Ultrapure water nitrogen sealing multifunctional water sealing device
By installing baffles and connecting pipes in the nitrogen-sealed water tank, a physical water seal is formed, enabling automatic water replenishment and overflow. This solves the problems of complex control and failure risk of nitrogen-sealed water tanks, and improves the reliability and safety of use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN ZHUOSHUIYUE MEDICAL TECH CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-04-21
AI Technical Summary
Existing nitrogen-sealed water tanks require high precision in liquid level and gas pressure control, which is complex and costly, and poses a risk of failure. When the liquid level sensor fails, it is prone to overpressure and rupture, and the lack of an overflow device leads to water leakage.
The cylinder is divided into upper and lower spaces by internal partitions, and is equipped with connecting pipes, water seal inlet, nitrogen seal tank connection port, overflow pipe and nitrogen discharge pipe to form a physical water seal. Nitrogen is naturally discharged through the physical water seal, and water is automatically replenished and overflowed, simplifying control and providing negative pressure protection.
It achieves stable and reliable use without precise control of liquid level and gas pressure, prevents deformation and leakage of nitrogen-sealed water tanks, solves the problems of liquid level sensor failure and lack of overflow device, and improves the reliability and safety of use.
Smart Images
Figure CN224150228U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of water sealing devices, specifically to a multifunctional water sealing device for ultrapure water nitrogen sealing. Background Technology
[0002] Ultrapure water, due to its extremely high purity, is difficult to store. Once exposed to air, CO2 and impurities in the air readily dissolve into the ultrapure water. Therefore, it is essential to minimize contact between ultrapure water and air. Containers typically employ nitrogen-sealed tanks, where nitrogen gas is introduced onto the water surface to maintain a suitable positive pressure inside the tank, preventing atmospheric contact with the water surface. Nitrogen-sealed tanks generally consist of a nitrogen supply valve, a nitrogen release valve, and a breather valve. When the tank inlet is opened, the ultrapure water level rises, the gas phase volume decreases, and the pressure increases. When the pressure inside the tank rises above the nitrogen release valve's pressure setpoint, the nitrogen release valve opens, releasing nitrogen gas to the outside, causing the pressure inside the tank to drop. When the pressure drops to the nitrogen release valve's setpoint, it automatically closes. Conversely, when the tank outlet valve opens, the ultrapure water level drops, the gas phase volume increases, and the pressure inside the tank decreases. The nitrogen supply valve opens, injecting nitrogen gas into the tank, causing the pressure inside the tank to rise. When the pressure reaches the nitrogen supply valve's setpoint, it automatically closes. This nitrogen-sealed water tank requires extremely high precision in controlling liquid level and gas pressure, making control particularly complex and costly. There is also a risk of malfunction later on, leading to negative pressure deformation or leakage. Furthermore, due to the use of nitrogen supply and release valves, if the liquid level sensor fails, the lack of an overflow device makes the tank prone to overpressure and rupture. Utility Model Content
[0003] The purpose of this invention is to provide a multifunctional water sealing device for nitrogen sealing of ultrapure water, in order to solve at least one of the aforementioned problems existing in the prior art.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A multifunctional water sealing device for nitrogen sealing of ultrapure water includes a cylindrical body, a partition inside the cylindrical body dividing the cylindrical body into an upper space and a lower space, and a connecting pipe on the partition connecting the upper space and the lower space.
[0006] The upper end of the cylinder is provided with a nitrogen sealing water tank connection port, a nitrogen inlet valve and a negative pressure prevention valve that communicate with the space above. The nitrogen sealing water tank connection port is connected to the side connection port on the nitrogen sealing water tank through an external pipe. The nitrogen inlet valve is used to connect to the nitrogen inlet pipe. The lower end of the cylinder is provided with an overflow pipe that communicates with the space below.
[0007] The cylinder is provided with a water seal inlet that communicates with the space above, and the water seal inlet is used to connect to an ultrapure water pipeline. The cylinder is also provided with a nitrogen venting pipe that communicates with the space below.
