High-temperature steam generating device based on corrosion test
By using a three-stage heating structure and a multi-thermocouple monitoring system, combined with a water chemistry tank and cooling components, the problems of uneven heating and real-time monitoring in corrosion tests of high-temperature steam generators were solved, achieving an efficient experimental process and improved device durability.
Patent Information
- Application Number
- CN202422991864.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-05
AI Technical Summary
Existing high-temperature steam generators suffer from uneven heating, large temperature differences, long heating times, and the inability to monitor temperature, pressure, and gas composition changes in real time during corrosion tests, resulting in low experimental efficiency.
It adopts a three-stage heating structure and multiple thermocouple monitoring systems, combined with a water chemistry tank and cooling components, to achieve uniform heating of water vapor and real-time temperature and pressure monitoring. The dissolved oxygen content is regulated by an oxygen controller, and Inconel 625 alloy material is used to improve corrosion resistance.
Uniform heating of water vapor was achieved, shortening the heating time, improving experimental efficiency, ensuring the accuracy of experimental data, and enabling real-time monitoring of temperature and pressure, thus extending the service life of the device.
Smart Images
Figure CN223537614U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of steam generating devices, specifically to a high-temperature steam generating device based on corrosion testing. Background Technology
[0002] A high-temperature steam generator is a device that uses a heat source to heat water to a high temperature and convert it into steam. Its main purpose is to generate high-temperature steam in industrial, scientific research, and some special application scenarios. A high-temperature steam corrosion test is an experiment that uses a high-temperature steam generator to simulate the corrosion process of materials or equipment exposed to water vapor in a high-humidity environment. Its main purpose is to evaluate the corrosion resistance of materials, coatings, components, or systems under water vapor and humid conditions.
[0003] The existing technology still has the following areas for improvement: the existing high-temperature steam generators based on corrosion tests generally heat water vapor to the set temperature directly in the test vessel, which will cause uneven heating of water vapor in the test vessel, large temperature difference, and excessive heating time, thus reducing experimental efficiency. Furthermore, it is impossible to monitor the temperature and pressure of water vapor or change the gas composition in real time when conducting high-temperature steam corrosion tests. Utility Model Content
[0004] To address the aforementioned problems in the existing technology, this utility model provides a high-temperature steam generator based on corrosion testing. It can achieve uniform heating of water vapor in the test vessel to a preset temperature through three-stage heating, shortening the heating time required in the test vessel and improving experimental efficiency. The device can monitor the temperature and pressure of the water vapor in real time and can adjust the gas composition.
[0005] The objective of this utility model can be achieved through the following technical solutions:
[0006] A high-temperature steam generator based on corrosion testing includes an aqueous chemical tank, a heating assembly, and a cooling assembly. The aqueous chemical tank is equipped with a foamer and an oxygen controller.
[0007] The heating assembly includes a primary heating furnace, a secondary heating furnace, and a test vessel. The inlet of the primary heating furnace is connected to the outlet pipe of the water chemical tank. A first thermocouple is installed inside the primary heating furnace. The outlet of the primary heating furnace is connected to the inlet pipe of the secondary heating furnace. Multiple second thermocouples are installed inside the secondary heating furnace. The outlet of the secondary heating furnace is connected to the inlet pipe of the test vessel. Multiple third thermocouples are installed inside the test vessel.
[0008] The cooling assembly includes a heat exchanger and a cooler. The inlet of the heat exchanger is connected to the outlet pipe of the test vessel, the outlet of the heat exchanger is connected to the inlet pipe of the cooler, and the outlet of the cooler is connected to the inlet pipe of the water chemical tank.
[0009] Preferably, a metering pump is installed on the pipeline connecting the water chemical tank and the primary heating furnace.
[0010] Preferably, the interior of the primary heating furnace is configured with a spiral tube.
[0011] Preferably, a first pipe thermocouple is installed in the outlet pipe of the primary heating furnace, and the pipe connecting the primary heating furnace and the secondary heating furnace is an insulated pipe.
