A new negative pressure thermal oxygen-removing water preparation device
By creating a negative pressure zone in the deaerator through a circulating water ejector system, steam is drawn into the circulating water, solving the problem of steam escape from the deaerator, achieving energy saving, consumption reduction and environmental protection, and simplifying the transformation process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI XINHAI CHEM GRP CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-06-26
Smart Images
Figure CN224411477U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of deoxygenated water preparation technology, and in particular to a novel negative pressure thermal deoxygenated water preparation device. Background Technology
[0002] With the vigorous development of my country's social productivity and the steady progress of industrialization and modernization, the construction of industrial production infrastructure has become more important than ever before. Against this backdrop, deaerators—a cornerstone piece of equipment in industrial production—are of paramount importance.
[0003] However, energy-saving retrofitting of existing deaerator devices is particularly critical and urgent. Traditional thermal deaerators deaerate by heating steam to 104 degrees Celsius and boiling. The deaerator is connected to the atmosphere, and the steam released when the deaerator boils is directly discharged into the atmosphere, causing thermal pollution and waste of water resources. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a novel negative pressure thermal deoxygenation water preparation device, which solves the critical and urgent problem of energy-saving transformation in existing deaerator devices. Traditional thermal deaerators deoxygenate by heating steam to 104 degrees Celsius and boiling. The deaerator is connected to the atmosphere, and the steam released during boiling is directly discharged into the atmosphere, causing environmental thermal pollution and water waste.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A novel negative pressure thermal deoxygenated water preparation device includes a deaerator, a circulating water ejector system, and a circulating water pump. The deaerator and the circulating water ejector system are connected by a first delivery pipeline. The delivery pipeline includes two first connecting pipes, a first gate valve, a first regulating valve, and a first check valve. The first gate valve and the first check valve are both connected to the first connecting pipes via pipe joints. The two first connecting pipes are respectively connected to the deaerator and the circulating water ejector system. The circulating water ejector system and the circulating water pump are connected by a second delivery pipeline. The second delivery pipeline includes two second connecting pipes, a second gate valve, a second regulating valve, and a figure-eight blind flange. The second gate valve, the second regulating valve, and the figure-eight blind flange are connected to the outer surface of the two second connecting pipes. The two second connecting pipes are respectively connected to the outer surface of the circulating water ejector system and the circulating water pump.
[0007] Preferably, both the circulating water ejector system and the outer surface of the circulating water pump are connected to an output pipe network.
[0008] Preferably, the deaerator has a vent at its upper end.
[0009] Preferably, a breather valve is connected to one end of the outer surface of the deaerator near the vent.
[0010] Preferably, a demineralized water inlet pipe is connected to the side of the deaerator's outer surface away from the circulating water pump.
[0011] Preferably, a low-pressure steam inlet pipe is connected to the side of the outer surface of the deaerator close to the demineralized water inlet pipe, and the low-pressure steam inlet pipe is located at the lower end of the demineralized water inlet pipe.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] I. The circulating water ejector system utilizes Bernoulli's principle. When high-speed fluid enters the ejector system, a negative pressure zone is created through the nozzles and expansion chamber. The steam vent is connected to this negative pressure zone, thus drawing steam into the ejector system. Using circulating water as a power source, the circulating water forms a low-pressure zone as it passes through the nozzles inside the ejector system. This draws the vented steam from the deaerator into the circulating water through pipe connections, where it mixes thoroughly, cools, and condenses into water, thus replenishing the circulating water system. Simultaneously, the suction effect of the circulating water ejector system reduces the absolute pressure of the deaerator from 120 kPa to 90 kPa, and the boiling point of water also drops from 104℃ to 96℃ (the 90 kPa absolute pressure is an estimate; actual values can be adjusted based on the deaerator design parameters), saving significant amounts of water and steam energy.
[0014] Second, the circulating water ejector system has a simple structure that is not easily damaged and is easy to modify. Compared with the original process, the cost of introducing circulating water and adding a circulating water ejector system is low, and the cost can be recovered quickly, creating benefits. Attached Figure Description
[0015] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0016] Figure 1 This is a flowchart illustrating the structure of this utility model.
