Buffer filter
By designing a buffer filter, the nitrogen gas is replaced by the intake pipe and filter element structure, the problem of nitrogen accumulation in the hydrogen compressor affecting the purity of hydrogen and achieving high purity of hydrogen.
Patent Information
- Application Number
- CN202323597327.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2033-12-28
AI Technical Summary
During the trial operation of the hydrogen compressor, it is difficult for nitrogen to be discharged from the bottom of the buffer, affecting the purity of the hydrogen.
A buffer filter is designed, including a cylinder, positioning plate, intake pipe and filter element. Hydrogen is continuously injected into the buffer through the intake pipe, and the accumulated nitrogen is replaced by the filter element and sealing structure.
Effectively replace the nitrogen accumulated at the bottom of the buffer to ensure the purity of the hydrogen.
Smart Images
Figure CN222254863U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas buffer filtration, in particular to a buffer filter. Background Art
[0002] During the trial operation of a new hydrogen compressor, nitrogen needs to be filled into each device to drive away the air (especially oxygen) in the device. However, the buffer used to smooth out gas pressure pulsation has a large depth, and the weight of nitrogen is greater than the weight of hydrogen under the same volume, so the nitrogen accumulates at the bottom of the buffer and is not easy to discharge. During formal operation, the hydrogen filled into the buffer cannot completely discharge the nitrogen, affecting the purity of the hydrogen. Utility Model Content
[0003] Aiming at the problem that the nitrogen accumulated at the bottom of the buffer cannot be replaced after the hydrogen is injected, thus affecting the purity of the hydrogen, the utility model discloses a buffer filter.
[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0005] A buffer filter comprises a cylinder, a positioning plate, an air inlet pipe and a filter element, wherein the cylinder and the positioning plate are detachably connected to form a cavity structure, the air inlet pipe and the filter element are arranged in the cavity, the positioning plate is provided with an air inlet port and an end plug mounting hole, one end of the air inlet pipe is connected to the positioning plate and communicates with the outside world through the air inlet port, and the other end is located at the lower part of the cavity, the filter element is detachably connected to an end plug and is detachably connected to the end plug mounting hole through the end plug, the end plug has an air outlet, and the filter element is communicated with the outside world through the air outlet.
[0006] Furthermore, the positioning plate includes an upper positioning plate and a lower positioning plate, the upper positioning plate is detachably connected to one end of the cylinder, and the lower positioning plate is detachably connected to the other end of the cylinder, the upper positioning plate and the lower positioning plate are connected by a plurality of pull rods, and the air inlet and end plug mounting holes are located on the upper positioning plate.
[0007] Furthermore, a sealing ring is respectively arranged between the upper positioning plate, the lower positioning plate and the cylinder barrel.
[0008] Furthermore, the cross-section of the end plug mounting hole is T-shaped, the upper inner wall has a thread matched with the end plug, and the lower inner wall has a first sealing groove, and a sealing ring is placed in the first sealing groove.
[0009] Furthermore, the top of the end plug is nut-shaped and protrudes from the upper positioning plate. A limiting gasket is sleeved on the outer side of the top of the end plug, and the limiting gasket is connected to the upper positioning plate by bolts.
[0010] Furthermore, the air inlet and the air outlet each include a first hole segment, a second hole segment and a third hole segment, the second hole segment is located between the first hole segment and the third hole segment, and the aperture of the second hole segment is smaller than the apertures of the first hole segment and the third hole segment.
[0011] Furthermore, the aperture of the first hole segment in the air inlet is the same as the aperture of the third hole segment.
[0012] Furthermore, the air inlet pipe is detachably fixedly connected to the third hole section of the air inlet.
[0013] Furthermore, the upper portion of the filter element is threadedly connected to the third hole section of the air outlet.
[0014] Furthermore, a second sealing groove is provided on the outer side wall of the upper portion of the filter element, and a sealing ring is placed in the second sealing groove.
[0015] The beneficial effect of the utility model is that the utility model places one end of the intake pipe at the lower part of the cavity structure formed by the cylinder barrel and the positioning plate, and after hydrogen is continuously injected into the cavity through the intake pipe, the nitrogen accumulated at the bottom of the cavity can be completely replaced to avoid affecting the purity of the hydrogen. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 Shown is a schematic diagram of the structural principle of an implementation method of the utility model.