[0012] Preferably, the secondary heating furnace uses 625 pipes, and multiple second thermocouples are located in the upper, middle and lower parts of the secondary heating furnace, respectively.
[0013] Preferably, a second pipe thermocouple is installed in the outlet pipe of the secondary heating furnace, and the pipe connecting the secondary heating furnace and the test vessel is an insulated pipe.
[0014] Preferably, a fourth thermocouple is provided on the outer wall of the test vessel.
[0015] Preferably, the cooler has an inlet and an outlet on one side, and a third pipe thermocouple is installed in both the inlet pipe connecting the cooler to the heat exchanger and the outlet pipe connecting the cooler to the water chemical tank.
[0016] The beneficial effects of this utility model are as follows:
[0017] (1) By setting up a water chemical tank, the technical effect that can be achieved is that the water chemical tank is equipped with a foamer and an oxygen controller. The oxygen controller adjusts the dissolved oxygen content in the water by adjusting the ratio of nitrogen and oxygen. The foamer continuously injects air bubbles into the water tank to accelerate gas dissolution, thereby adjusting the dissolved oxygen concentration more quickly. A metering pump is installed on the pipeline connecting the water chemical tank and the primary heating furnace to facilitate the control of the water flow.
[0018] (2) By setting up heating components, the technical effect that can be achieved is that by setting up three-stage heating, the water vapor in the test vessel can be uniformly heated to the preset temperature, ensuring that there is no obvious temperature difference in the experimental environment, improving the accuracy of corrosion test data, shortening the time required for water vapor to be heated in the test vessel, and improving experimental efficiency. The first-stage heating furnace is set with a spiral tube to facilitate increasing the heat exchange area and improving heating efficiency. The second-stage heating furnace uses 625 pipes. Inconel 625 alloy has good corrosion resistance and high temperature performance. A fourth thermocouple is set on the outer wall of the test vessel to facilitate real-time monitoring of the wall temperature of the test vessel and avoid excessively high temperature in the test vessel, which would reduce the service life of the test vessel.
[0019] (3) By setting up cooling components and heating components, the technical effect that can be achieved is to enable the water to be cooled down sufficiently by setting up secondary cooling, so as to avoid the water temperature being too high and affecting the equipment in the water chemical tank. By setting up the first thermocouple, the second thermocouple, the third thermocouple, the first pipeline thermocouple, the second pipeline thermocouple and the third pipeline thermocouple, it is convenient to monitor the temperature of water vapor and water inside the device in real time, to ensure that the water vapor reaches the preset temperature at each stage of heating, to ensure the smooth operation of the device, and to ensure that the water enters the water chemical tank only after cooling down. Attached Figure Description
[0020] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.
[0021] Figure 1 This is a schematic diagram of the water vapor generation cycle of the device of the present invention;
[0022] Explanation of key component symbols:
[0023] In the diagram: 1. Water chemistry tank; 2. Primary heating furnace; 3. First thermocouple; 4. First pipeline thermocouple; 5. Secondary heating furnace; 6. Second thermocouple; 7. Second pipeline thermocouple; 8. Test vessel; 9. Third thermocouple; 10. Fourth thermocouple; 11. Heat exchanger; 12. Cooler; 13. Third pipeline thermocouple; 14. Metering pump. Detailed Implementation
[0024] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0025] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0027] Reference Figure 1 The present invention discloses a high-temperature steam generating device based on corrosion test, characterized in that: it includes a water chemical tank 1, a heating component and a cooling component. The water chemical tank 1 is equipped with a foamer and an oxygen controller. The oxygen controller adjusts the dissolved oxygen content in the water by adjusting the ratio of nitrogen and oxygen. The foamer continuously injects air bubbles into the tank to accelerate gas dissolution, thereby adjusting the dissolved oxygen concentration more quickly.