[0017] Legend: 11. Deaerator; 12. Circulating water ejector system; 13. Circulating water pump; 14. Output pipeline; 15. Vent port; 16. Breather valve; 17. Demineralized water inlet pipe; 18. Low-pressure steam inlet pipe. Detailed Implementation
[0018] This application provides a novel negative pressure thermal deoxygenated water preparation device, which effectively addresses the critical and urgent need for energy-saving retrofitting of existing deaerator devices. Traditional thermal deaerators deoxygenate by heating steam to 104 degrees Celsius and boiling. The deaerator is connected to the atmosphere, and the steam released during boiling is directly discharged into the atmosphere, causing environmental thermal pollution and water waste. The circulating water ejector system utilizes Bernoulli's principle to create a negative pressure area through nozzles and expansion chambers when high-speed fluid enters the ejector system. The steam vent is connected to the expansion negative pressure area, thereby attracting steam into the ejector system. Using circulating water as a power source, the circulating water forms a low-pressure zone as it passes through the nozzles inside the jet system. The vented steam from the deaerator is drawn into the circulating water through a pipeline connection, where it is thoroughly mixed, cooled, and condensed into water, thus replenishing the circulating water system. At the same time, the suction effect of the circulating water jet system reduces the absolute pressure of the deaerator from 120 kPa to 90 kPa, and the boiling point of water also drops from 104℃ to 96℃ (the absolute pressure of 90 kPa is an estimated value; the actual value can be adjusted with reference to the deaerator design parameters), saving a significant amount of water and steam energy consumption.
[0019] Example
[0020] like Figure 1As shown, the technical solution in this application embodiment effectively addresses the critical and urgent need for energy-saving retrofitting of existing deaerator devices. Traditional thermal deaerators deoxygenate by heating steam to 104 degrees Celsius and boiling. The deaerator is connected to the atmosphere, and the steam released during boiling is directly discharged into the atmosphere, causing environmental thermal pollution and water waste. The overall concept is as follows: A novel negative pressure thermal deoxygenated water preparation device includes a deaerator 11, a circulating water ejector system 12, and a circulating water pump 13. The deaerator 11 and the circulating water... The ejector systems 12 are connected via a first delivery pipeline, which includes two first connecting pipes, a first gate valve, a first regulating valve, and a first check valve. The first gate valve and the first check valve are both connected to the first connecting pipes via pipe fittings. The two first connecting pipes are respectively connected to the deaerator 11 and the circulating water ejector system 12. The circulating water ejector system 12 and the circulating water pump 13 are connected via a second delivery pipeline, which includes two second connecting pipes, a second gate valve, a second regulating valve, and a figure-eight blind flange. The second gate valve, the second regulating valve, and the figure-eight blind flange are connected... Two second connecting pipes are connected to the outer surfaces of the circulating water ejector system 12 and the circulating water pump 13, respectively. Both the circulating water ejector system 12 and the circulating water pump 13 are connected to an output pipe network 14. A vent 15 is provided at the upper end of the deaerator 11. The circulating water ejector system 12 utilizes Bernoulli's principle to create a negative pressure zone through the nozzle and expansion chamber when high-speed fluid enters the ejector system. The steam vent 15 is connected to this negative pressure zone, thereby attracting steam into the ejector system, using circulating water as the power source. When the circulating water passes through the nozzles inside the jet system, a low-pressure zone is formed. The vented steam from the deaerator 11 is drawn into the circulating water through the pipeline connection, where it is fully mixed with the circulating water, cooled, and condensed into water, thus replenishing the circulating water system. At the same time, the suction effect of the circulating water ejector system 12 reduces the absolute pressure of the deaerator 11 from 120 kPa to 90 kPa, and the boiling point of water also drops from 104℃ to 96℃ (the absolute pressure of 90 kPa is an estimated value, and the actual value can be adjusted with reference to the design parameters of the deaerator 11), saving a lot of water and steam energy consumption.