[0017] Figure 2 Shown Figure 1 Top view of the .
[0018] Figure 3 Shown Figure 2 Cross-sectional view at point A in the middle.
[0019] Figure 4 Shown Figure 3 Side view of .
[0020] Explanation of the accompanying drawings: 1. cylinder barrel; 2. upper positioning plate; 3. lower positioning plate; 4. air inlet; 5. air inlet pipe; 6. end plug; 7. filter element; 8. air outlet; 9. limiting gasket. DETAILED DESCRIPTION
[0021] The utility model discloses a buffer filter. An implementation manner of the utility model is described in detail below in conjunction with the accompanying drawings.
[0022] like Figure 1As shown, the buffer filter includes a cylinder 1, an upper positioning plate 2, a lower positioning plate 3, an air intake pipe 5 and a filter element 7. The upper positioning plate 2 is detachably fixedly connected to one end of the cylinder 1, and the lower positioning plate 3 is detachably fixedly connected to the other end of the cylinder 1. A sealing ring is provided between the upper positioning plate 2 and the cylinder 1, and a sealing ring is provided between the lower positioning plate 3 and the cylinder 1. The upper positioning plate 2 and the lower positioning plate 3 are connected by a plurality of tie rods, and the upper positioning plate 2 and the lower positioning plate 3 are detachably fixedly connected to the tie rods by a plurality of nuts. A cavity structure is formed between the upper positioning plate 2, the lower positioning plate 3 and the cylinder 1, and the air intake pipe 5 and the filter element 7 are provided in the cavity structure.
[0023] Combination Figure 2 and Figure 3 As shown, the upper positioning plate 2 is provided with a through air inlet 4 and a through end plug mounting hole. The air inlet 4 includes a first hole segment, a second hole segment and a third hole segment, the second hole segment is located between the first hole segment and the third hole segment, and the aperture of the second hole segment is smaller than the aperture of the first hole segment, and the aperture of the first hole segment is the same as the aperture of the third hole segment. One end of the air inlet pipe 5 is detachably fixedly connected to the third hole segment of the air inlet 4, and the other end is located at the lower part of the cavity and adjacent to the bottom of the cavity.
[0024] like Figure 4 As shown, the cross-section of the end plug mounting hole is T-shaped, the upper inner wall has a thread, the lower inner wall has a first sealing groove, and a sealing ring is placed in the first sealing groove. The end plug 6 is divided into a first connecting section, a second connecting section and a third connecting section. The first connecting section is in the shape of a nut, located at the top of the end plug 6 and protruding from the top of the upper positioning plate 2. A limiting gasket 9 is sleeved on the outer side of the first connecting section. The limiting gasket 9 is detachably fixedly connected to the upper positioning plate 2 by bolts. The limiting gasket 9 prevents the end plug 6 from loosening or falling off due to vibration, pipeline pulsation, and frequent changes in pressure. The outer wall of the second connecting section has a thread that matches the upper inner wall of the end plug mounting hole, and the end plug 6 is threadedly connected to the end plug mounting hole through the second connecting section. The outer wall of the third connecting section is smooth and cooperates with the sealing ring located in the first sealing groove for sealing. The end plug 6 has an air outlet 8 at the center thereof. The air outlet 8 includes a first hole segment, a second hole segment and a third hole segment. The second hole segment is located between the first hole segment and the third hole segment, and the aperture of the second hole segment is smaller than the apertures of the first hole segment and the third hole segment. The hole wall of the third hole segment has threads. The outer side wall of the upper part of the filter element 7 has a second sealing groove and threads matching the third hole segment of the air outlet 8. The upper part of the filter element 7 is threadedly connected to the third hole segment of the air outlet 8, and the filter element 7 is connected to the outside world through the air outlet 8. The second sealing groove is located below the threads, and a sealing ring is placed inside.