[0028] The heating assembly includes a primary heating furnace 2, a secondary heating furnace 5, and a test vessel 8. The inlet of the primary heating furnace 2 is connected to the outlet pipe of the water chemical tank 1. A first thermocouple 3 is installed inside the primary heating furnace 2. The outlet of the primary heating furnace 2 is connected to the inlet pipe of the secondary heating furnace 5. Multiple second thermocouples 6 are installed inside the secondary heating furnace 5. The outlet of the secondary heating furnace 5 is connected to the inlet pipe of the test vessel 8. Multiple third thermocouples 9 are installed inside the test vessel 8.
[0029] By setting up three-stage heating, the water vapor in the test vessel 8 can be uniformly heated to the preset temperature, ensuring that there is no significant temperature difference in the experimental environment, improving the accuracy of corrosion test data, shortening the time required for water vapor to heat in the test vessel 8, and improving experimental efficiency.
[0030] The cooling assembly includes a heat exchanger 11 and a cooler 12. The inlet of the heat exchanger 11 is connected to the outlet pipe of the test vessel 8, the outlet of the heat exchanger 11 is connected to the inlet pipe of the cooler 12, and the outlet of the cooler 12 is connected to the inlet pipe of the water chemical tank 1. By setting up secondary cooling, the water can be cooled down sufficiently to avoid the water temperature being too high and affecting the equipment in the water chemical tank 1.
[0031] Reference Figure 1 A metering pump 14 is installed on the pipeline connecting the water chemical tank 1 and the primary heating furnace 2 to facilitate control of the water flow. The primary heating furnace 2 is internally designed with a spiral tube to increase the heat exchange area and improve heating efficiency. A first pipe thermocouple 4 is installed in the outlet pipeline of the primary heating furnace 2. The pipeline connecting the primary heating furnace 2 and the secondary heating furnace 5 is an insulated pipeline to prevent water vapor from cooling down due to external temperature. The secondary heating furnace 5 uses 625 pipes. Inconel 625 alloy has good corrosion resistance and high-temperature performance. In this embodiment, a 0.7L diameter 625 pipe is used. Multiple second thermocouples 6 are located in the upper, middle and lower parts of the secondary heating furnace 5, respectively. A second pipe thermocouple 7 is installed in the outlet pipeline of the secondary heating furnace 5. The pipeline connecting the secondary heating furnace 5 and the test vessel 8 is an insulated pipeline to prevent water vapor from cooling down due to external temperature. A fourth thermocouple 10 is installed on the outer wall of the test vessel 8 to facilitate real-time monitoring of the wall temperature of the test vessel 8 and to prevent the temperature inside the test vessel 8 from becoming too high, which would reduce the service life of the test vessel 8.
[0032] Reference Figure 1 A water inlet and a water outlet are provided on one side of the cooler 12. A third pipe thermocouple 13 is provided in the inlet pipe connecting the cooler 12 to the heat exchanger 11 and in the outlet pipe connecting the cooler 12 to the water chemical tank 1.
[0033] By setting up a first thermocouple 3, a second thermocouple 6, a third thermocouple 9, a first pipe thermocouple 4, a second pipe thermocouple 7, and a third pipe thermocouple 13, it is convenient to monitor the temperature of water vapor and water inside the device in real time, ensuring that the water vapor reaches the preset temperature at each heating stage, guaranteeing the smooth operation of the device, and ensuring that the water enters the water chemical tank 1 only after cooling down, thus avoiding any impact on the equipment inside the water chemical tank 1.
[0034] The working principle and usage process of this utility model are as follows: The dissolved oxygen content in the water is adjusted by using the oxygen controller in the water chemistry tank 1 in conjunction with the foamer. After adjustment, the water is introduced into the primary heating furnace 2. During the introduction, the flow rate of the water is controlled by the metering pump 14. During the experiment, the water continuously circulates in the entire device. If it is necessary to adjust the dissolved oxygen content in the water, the oxygen controller in the water chemistry tank 1 can be used for adjustment.