[0008] In this technical solution, a partition divides the cylinder into an upper space and a lower space, isolating the spaces within the cylinder. A connecting pipe is installed on the partition, linking the upper and lower spaces. This connecting pipe allows for communication between the two spaces. The cylinder has a water seal inlet connected to the upper space, which is used to connect to an ultrapure water pipeline. Upon first use, a certain amount of ultrapure water is injected into the cylinder through the water seal inlet, introducing it into the upper space. When the water level in the upper space exceeds the upper end of the connecting pipe, the ultrapure water then flows through the connecting pipe into the lower space until the water level in the lower space reaches a preset standard, at which point the water supply stops. Because the upper end of the cylinder has a nitrogen-sealed water tank connection port that communicates with the upper space, and this connection port is connected to a side connection port on the nitrogen-sealed water tank via an external pipe, when the ultrapure water level in the nitrogen-sealed water tank rises, the pressure inside the tank increases. Nitrogen gas from the tank is then introduced into the upper space of the cylinder through the external pipe, and then enters the ultrapure water in the lower space through a connecting pipe. If the pressure in the lower space is too high, nitrogen gas escapes through the ultrapure water as bubbles. Since the cylinder has a nitrogen venting pipe that communicates with the lower space, the escaping nitrogen rises and is discharged through this pipe, which needs to be connected to the outside via a pipeline. This technical solution forms a physical water seal in the lower space, allowing nitrogen to be naturally discharged through the physical water seal. It eliminates the need for precise control of the liquid level and pressure in the nitrogen-sealed water tank, resulting in higher reliability. When the ultrapure water level in the nitrogen-sealed water tank drops, the pressure inside the tank decreases, requiring the addition of nitrogen. The nitrogen inlet valve connects to the nitrogen inlet pipe. After entering the upper space, the nitrogen is directly introduced into the nitrogen-sealed water tank through the connection port and external pipeline connected to the upper space until the pressure inside the tank reaches the preset value. Since the lower end of the cylinder has an overflow pipe connected to the lower space, when the ultrapure water level in the nitrogen-sealed water tank exceeds the preset value, it can be introduced into the upper space of the cylinder through the external pipeline and the nitrogen-sealed water tank connection port, then discharged into the lower space through the connecting pipe, and finally discharged through the overflow pipe. When the water level in the nitrogen-sealed water tank exceeds the limit, the excess ultrapure water can be naturally overflowed and discharged without altering the tank itself. This solves the problem of nitrogen-sealed water tanks easily rupturing due to overpressure caused by malfunctioning level sensors and the lack of an overflow device. In addition, when negative pressure is generated in the pipeline or container due to system operation or shutdown, the anti-negative pressure valve can automatically open to break the vacuum effect, preventing the nitrogen-sealed water tank from deforming or leaking, thus protecting the safety of the equipment.
[0009] In summary, this technical solution forms a physical water seal in the lower space, allowing nitrogen to be naturally discharged through this physical water seal. It eliminates the need for precise control of the liquid level gauge pressure within the nitrogen-sealed water tank, making it simple, stable, and reliable without complex control requirements. Furthermore, it solves the problems of nitrogen-sealed water tanks being prone to overpressure rupture due to malfunctioning liquid level sensors and lack of overflow devices, as well as the problems of deformation or leakage caused by malfunctions.
[0010] Furthermore, to enable automatic water replenishment to the appropriate water level, the water seal inlet is sequentially connected to a first pipe, a water level controller, and a second pipe. The first pipe is located in the upper space, while the water level controller and the second pipe are located in the lower space. The outlet of the second pipe is connected to the upper space. The water level controller can detect whether the water level in the lower space has reached a preset value, and will stop replenishing water only when the water level in the lower space reaches the preset value.
[0011] Furthermore, to improve the reliability of automatic water replenishment to the appropriate water volume, the water level controller is a float water level controller, which adopts the mechanical principle of float raising and lowering, and automatically replenishes water through pure mechanical physical means, achieving precise control of water volume without the need for a solenoid valve.