[0021] A breather valve 16 is connected to one end of the deaerator 11 near the vent 15. After being pressurized by the circulating water pump 13, the circulating water carries kinetic energy as a power source into the circulating water ejector system 12. When passing through the nozzles inside the circulating water ejector system 12, a negative pressure area is created using Bernoulli's principle, connecting the steam vent point of the deaerator 11 to the negative pressure chamber of the ejector system, thereby attracting the vented steam into the circulating water. The ejection amplitude of the circulating water is controlled by the regulating valves for the vented steam to the circulating water ejector system 12 and the outlet regulating valve of the circulating water pump 13, thereby controlling the pressure of the deaerator 11 to be appropriately lowered, reducing the boiling point of the demineralized water, and reducing the amount of deoxygenated steam used. A breather valve 16 is added to the top of the deaerator 11 to ensure that the pressure of the deaerator 11 is not too high or too low, preventing damage to the deaerator 11 due to excessive negative pressure. The vented steam is recovered by circulating water ejector steam, saving water resources. The negative pressure generated by the ejector effect of the circulating water ejector system 12 appropriately reduces the internal pressure of the deaerator 11, lowers the boiling point of water and the partial pressure of oxygen in the deaerator 11, improves the deoxygenation effect, and reduces the steam energy consumption required to add water to boiling point for deoxygenation. Moreover, the circulating water ejector system 12 has a simple structure and is not easily damaged, and is easy to modify. Compared with the original process, the cost of introducing circulating water and adding the circulating water ejector system 12 is low, and the cost can be quickly recovered, creating benefits.
[0022] A demineralized water inlet pipe 17 is connected to the side of the outer surface of the deaerator 11 away from the circulating water pump 13. A low-pressure steam inlet pipe 18 is connected to the side of the outer surface of the deaerator 11 close to the demineralized water inlet pipe 17. The low-pressure steam inlet pipe 18 is located at the lower end of the demineralized water inlet pipe 17. Low-pressure steam enters the bottom of the deaerator 11 from the low-pressure steam inlet pipe 18, and after contacting the demineralized water in the equipment, it is discharged to the atmosphere from the top vent 15. Demineralized water is sprayed into the deaerator 11 from the top, and after fully contacting the steam in the opposite direction, it is discharged from the bottom of the deaerated water tank.
[0023] To address the problems existing in the prior art, this utility model provides a novel negative pressure thermal deoxygenated water preparation device. The circulating water ejector system 12 utilizes Bernoulli's principle, creating a negative pressure zone through nozzles and an expansion chamber when high-speed fluid enters the ejector system. The steam vent 15 is connected to this negative pressure zone, thereby drawing steam into the ejector system. Using circulating water as a power source, the circulating water forms a low-pressure zone as it passes through the nozzles inside the ejector system. The vented steam from the deaerator 11 is drawn into the circulating water through a pipeline connection, where it mixes thoroughly, cools, and condenses into water, thus replenishing the circulating water system. Simultaneously, the suction effect of the circulating water ejector system 12 reduces the absolute pressure of the deaerator 11 from 120 kPa to 90 kPa, and the boiling point of water also decreases from 104°C to 96°C (the absolute pressure of 90 kPa is an estimated value; actual values can be adjusted based on the design parameters of the deaerator 11), saving significant amounts of water and steam energy.
[0024] Working principle:
[0025] In the first step, low-pressure steam enters the bottom of deaerator 11 through low-pressure steam inlet pipe 18, comes into contact with the demineralized water inside the equipment, and is then discharged to the atmosphere through top vent 15. Demineralized water is sprayed into deaerator 11 from the top, comes into full counter-current contact with the steam, and is then discharged from the bottom of deaerated water tank.