[0035] The water undergoes primary heating in the primary heating furnace 2. The temperature and pressure of the steam are monitored by thermocouples 4 and 3 in the first pipeline, ensuring that the steam reaches a temperature of 300°C when it passes through the outlet pipe of the primary heating furnace 2. The steam then enters the secondary heating furnace 5 for secondary heating. The temperature and pressure of the steam are monitored by thermocouples 7 in the second pipeline, along with the upper, middle, and lower thermocouples 6 in the secondary heating furnace 5, ensuring that the steam reaches a temperature of 600°C when it passes through the outlet pipe of the secondary heating furnace 5. The steam then enters the test vessel 8 for tertiary heating. The steam is heated to 750°C in the test vessel 8 to reach the required ambient temperature for corrosion testing. The ambient temperature and pressure inside the test vessel 8 are monitored by thermocouple 9 in the third pipeline, and the wall temperature of the test vessel 8 is monitored by thermocouple 10 in the fourth pipeline, to prevent the temperature inside the test vessel 8 from becoming too high and reducing its service life.
[0036] After the experiment, water vapor is introduced from the test vessel 8 into the heat exchanger 11 for cooling, and then from the heat exchanger 11 into the cooler 12 for secondary cooling. The temperature and pressure of the cooled water are monitored by the third pipe thermocouple 13. After the water is cooled, it is introduced from the cooler 12 into the return water chemical water tank 1 for recycling.
[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A high-temperature steam generator based on corrosion testing, characterized in that: It includes an aquatic chemical tank (1), a heating component and a cooling component, wherein the aquatic chemical tank (1) is equipped with a foamer and an oxygen controller; The heating assembly includes a primary heating furnace (2), a secondary heating furnace (5), and a test vessel (8). The inlet of the primary heating furnace (2) is connected to the outlet pipe of the water chemical tank (1). A first thermocouple (3) is installed inside the primary heating furnace (2). The outlet of the primary heating furnace (2) is connected to the inlet pipe of the secondary heating furnace (5). A plurality of second thermocouples (6) are installed inside the secondary heating furnace (5). The outlet of the secondary heating furnace (5) is connected to the inlet pipe of the test vessel (8). A plurality of third thermocouples (9) are installed inside the test vessel (8). The cooling assembly includes a heat exchanger (11) and a cooler (12). The inlet of the heat exchanger (11) is connected to the outlet pipe of the test vessel (8), the outlet of the heat exchanger (11) is connected to the inlet pipe of the cooler (12), and the outlet of the cooler (12) is connected to the inlet pipe of the water chemical tank (1).
2. The high-temperature steam generator based on corrosion testing according to claim 1, characterized in that: A metering pump (14) is installed on the pipeline connecting the water chemical tank (1) and the primary heating furnace (2).
3. The high-temperature steam generator based on corrosion testing according to claim 1, characterized in that: The interior of the primary heating furnace (2) is configured as a spiral tube.
4. The high-temperature steam generator based on corrosion testing according to claim 1, characterized in that: The outlet pipe of the primary heating furnace (2) is equipped with a first pipe thermocouple (4), and the pipe connecting the primary heating furnace (2) and the secondary heating furnace (5) is an insulated pipe.
5. A high-temperature steam generator based on corrosion testing according to claim 1, characterized in that: The secondary heating furnace (5) uses 625 pipes, and multiple second thermocouples (6) are located in the upper, middle and lower parts of the secondary heating furnace (5).
6. A high-temperature steam generator based on corrosion testing according to claim 1, characterized in that: The outlet pipe of the secondary heating furnace (5) is equipped with a second pipe thermocouple (7), and the pipe connecting the secondary heating furnace (5) and the test vessel (8) is an insulated pipe.
7. A high-temperature steam generator based on corrosion testing according to claim 1, characterized in that: A fourth thermocouple (10) is provided on the outer wall of the test vessel (8).
8. A high-temperature steam generator based on corrosion testing according to claim 1, characterized in that: The cooler (12) has an inlet and an outlet on one side. A third pipe thermocouple (13) is provided in the inlet pipe connecting the cooler (12) to the heat exchanger (11) and in the outlet pipe connecting the cooler (12) to the water chemical tank (1).