[0012] Furthermore, in order to replenish the nitrogen-sealed water tank with ultrapure water, an ultrapure water inlet is provided at the upper end of the nitrogen-sealed water tank, and the ultrapure water inlet is connected to an ultrapure water pipeline.
[0013] Furthermore, in order to achieve better connectivity, two connecting pipes are symmetrically arranged on the partition.
[0014] Furthermore, to facilitate the installation of the internal and external structures of the cylinder, the upper end of the cylinder is provided with an upper sealing end plate, the nitrogen sealing water tank connection port, the nitrogen inlet valve and the anti-negative pressure valve are provided on the upper sealing end plate, the lower end of the cylinder is provided with a lower sealing end plate, the overflow pipe is provided on the lower sealing end plate, and the upper end of the overflow pipe is connected to the space below.
[0015] Furthermore, in order to improve the structural stability of the overflow pipe, a docking seat is provided in the middle of the partition plate, and a large sleeve is coaxially connected to the docking seat. A collar is provided between the lower end of the large sleeve and the overflow pipe, and the upper end of the overflow pipe is located inside the large sleeve. The collar is provided with multiple overflow channels in the circumferential direction, and the overflow channels connect the space below and the interior of the large sleeve.
[0016] Furthermore, to facilitate later maintenance, a manual venting valve is provided on the lower sealing end plate.
[0017] Furthermore, in order to ensure the sealing effect inside the cylinder, sealing gaskets are provided between the upper sealing end plate and the lower sealing end plate and the cylinder.
[0018] Furthermore, in order to facilitate the installation of the controller and the nitrogen exhaust pipe and improve the exhaust effect, the upper sealing plate is equipped with a controller, the nitrogen exhaust pipe is an L-shaped pipe, the exhaust end of the L-shaped pipe is located at the upper part of the cylinder, and the air inlet end of the L-shaped pipe is connected to the space below.
[0019] The beneficial effects of this utility model are as follows: In this technical solution, the partition divides the cylinder into an upper space and a lower space, isolating the spaces within the cylinder. A connecting pipe is provided on the partition, connecting the upper and lower spaces. This connecting pipe allows for communication between the upper and lower spaces. Since the cylinder has a water seal inlet connected to the upper space, this inlet is used to connect to an ultrapure water pipeline. When this water seal device is used for the first time, a certain amount of ultrapure water is injected into the cylinder through the water seal inlet, introducing the ultrapure water into the upper space. When the water level in the upper space exceeds the upper end of the connecting pipe, the ultrapure water then enters the lower space through the connecting pipe until the water level in the lower space reaches a preset standard, at which point the water supply stops. Because the upper end of the cylinder has a nitrogen-sealed water tank connection port that communicates with the upper space, and this connection port is connected to a side connection port on the nitrogen-sealed water tank via an external pipe, when the ultrapure water level in the nitrogen-sealed water tank rises, the pressure inside the tank increases. Nitrogen gas from the tank is then introduced into the upper space of the cylinder through the external pipe, and then enters the ultrapure water in the lower space through a connecting pipe. If the pressure in the lower space is too high, nitrogen gas escapes through the ultrapure water as bubbles. Since the cylinder has a nitrogen venting pipe that communicates with the lower space, the escaping nitrogen rises and is discharged through this pipe, which needs to be connected to the outside via a pipeline. This technical solution forms a physical water seal in the lower space, allowing nitrogen to be naturally discharged through the physical water seal. It eliminates the need for precise control of the liquid level and pressure in the nitrogen-sealed water tank, resulting in higher reliability. When the ultrapure water level in the nitrogen-sealed water tank drops, the pressure inside the tank decreases, requiring the addition of nitrogen. The nitrogen inlet valve connects to the nitrogen inlet pipe. After entering the upper space, the nitrogen is directly introduced into the nitrogen-sealed water tank through the connection port and external pipeline connected to the upper space until the pressure inside the tank reaches the preset value. Since the lower end of the cylinder has an overflow pipe connected to the lower space, when the ultrapure water level in the nitrogen-sealed water tank exceeds the preset value, it can be introduced into the upper space of the cylinder through the external pipeline and the nitrogen-sealed water tank connection port, then discharged into the lower space through the connecting pipe, and finally discharged through the overflow pipe. When the water level in the nitrogen-sealed water tank exceeds the limit, the excess ultrapure water can be naturally overflowed and discharged without altering the tank itself. This solves the problem of nitrogen-sealed water tanks easily rupturing due to overpressure caused by malfunctioning level sensors and the lack of an overflow device. In addition, when negative pressure is generated in the pipeline or container due to system operation or shutdown, the anti-negative pressure valve can automatically open to break the vacuum effect, preventing the nitrogen-sealed water tank from deforming or leaking, thus protecting the safety of the equipment.
