Secondary filtering device for exhaust pipe of hydrogen cooler of generator
By installing a secondary filtration device on the exhaust pipe of the generator hydrogen cooler, and utilizing structures such as filter cartridges, cone tops, connecting frames, and baffles, the problem of exhaust pipe blockage was solved, achieving effective impurity filtration and anti-clogging, thus ensuring the safe and stable operation of the unit and efficient power generation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUADIAN POWER INTERNATIONAL CORPORATION LTD
- Filing Date
- 2025-09-22
- Publication Date
- 2026-07-21
AI Technical Summary
The exhaust pipe of the generator hydrogen cooler is prone to blockage, which affects the cooling effect and the safe and stable operation of the unit, and is inconvenient to inspect and deal with.
Design a secondary filtration device for the exhaust pipe of a generator hydrogen cooler, including a filter cartridge, a cone top, a connecting frame, a baffle plate, and an air inlet. It is fixed to the exhaust pipe by a threaded connection to achieve secondary filtration of open water and prevent impurities from clogging it.
It effectively reduces scale buildup, prevents impurities from accumulating at the joint surface between the filter cartridge and the upper water chamber cover, avoids impurities clogging the exhaust pipe, and ensures the normal operation of the hydrogen cooler and power generation efficiency.
Smart Images
Figure CN224524294U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a secondary filtration device for the exhaust pipe of a generator hydrogen cooler. Background Technology
[0002] During normal operation of the power plant generator, the generator hydrogen cooler requires regular daily maintenance (opening the vent valve of each hydrogen cooler until a continuous water flow is observed, then closing it). Because the generator hydrogen cooler uses open-loop water cooling, the water quality is poor, and the vent pipe is narrow (approximately 10mm inner diameter). Currently, the hydrogen cooler vent pipe only uses a primary filter to intercept large particles, making it prone to blockage. Blockage in the vent pipe leads to poor cooling performance of the generator hydrogen cooler, affecting hydrogen temperature and consequently impacting the safe and stable operation of the unit. During normal operation, the open-loop water pressure is 0.38 MPa, and the hydrogen pressure is 0.3 MPa. The vent pipe is located inside the hydrogen cooler, making inspection difficult, and the hydrogen cooler requires high sealing. Troubleshooting is strictly prohibited during normal operation; blockage in the vent pipe necessitates shutdown for repair, impacting power generation efficiency. Utility Model Content
[0003] The purpose of this invention is to provide a secondary filtration device for the exhaust pipe of a generator hydrogen cooler to solve the aforementioned technical problems.
[0004] The above objectives are achieved through the following technical solutions: A secondary filtration device for the exhaust pipe of a generator hydrogen cooler comprises a filter cylinder with a conical top, a connecting frame fixed inside the filter cylinder and fixed with a screw sleeve, water baffles on the left and right sides of the bottom of the filter cylinder, and multiple evenly arranged air inlets on the circumferential surface of the filter cylinder.
[0005] The secondary filtration device for the exhaust pipe of a generator hydrogen cooler, wherein the length of the baffle plate is 20mm.
[0006] The secondary filtration device for the exhaust pipe of a generator hydrogen cooler, wherein the angle between the side of the cone apex and the horizontal plane is 120°-160°. Beneficial effects
[0007] 1. This utility model adds a filter device to the water chamber of the hydrogen cooler to perform secondary filtration of the open water, thereby effectively reducing scale buildup.
[0008] 2. The filter cartridge of this utility model has a conical top, and there is no air inlet hole at the conical part, which is conducive to the impurities above the filter cartridge being washed away by the water flow and prevents the impurities from accumulating on the joint surface between the filter cartridge and the upper water chamber cover.
[0009] 3. The filter cartridge of this utility model has an air inlet hole on its circumference, which can perform secondary filtration of impurities and prevent impurities in the water chamber from falling into the exhaust pipe and clogging the exhaust pipe.