[0026] In the second step, after being pressurized by the circulating water pump 13, the circulating water carries kinetic energy as a power source and enters the circulating water ejector system 12. When passing through the nozzles inside the circulating water ejector system 12, a negative pressure area is formed using Bernoulli's principle, connecting the steam venting point of the deaerator 11 to the negative pressure chamber of the ejector system, thereby attracting the vented steam into the circulating water. The ejection amplitude of the circulating water is controlled by the regulating valves for vented steam to the circulating water ejector system 12 and the outlet regulating valve of the circulating water pump 13, thereby controlling the pressure of the deaerator 11 to be appropriately lowered, reducing the boiling point of the demineralized water, and reducing the amount of deoxygenated steam used. A breather valve 1 is added to the top of the deaerator 11. 6. Ensure that the pressure of deaerator 11 is not too high or too low, and prevent damage to deaerator 11 due to excessive negative pressure. The vented steam is recovered by circulating water ejector steam, saving water resources. The negative pressure generated by the ejector effect of circulating water ejector system 12 appropriately reduces the internal pressure of deaerator 11, lowers the boiling point of water and the partial pressure of oxygen in deaerator 11, improves the deoxygenation effect, and reduces the steam energy consumption required for adding water to boiling point for deoxygenation. Moreover, the circulating water ejector system 12 has a simple structure and is not easily damaged. It is easy to modify. Compared with the original process, the cost of introducing circulating water and adding circulating water ejector system 12 is low, and the cost can be quickly recovered, creating benefits.
[0027] The third step involves the circulating water ejector system 12 utilizing Bernoulli's principle. When high-speed fluid enters the ejector system, a negative pressure zone is formed through the nozzles and expansion chamber. The steam vent 15 is connected to the expansion negative pressure zone, thereby attracting steam into the ejector system. Circulating water is used as the power source. When the circulating water passes through the nozzles inside the ejector system, a low-pressure zone is formed. The vent steam from the deaerator 11 is drawn into the circulating water through a pipeline connection, where it is fully mixed, cooled, and condensed into water, thus replenishing the circulating water system. At the same time, the suction effect of the circulating water ejector system 12 reduces the absolute pressure of the deaerator 11 from 120 kPa to 90 kPa, and the boiling point of water also drops from 104℃ to 96℃ (the absolute pressure of 90 kPa is an estimated value; the actual value can be adjusted with reference to the design parameters of the deaerator 11), saving a significant amount of water and steam energy consumption.
[0028] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A novel negative pressure thermal deoxygenated water preparation device, comprising a deaerator (11), a circulating water ejector system (12), and a circulating water pump (13), characterized in that, The deaerator (11) and the circulating water ejector system (12) are connected by a first delivery pipeline, which includes two first connecting pipes, a first gate valve, a first regulating valve and a first check valve. The first gate valve and the first check valve are connected to the first connecting pipes through pipe joints. The two first connecting pipes are respectively connected to the deaerator (11) and the circulating water ejector system (12). The circulating water ejector system (12) and the circulating water pump (13) are connected by a second delivery pipeline, which includes two second connecting pipes, a second gate valve, a second regulating valve and a figure-eight blind flange. The second gate valve, the second regulating valve and the figure-eight blind flange are connected to the outer surfaces of the two second connecting pipes, and the two second connecting pipes are respectively connected to the outer surfaces of the circulating water ejector system (12) and the circulating water pump (13).
2. The novel negative pressure thermal deoxygenated water preparation device as described in claim 1, characterized in that, Both the circulating water ejector system (12) and the circulating water pump (13) have an output pipe network (14) connected to their outer surfaces.
3. The novel negative pressure thermal deoxygenated water preparation device as described in claim 2, characterized in that, The deaerator (11) has an vent (15) at its upper end.
4. The novel negative pressure thermal deoxygenated water preparation device as described in claim 3, characterized in that, A breathing valve (16) is connected to one end of the outer surface of the deaerator (11) near the vent (15).
5. The novel negative pressure thermal deoxygenated water preparation device as described in claim 4, characterized in that, The deaerator (11) has a demineralized water inlet pipe (17) connected to the side of its outer surface away from the circulating water pump (13).
6. The novel negative pressure thermal deoxygenated water preparation device as described in claim 5, characterized in that, The deaerator (11) has a low-pressure steam inlet pipe (18) connected to the side of its outer surface near the demineralized water inlet pipe (17). The low-pressure steam inlet pipe (18) is located at the lower end of the demineralized water inlet pipe (17).