[0025] During installation, one end of the air inlet pipe 5 is detachably connected to the air inlet 4, the filter element 7 is threadedly connected to the air outlet 8 of the end plug 6, and then the end plug 6 is threadedly connected to the end plug mounting hole of the upper positioning plate 2. The first connecting section protrudes from the top of the upper positioning plate 2, and a limiting gasket 9 is sleeved on the outside. The limiting gasket 9 is detachably fixedly connected to the upper positioning plate 2 by bolts. The upper positioning plate 2 and the lower positioning plate 3 are installed at the end of the cylinder 1, and a number of tie rods are detachably fixed between the upper positioning plate 2 and the lower positioning plate 3. Hydrogen passes through the air inlet pipe 5 from the air inlet 4 and enters the bottom of the cavity structure formed by the cylinder 1 and the positioning plate. After hydrogen is continuously injected into the cavity through the air inlet 4 and the air inlet pipe 5, the nitrogen accumulated at the bottom of the cavity can be completely replaced to avoid affecting the purity of the hydrogen. When the filter element 7 needs to be replaced after long-term use, the limit gasket 9 is removed from the upper positioning plate 2, and the first connecting section of the end plug 6 is rotated with a wrench. The end plug 6 and the filter element 7 can be taken out from the upper positioning plate 2 at the same time, and then the filter element 7 can be replaced. The disassembly is convenient and quick, which is convenient for later maintenance.
[0026] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.
Claims
1. A buffer filter, characterized in that: The invention comprises a cylinder barrel (1), a positioning plate, an air intake pipe (5) and a filter element (7); the cylinder barrel (1) and the positioning plate are detachably connected to form a cavity structure; the air intake pipe (5) and the filter element (7) are arranged in the cavity; the positioning plate is provided with an air intake port (4) and an end plug mounting hole; one end of the air intake pipe (5) is connected to the positioning plate and communicates with the outside world through the air intake port (4); the other end is located at the lower part of the cavity; the filter element (7) is detachably connected to an end plug (6) and is detachably connected to the end plug mounting hole through the end plug (6); the end plug (6) has an air outlet (8); the filter element (7) communicates with the outside world through the air outlet (8).
2. A buffer filter according to claim 1, characterized in that: The positioning plate comprises an upper positioning plate (2) and a lower positioning plate (3); the upper positioning plate (2) is detachably connected to one end of the cylinder barrel (1); the lower positioning plate (3) is detachably connected to the other end of the cylinder barrel (1); the upper positioning plate (2) and the lower positioning plate (3) are connected via a plurality of tie rods; the air inlet (4) and the end plug mounting hole are located on the upper positioning plate (2).
3. A buffer filter according to claim 2, characterized in that: A sealing ring is provided between the upper positioning plate (2), the lower positioning plate (3) and the cylinder barrel (1).
4. A buffer filter according to claim 1, characterized in that: The cross section of the end plug mounting hole is T-shaped, the upper inner wall has a thread matched with the end plug (6), and the lower inner wall has a first sealing groove, in which a sealing ring is placed.
5. A buffer filter according to claim 2, characterized in that: The top of the end plug (6) is nut-shaped and protrudes from the upper positioning plate (2). A limiting gasket (9) is sleeved on the outer side of the top of the end plug (6), and the limiting gasket (9) is connected to the upper positioning plate (2) by bolts.
6. A buffer filter according to claim 1, characterized in that: The air inlet (4) and the air outlet (8) each comprise a first hole segment, a second hole segment and a third hole segment, the second hole segment is located between the first hole segment and the third hole segment, and the aperture of the second hole segment is smaller than the apertures of the first hole segment and the third hole segment.
7. A buffer filter according to claim 6, characterized in that: The aperture of the first hole section in the air inlet (4) is the same as the aperture of the third hole section.
8. A buffer filter according to claim 6, characterized in that: The air inlet pipe (5) is detachably fixedly connected to the third hole section of the air inlet (4).
9. A buffer filter according to claim 6, characterized in that: The upper portion of the filter element (7) is threadedly connected to the third hole section of the air outlet (8).
10. A buffer filter according to claim 9, characterized in that: The outer side wall of the upper part of the filter element (7) is provided with a second sealing groove, and a sealing ring is placed in the second sealing groove.