Fluid pressure reducing device

A fluid pressure reducing device that is mounted in a fluid treatment device including an inlet pipe through which a high-pressure fluid is introduced and an outlet pipe through which a low-pressure fluid is discharged, to induce fluid pressure reduction, the fluid pressure reducing device comprising:

• an annular disk A (100) configured to have an outer diameter and an inner diameter;
• and
• an annular disk B (200) configured to have an outer diameter and an inner diameter, which are the same as the outer diameter and the inner diameter of the disk A,
• wherein the disk A (100) and the disk B (200) are coupled to each other as a pair of disks,
• wherein a plurality of diffuser cells are formed between an outer circumferential surface (400) and an inner circumferential surface (500) of the disk A (100) so that a diffuser a (110) is radially formed in the disk A (100) in a row, a plurality of diffuser cells are formed between an outer circumferential surface (400) and an inner circumferential surface (500) of the disk B (200) so that a diffuser b (210) is radially formed in the disk B (200) in a row, in which the diffusers a (110) and the diffusers b (210) are radially spaced apart from each other at predetermined intervals,
• wherein each diffuser cell includes a head portion (301) having a trapezoidal shape of a narrow top and a top wide bottom to have a diffusion surface (301c) in a direction in which the fluid moves, and a rectangular body portion (302) coupled adjacent to a lower end of the head portion (301), in which the disk A (100) and the disk B (200) are concentrically coupled to each other such that the body portion (302) of each diffuser cell of the disk A (100) is connected to the head portion (301) of each diffuser cell of the disk B (200), and the body portion (302) of the disk B (100) is connected to and stacked on the head portion (301) of the diffuser cell of the disk A, thereby allowing the diffusers a (110) and the diffusers b (210) to be vertically connected to each other while crossing each other in order to form a pressure reduction flow path,
• wherein the diffuser a (110) of the disk A (100) including the plurality of diffuser cells includes:
• an upper open cell (310) provided adjacent to the outer circumferential surface (400) or the inner circumferential surface (500) of the disk A (100) to form a first port serving as an inlet of the fluid;
• a lower open cell (330) provided adjacent to the inner circumferential surface (500) or the outer circumferential surface (400) of the disk A (100) to form a second port serving as an outlet of the fluid;
• and
• at least one closed cell (320) provided between the upper open cell (310) and the lower open cell (330),
• wherein the upper open cell (310), the closed cell (320), and the lower open cell (330) are radially arranged in a row at predetermined intervals, so that a plurality of diffusers a (110) are formed in a circumferential direction of the disk A (100) while being spaced apart from each other at predetermined angles,
• wherein a plurality of diffusers b (210) of the disk B (200) including the plurality of diffuser cells have
• a plurality of closed cells (320) radially formed in a row in a direction from the outer circumferential surface (400) to the inner circumferential surface (500) of the disk B (200) at predetermined intervals, in which closed heads (321) of the closed cells are arranged to face the outer circumferential surface (400) so that a plurality of diffusers b (210) of the disk B (200) are formed in a circumferential direction of the disk B (200) while being spaced apart from each other at predetermined angles, and
• wherein the disk A (100) and the disk B (200) are concentrically coupled to each other such that each diffuser cell of the disk A vertically and partially overlaps each diffuser cell of the disk B (200), in order to form a pressure reduction flow path in a direction from the outer circumferential surface (400) to the inner circumferential surface (500).