[0020] In summary, this technical solution forms a physical water seal in the lower space, allowing nitrogen to be naturally discharged through this physical water seal. It eliminates the need for precise control of the liquid level gauge pressure within the nitrogen-sealed water tank, making it simple, stable, and reliable without complex control requirements. Furthermore, it solves the problems of nitrogen-sealed water tanks being prone to overpressure rupture due to malfunctioning liquid level sensors and lack of overflow devices, as well as the problems of deformation or leakage caused by malfunctions. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of this utility model connected to the nitrogen-sealed water tank;
[0022] Figure 2 This is a schematic diagram of the structure of this utility model;
[0023] Figure 3 This is a cross-sectional structural diagram of the present invention;
[0024] Figure 4 This is a first-view structural diagram of the interior of this utility model;
[0025] Figure 5 This is a structural schematic diagram of the internal second perspective of this utility model;
[0026] Figure 6 This is a structural schematic diagram of the internal third-view aspect of this utility model.
[0027] In the diagram: 1. Cylinder; 2. Partition plate; 3. Connecting pipe; 4. Upper space; 5. Lower space; 6. Nitrogen sealing water tank connection port; 7. Nitrogen inlet valve; 8. Anti-negative pressure valve; 9. Nitrogen sealing water tank; 10. External pipe; 11. Side connection port; 12. Nitrogen inlet pipe; 13. Overflow pipe; 14. Water seal water supply port; 15. Ultrapure water pipe; 16. Nitrogen vent pipe; 17. First pipe; 18. Water level controller; 19. Second pipe; 20. Ultrapure water inlet; 21. Upper sealing end plate; 22. Lower sealing end plate; 23. Connecting seat; 24. Large sleeve; 25. Collar ring; 26. Overflow channel; 27. Manual vent valve; 28. Sealing gasket; 29. Controller. Detailed Implementation
[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.
[0029] Example 1:
[0030] like Figures 1-6 As shown, this embodiment provides a multi-functional water sealing device for nitrogen sealing of ultrapure water, including a cylinder 1, a partition 2 inside the cylinder 1, the partition 2 dividing the inside of the cylinder 1 into an upper space 4 and a lower space 5, and a connecting pipe 3 on the partition 2, the connecting pipe 3 connecting the upper space 4 and the lower space 5;
[0031] The upper end of the cylinder 1 is provided with a nitrogen sealing water tank connection port 6, a nitrogen inlet valve 7, and a negative pressure prevention valve 8 that communicate with the upper space 4. The nitrogen sealing water tank connection port 6 is connected to the side connection port 11 on the nitrogen sealing water tank 9 through an external pipe 10. The nitrogen inlet valve 7 is used to connect the nitrogen inlet pipe 12. The lower end of the cylinder 1 is provided with an overflow pipe 13 that communicates with the lower space 5.
[0032] The cylinder 1 is provided with a water seal inlet 14 that communicates with the upper space 4. The water seal inlet 14 is used to connect to the ultrapure water pipeline 15. The cylinder 1 is provided with a nitrogen venting pipe 16 that communicates with the lower space 5.