[0010] 4. This utility model adds a baffle plate to the lower part of the filter cartridge, which can prevent water flow from carrying impurities into the filter cartridge from the lower part, thereby avoiding impurities from clogging the exhaust pipe of the hydrogen cooler. Attached Figure Description
[0011] Figure 1 This is the front view of the present invention; Figure 2 This is a bottom view of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a schematic diagram of the structure of this utility model in use; The components are: 1. Conical top; 2. Air inlet; 3. Filter cartridge; 4. Screw sleeve; 5. Connecting frame; 6. Water baffle; 7. Upper part of exhaust pipe; 8. Exhaust pipe; 9. Water chamber cover plate; 10. Water chamber; 11. Rib plate; 12. Circular ring plate. Detailed Implementation
[0012] Reference Figures 1-3 A secondary filtration device for the exhaust pipe of a generator hydrogen cooler comprises a filter cartridge 3, the top of which has a conical top 1, a connecting frame 5 fixed inside the filter cartridge, the connecting frame including a circular ring plate 12, four ribs 11 fixed around the circular ring plate, the ribs being fixed inside the filter cartridge, the connecting frame being fixed to a threaded sleeve 4, the threaded sleeve having internal threads, water baffles 6 on the left and right sides of the bottom of the filter cartridge, and multiple evenly arranged air inlets 2 on the circumferential surface of the filter cartridge.
[0013] The length of the water baffle is 20mm.
[0014] The angle between the side of the cone apex and the horizontal plane is 120°-160°.
[0015] Working principle: Refer to Figure 4 The exhaust pipe is externally threaded, and the threaded sleeve has an internal thread that matches it. The device is connected to the exhaust pipe via the thread. After connection, the pointed top of the exhaust pipe rests on the inner top of the cone. The top of the cone is flat. It is fixed to the upper water chamber cover to prevent the filter device from shifting due to instability. Traditional filter screens are prone to deformation under high pressure, which leads to a decrease in filtration efficiency. The device performs secondary filtration of open water to effectively reduce scale buildup.
[0016] Based on an exhaust pipe diameter of 10mm, the filter cartridge diameter is 3 times that of the exhaust pipe, i.e., 30mm. The diameter of the air inlet hole on the filter cartridge is 0.05mm, and the overall porosity of the filter cartridge is 60%-90%. The top of the filter cartridge has a conical apex, and there is no air inlet at the conical part, which facilitates the flushing of impurities above the filter cartridge by the water flow and prevents impurities from accumulating at the joint surface between the filter cartridge and the upper water chamber cover.
[0017] The filter cartridge has an air inlet hole around its circumference, which can filter impurities a second time and prevent impurities in the water chamber from falling into the exhaust pipe and clogging it.
[0018] Installing a baffle plate at the bottom of the filter cartridge can prevent water flow from carrying impurities into the filter cartridge from the bottom, thereby avoiding impurities clogging the hydrogen cooler exhaust pipe.
[0019] After this utility model is put into use, the hydrogen cooler is filled with water, the baffle plate blocks impurities at the bottom, the gas inside the hydrogen cooler enters through the air inlet of the newly added filter cartridge, and there is enough gap at the top of the exhaust pipe to allow the gas to be discharged from the exhaust pipe, so as to achieve the effect of secondary filtration.
Claims
1. A secondary filtration device for the exhaust pipe of a generator hydrogen cooler, characterized in that: Its components include a filter cartridge, the top of which has a conical top, a connecting frame fixed inside the filter cartridge, the connecting frame being fixed with a screw sleeve, water baffles on the left and right sides of the bottom of the filter cartridge, and multiple evenly arranged air inlets on the circumferential surface of the filter cartridge.
2. The secondary filtration device for the exhaust pipe of a generator hydrogen cooler according to claim 1, characterized in that: The length of the water baffle is 20mm.
3. The secondary filtration device for the exhaust pipe of a generator hydrogen cooler according to claim 2, characterized in that: The angle between the side of the cone apex and the horizontal plane is 120°-160°.