchanger body 41. The water outlet pipe 43 is located at the bottom of the first tank 1 and is connected to the heat exchanger body 41, used to discharge the condensate after heat exchange, ensuring that steam and medium flow in their respective channels to achieve efficient heat exchange.
[0031] Additionally, refer to Figure 1-2 The first tank 1 is also equipped with a liquid level sensor 5. When the medium to be heated input through the first connecting pipe 11 is a liquid medium, the liquid level sensor 5 can monitor the liquid level in the first tank 1 to prevent excessive liquid medium in the first tank 1 from flowing from the second connecting pipe 12 to the second tank 2, thus ensuring stable operation of the equipment.
[0032] Reference Figure 1-2 The second tank 2 has a drain pipe 21 at its bottom, with a drain valve 22 installed on it. The drain pipe 21 is used to discharge the condensate inside the second tank 2. Additionally, the drain pipe 21 can also lead to a recovery device to recover the condensate and reduce waste. The second tank 2 has a steam output pipe 23 at its top for outputting high-temperature steam after heat treatment. A mist eliminator 24 is also installed inside the second tank 2, located near the opening of the steam output pipe 23. The mist eliminator 24 removes tiny droplets and fine particles that cannot settle by gravity from the high-temperature steam, ensuring the purity of the steam outlet.
[0033] Working Principle: During operation, the medium to be heated enters the first tank 1 through the first connecting pipe 11. During this process, the medium passes through a pressure reducing valve and a flow regulating valve in sequence. These two valves work together to regulate the inlet pressure of the medium, thus stabilizing the internal pressure of the first tank 1. The heat exchange assembly 4 heats the medium in the first tank 1 into high-temperature steam. The high-temperature steam enters the second tank 2 through the second connecting pipe 12. During this process, the high-temperature steam passes through a constant pressure valve, which regulates the pressure inside the first tank 1 to maintain a constant heating amount. The high-temperature steam medium is discharged from the steam output pipe 23 at the top of the second tank 2, while the condensate formed is discharged from the drain pipe 21 at the bottom of the second tank 2.
[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A constant pressure steam heater, characterized in that, include: The first tank (1) is equipped with a heat exchange assembly (4) inside. The side wall of the first tank (1) is provided with a first connecting pipe (11) and a second connecting pipe (12). The first connecting pipe (11) is close to the lower end of the first tank (1), and the second connecting pipe (12) is close to the upper end of the first tank (1). The second tank (2) is connected to the first tank (1) through the second connecting pipe (12); The pressure regulating assembly (3) includes a first control valve (31), a second control valve (32) and a third control valve (33). The first control valve (31) and the second control valve (32) are disposed on the first connecting pipe (11), and the third control valve (33) is disposed on the second connecting pipe (12).
2. A constant pressure steam heater according to claim 1, characterized in that, The first connecting pipe (11) is used to input the medium to be heated, and the second connecting pipe (12) is used to output the steam medium.
3. A constant pressure steam heater according to claim 1, characterized in that, The first control valve (31) is a pressure reducing valve, the second control valve (32) is a flow regulating valve, and the third control valve (33) is a constant pressure valve. The first control valve (31) and the second control valve (32) are sequentially arranged on the first connecting pipe (11) along the input direction of the medium to be heated.
4. A constant pressure steam heater according to claim 1, characterized in that, A liquid level sensor (5) is installed inside the first tank (1).
5. A constant pressure steam heater according to claim 1, characterized in that, The heat exchange assembly (4) includes a heat exchanger body (41), a steam inlet pipe (42) and a water outlet pipe (43). The steam inlet pipe (42) is located at the top of the first tank (1), and the water outlet pipe (43) is located at the bottom of the first tank (1).
6. A constant pressure steam heater according to claim 5, characterized in that, The first tank (1) and the heat exchange assembly (4) are not connected to each other. The steam inlet pipe (42) is connected to the heat exchanger body (41), and the water outlet pipe (43) is connected to the heat exchanger body (41).
7. A constant pressure steam heater according to claim 1, characterized in that, The bottom of the second tank (2) is provided with a drain pipe (21), and a drain valve (22) is provided on the drain pipe (21). The top of the second tank (2) is provided with a steam output pipe (23).
8. A constant pressure steam heater according to claim 1, characterized in that, The second tank (2) is equipped with a mist eliminator (24), which is located near the opening of the steam output pipe (23).