[0033] In this technical solution, the partition 2 divides the interior of the cylinder 1 into an upper space 4 and a lower space 5, isolating the spaces within the cylinder 1. A connecting pipe 3 is provided on the partition 2, connecting the upper space 4 and the lower space 5. The connecting pipe 3 allows for communication between the upper space 4 and the lower space 5. Since the cylinder 1 has a water seal inlet 14 connected to the upper space 4, and this inlet 14 is used to connect to an ultrapure water pipeline 15, when this water seal device is used for the first time, a certain amount of ultrapure water is injected into the cylinder 1 through the water seal inlet 14. The water seal inlet 14 introduces the ultrapure water into the upper space 4. When the water level in the upper space 4 exceeds the upper end of the connecting pipe 3, the ultrapure water then enters the lower space 5 through the connecting pipe 3 until the water level in the lower space 5 reaches a preset standard, at which point the water supply stops. Because the upper end of the cylinder 1 is equipped with a nitrogen-sealed water tank connection port 6 that communicates with the upper space 4, and the nitrogen-sealed water tank connection port 6 is connected to the side connection port 11 on the nitrogen-sealed water tank 9 via an external pipe 10, when the ultrapure water level in the nitrogen-sealed water tank 9 rises, the pressure inside the nitrogen-sealed water tank 9 increases. The nitrogen gas in the nitrogen-sealed water tank 9 is input into the upper space 4 inside the cylinder 1 through the external pipe 10, and then enters the ultrapure water in the lower space 5 through the connecting pipe 3. If the gas pressure in the lower space 5 is too high, the nitrogen gas will escape through the ultrapure water in the form of bubbles. Since the cylinder 1 is equipped with a nitrogen venting pipe 16 that communicates with the lower space 5, the escaping nitrogen gas rises and is discharged through the nitrogen venting pipe 16. The nitrogen venting pipe 16 needs to be connected to the outside through a pipeline. This technical solution forms a physical water seal in the lower space 5, and the nitrogen is naturally discharged through the physical water seal. There is no need to precisely control the liquid level and gas pressure in the nitrogen-sealed water tank 9, resulting in higher reliability. When the ultrapure water level in the nitrogen-sealed water tank 9 drops, the pressure in the nitrogen-sealed water tank 9 decreases, and nitrogen needs to be added. The nitrogen inlet valve 7 is used to connect the nitrogen inlet pipe 12. After the nitrogen enters the upper space 4, it is directly input into the nitrogen-sealed water tank 9 through the nitrogen-sealed water tank connection port 6 connected to the upper space 4 and the external pipe 10 until the pressure in the nitrogen-sealed water tank 9 reaches the preset value. Because the lower end of the cylinder 1 is equipped with an overflow pipe 13 that communicates with the lower space 5, when the ultrapure water level in the nitrogen-sealed water tank 9 exceeds the preset value, it can be input into the upper space 4 of the cylinder 1 through the external pipe 10 and the nitrogen-sealed water tank connection port 6, and then discharged into the lower space 5 through the connecting pipe 3. The excess ultrapure water is then discharged through the overflow pipe 13. When the water level in the nitrogen-sealed water tank 9 exceeds the limit, the excess ultrapure water in the nitrogen-sealed water tank 9 can be naturally overflowed and discharged without changing the nitrogen-sealed water tank 9. This solves the problem that the nitrogen-sealed water tank 9 is prone to overpressure rupture due to the failure of the liquid level sensor and the lack of an overflow device. In addition, when the pipeline or container generates negative pressure due to system operation or shutdown, the anti-negative pressure valve 8 can automatically open to break the vacuum effect, preventing the nitrogen-sealed water tank 9 from deforming or leaking, thus protecting the safety of the equipment.
[0034] In summary, this technical solution forms a physical water seal within the lower space 5, allowing nitrogen to dissipate naturally through this physical water seal. It eliminates the need for precise control of the liquid level gauge pressure within the nitrogen-sealed water tank 9, making it simple, stable, and reliable without complex control requirements. Furthermore, it solves the problems of overpressure rupture in the nitrogen-sealed water tank 9 due to malfunctioning liquid level sensors and the lack of an overflow device, as well as the issues of deformation or leakage caused by malfunctions in the nitrogen-sealed water tank 9.
[0035] Example 2:
[0036] This embodiment is an optimization based on the above embodiment 1.
[0037] To enable automatic water replenishment to the appropriate water level, the water seal inlet 14 is sequentially connected to a first pipe 17, a water level controller 18, and a second pipe 19. The first pipe 17 is located in the upper space 4, while the water level controller 18 and the second pipe 19 are located in the lower space 5. The outlet of the second pipe 19 is connected to the upper space 4. The water level controller 18 can detect whether the water level in the lower space 5 has reached a preset value, and will stop replenishing water only when the water level in the lower space 5 reaches the preset value.
[0038] Example 3:
[0039] This embodiment is an optimization based on the above embodiment 2.
[0040] To improve the reliability of automatic water replenishment to the appropriate water volume, the water level controller 18 is a float-type water level controller 18. It employs the mechanical principle of float raising and lowering for purely mechanical and physical automatic water replenishment, achieving precise water volume control without the need for a solenoid valve. Specifically, this device has a sealed structure. Upon initial use, connecting the water seal inlet 14 to the ultrapure water pipeline 15 enables automatic water replenishment. During this process, when the water level in the lower space reaches a certain height, the float of the float-type water level controller 18 rises, discontinuing the connection between the first pipeline 17 and the second pipeline 19, thereby achieving precise control of the water level dropped below.
[0041] Example 4:
[0042] This embodiment is an optimization based on the above embodiment 1.
[0043] In order to replenish ultrapure water to the nitrogen-sealed water tank 9, an ultrapure water inlet 20 is provided at the top of the nitrogen-sealed water tank 9, and the ultrapure water inlet 20 is connected to the ultrapure water pipeline 15.
[0044] Example 5:
[0045] This embodiment is an optimization based on the above embodiment 1.
[0046] In order to achieve better connectivity, two connecting pipes 3 are symmetrically arranged on the partition 2.
[0047] Example 6:
[0048] This embodiment is an optimization based on the above embodiment 1.
[0049] To facilitate the installation of the internal and external structures of the cylinder 1, the upper end of the cylinder 1 is provided with an upper sealing end plate 21, the nitrogen sealing water tank connection port 6, the nitrogen inlet valve 7 and the anti-negative pressure valve 8 are provided on the upper sealing end plate 21, the lower end of the cylinder 1 is provided with a lower sealing end plate 22, the overflow pipe 13 is provided on the lower sealing end plate 22, and the upper end of the overflow pipe 13 is connected to the lower space 5.
[0050] Example 7:
[0051] This embodiment is an optimization based on the above embodiment 6.
[0052] To improve the structural stability of the overflow pipe 13, a docking seat 23 is provided in the middle of the partition plate 2. A large sleeve 24 is coaxially connected to the docking seat 23. A collar 25 is provided between the lower end of the large sleeve 24 and the overflow pipe 13. The upper end of the overflow pipe 13 is located inside the large sleeve 24. Multiple overflow channels 26 are provided circumferentially on the collar 25. The overflow channels 26 connect the lower space 5 and the interior of the large sleeve 24.
[0053] Example 8:
[0054] This embodiment is an optimization based on the above embodiment 6.
[0055] To facilitate future maintenance, a manual drain valve 27 is provided on the lower sealing end plate 22. When maintenance is required, the water in the lower space 5 can be drained by opening the manual drain valve 27.
[0056] Example 9:
[0057] This embodiment is an optimization based on the above embodiment 6.
[0058] To ensure a good seal inside the cylinder 1, sealing gaskets 28 are provided between the upper sealing end plate 21 and the lower sealing end plate 22 and the cylinder 1.
[0059] Example 10:
[0060] This embodiment is an optimization based on the above embodiment 6.
[0061] To facilitate the installation of the controller 29 and the nitrogen exhaust pipe 16 and to improve the exhaust effect, the controller 29 is provided on the upper sealing plate. The nitrogen exhaust pipe 16 is an L-shaped pipe. The exhaust end of the L-shaped pipe is located at the upper part of the cylinder 1, and the air inlet end of the L-shaped pipe is connected to the space below 5.
[0062] This water seal device utilizes a purely physical water seal for pressure relief, ensuring safety and reliability. It achieves automatic nitrogen intake and natural physical nitrogen release. Integrated with a negative pressure prevention function, it effectively prevents ultrapure water from contacting air. Furthermore, it features purely mechanical automatic water replenishment; when the water level in the nitrogen-sealed water tank 9 exceeds the limit, it can naturally overflow and discharge the excess water without altering the tank. This device integrates automatic nitrogen intake, physical nitrogen release, negative pressure prevention, and over-limit overflow functions into one unit. It is simple to use, stable, and reliable, requiring no complex controls.
[0063] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. An ultra-pure water nitrogen sealed multi-functional water seal device, characterized by: Includes a cylindrical body, wherein a partition is provided inside the cylindrical body, the partition dividing the cylindrical body into an upper space and a lower space, and a connecting pipe is provided on the partition, the connecting pipe connecting the upper space and the lower space; The upper end of the cylinder is provided with a nitrogen sealing water tank connection port, a nitrogen inlet valve and a negative pressure prevention valve that communicate with the space above. The nitrogen sealing water tank connection port is connected to the side connection port on the nitrogen sealing water tank through an external pipe. The nitrogen inlet valve is used to connect to the nitrogen inlet pipe. The lower end of the cylinder is provided with an overflow pipe that communicates with the space below. The cylinder is provided with a water seal inlet that communicates with the space above, and the water seal inlet is used to connect to an ultrapure water pipeline. The cylinder is also provided with a nitrogen venting pipe that communicates with the space below.
2. The ultra-pure water nitrogen sealed multifunctional water seal device according to claim 1, characterized in that: The water seal inlet is sequentially connected to a first pipe, a water level controller, and a second pipe. The first pipe is located in the upper space, and the water level controller and the second pipe are located in the lower space. The outlet of the second pipe is connected to the upper space.
3. The ultra-pure water nitrogen sealed multifunctional water seal device according to claim 2, characterized in that: The water level controller is a float water level controller.
4. The ultra-pure water nitrogen sealed multi-functional water seal device according to claim 1, characterized in that: The nitrogen-sealed water tank is equipped with an ultrapure water inlet at its upper end, and the ultrapure water inlet is connected to an ultrapure water pipeline.
5. The ultra-pure water nitrogen sealed multi-functional water seal device according to claim 1, characterized in that: Two connecting pipes are symmetrically arranged on the partition.
6. The ultra-pure water nitrogen sealed multi-functional water seal device according to claim 1, characterized in that: The upper end of the cylinder is provided with an upper sealing end plate, the nitrogen sealing water tank connection port, the nitrogen inlet valve and the anti-negative pressure valve are provided on the upper sealing end plate, the lower end of the cylinder is provided with a lower sealing end plate, the overflow pipe is provided on the lower sealing end plate, and the upper end of the overflow pipe is connected to the space below.
7. The ultra-pure water nitrogen sealed multi-functional water seal device according to claim 6, characterized in that: The partition is provided with a docking seat in the middle, and a large sleeve is coaxially connected to the docking seat. A collar is provided between the lower end of the large sleeve and the overflow pipe. The upper end of the overflow pipe is located inside the large sleeve. The collar is provided with multiple overflow channels in the circumferential direction. The overflow channels connect the space below and the inside of the large sleeve.
8. The ultra-pure water nitrogen sealed multi-functional water seal device according to claim 6, characterized in that: A manual venting valve is provided on the lower sealing end plate.
9. The ultra-pure water nitrogen sealed multi-functional water seal device according to claim 6, characterized in that: Both the upper and lower sealing end plates are provided with sealing gaskets between themselves and the cylinder.
10. The ultra-pure water nitrogen sealed multi-functional water seal device of claim 6, wherein: A controller is provided on the upper sealing end plate. The nitrogen exhaust pipe is an L-shaped pipe. The exhaust end of the L-shaped pipe is located at the upper part of the cylinder, and the air inlet end of the L-shaped pipe is connected to the space below.