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CN-224214886-U - Stainless steel pipe for high-pressure boiler

CN224214886UCN 224214886 UCN224214886 UCN 224214886UCN-224214886-U

Abstract

The utility model relates to the technical field of stainless steel pipes, in particular to a stainless steel pipe for a high-pressure boiler, which comprises a pipe body, wherein one end of the pipe body is provided with a fixed flange, the other end of the pipe body is rotationally connected with a rotary flange, a plurality of corresponding bolt holes are formed in the fixed flange and the rotary flange, a limiting block is fixed at one end of the pipe body, which is positioned at the outer side of the rotary flange, and is adapted, two inclined plane half-ring blocks are fixed at the outer side of the rotary flange, the two inclined plane half-ring blocks are distributed symmetrically in a central mode and are closed to form a whole circle.

Inventors

  • ZHOU WENQING
  • FAN QI

Assignees

  • 盛德鑫泰新材料股份有限公司

Dates

Publication Date
20260508
Application Date
20250605

Claims (6)

  1. 1. The stainless steel pipe for the high-pressure boiler comprises a pipe body (1) and is characterized in that one end of the pipe body (1) is provided with a fixed flange plate (2), the other end of the pipe body (1) is rotationally connected with a rotary flange plate (3), a plurality of corresponding bolt holes (4) are formed in the fixed flange plate (2) and the rotary flange plate (3), a limiting block (5) is fixed at one end of the pipe body (1) located on the rotary flange plate (3), the limiting block (5) is located at the outer side of the rotary flange plate (3) and is matched with the rotary flange plate, two inclined surface semi-annular blocks (6) are fixed at the outer side end of the rotary flange plate (3), the two inclined surface semi-annular blocks (6) are distributed in a central symmetry mode and are closed to form a whole circle, a sliding groove (7) matched with the inclined surface semi-annular blocks (6) is formed in the outer side end of the fixed flange plate (2), and a loosening assembly is arranged on the outer wall of the pipe body (1) and is close to the rotary flange plate (3).
  2. 2. The stainless steel tube for the high-pressure boiler of claim 1, wherein the loosening assembly comprises a fixing ring (8), the fixing ring (8) is sleeved and fixed on the outer wall of the tube body (1), a buffer groove (9) is formed in the fixing ring (8), the buffer groove (9) faces the rotary flange plate (3), a buffer ring (10) is connected in the buffer groove (9) in a sliding mode, a plurality of springs (11) are fixed in the buffer groove (9), and the other ends of the springs (11) are fixed on the buffer ring (10).
  3. 3. A stainless steel tube for a high pressure boiler according to claim 2, wherein a plurality of rolling balls (12) are rotatably connected to the side of said buffer ring (10) contacting with the rotary flange (3), said rolling balls (12) contacting with the rotary flange (3).
  4. 4. A stainless steel tube for a high pressure boiler according to claim 2, wherein said fixing ring (8) is fixed to the outer wall of the tube body (1) by welding.
  5. 5. The stainless steel tube for the high-pressure boiler according to claim 1, wherein the outer wall of the inclined plane semi-annular block (6) and the inner wall of the chute (7) are coated with a lubricating coating.
  6. 6. A stainless steel tube for a high pressure boiler according to claim 1, wherein the edges of said chute (7) are rounded.

Description

Stainless steel pipe for high-pressure boiler Technical Field The utility model relates to the technical field of stainless steel pipes, in particular to a stainless steel pipe for a high-pressure boiler. Background The stainless steel tube for the high-pressure boiler is one of boiler tubes, has strict requirements on the steel type and process used for manufacturing the steel tube, and is easy to oxidize and corrode because the high-pressure boiler tube is often in high-temperature and high-pressure conditions when in use, so the steel tube needs to have high lasting strength, high oxidation and corrosion resistance and good structural stability; When the existing stainless steel pipe for the high-pressure boiler is connected and fixed, a flange is usually arranged for realizing the connection and the fixation, but the alignment adjustment of the fixing holes on the flange is needed during the butt joint, the connection and the fixation are realized by manually rotating a pipeline, the operation is complex, the operation is inconvenient, the time and the labor are wasted, and the application designs the stainless steel pipe for the high-pressure boiler aiming at the problems. Disclosure of utility model (One) solving the technical problems Aiming at the defects of the prior art, the utility model provides a stainless steel tube for a high-pressure boiler. (II) technical scheme The stainless steel pipe for the high-pressure boiler comprises a pipe body, wherein one end of the pipe body is provided with a fixed flange, the other end of the pipe body is rotationally connected with a rotary flange, a plurality of corresponding bolt holes are formed in the fixed flange and the rotary flange, a limiting block is fixed at one end of the pipe body, which is positioned on the rotary flange, and is positioned at the outer side of the rotary flange and is matched with the rotary flange, two inclined plane semi-ring blocks are fixed at the outer side end of the rotary flange, the two inclined plane semi-ring blocks are distributed in a central symmetry mode and are closed to form a whole circle, a sliding groove matched with the inclined plane semi-ring blocks is formed in the outer side end of the fixed flange, and a loosening assembly is arranged on the outer wall of the pipe body and is close to the rotary flange. Furthermore, the utility model improves that the loosening assembly comprises a fixed ring, the fixed ring is sleeved and fixed on the outer wall of the pipe body, a buffer groove is formed in the fixed ring, the buffer groove faces the rotary flange plate, the buffer ring is connected in the buffer groove in a sliding manner, a plurality of springs are fixed in the buffer groove, and the other ends of the springs are fixed on the buffer ring. In order to reduce the friction effect, the utility model is improved in that a plurality of rolling balls are rotatably connected to one side of the buffer ring, which is contacted with the rotary flange, and the rolling balls are contacted with the rotary flange. In order to improve the structural strength, the utility model is improved in that the fixing ring is fixed on the outer wall of the pipe body through welding. In order to enable the inclined plane half ring block to rotate in the chute more smoothly, the utility model is improved in that the outer wall of the inclined plane half ring block and the inner wall of the chute are coated with lubricating coatings. In order to facilitate the quick insertion of the inclined plane semi-ring block into the chute, the utility model is improved in that the edge of the chute is rounded. (III) beneficial effects Compared with the prior art, the utility model provides the stainless steel tube for the high-pressure boiler, which has the following beneficial effects: According to the stainless steel pipe for the high-pressure boiler, the rotary flange is arranged, under the matching of the inclined plane semi-ring block and the adaptive sliding groove, when the rotary flange is in butt joint with the fixed flange, the rotary flange automatically rotates and aligns bolt holes, so that the complicated step of manually aligning the bolt holes is omitted when the stainless steel pipes are in butt joint fixation. Drawings FIG. 1 is a schematic diagram of a first front view structure of the present utility model; FIG. 2 is a schematic diagram of a second front view structure of the present utility model; FIG. 3 is a schematic view of a first partial structure of the present utility model in cross section; fig. 4 is a schematic view of a second partial structure of the present utility model. In the figure, 1, a pipe body; 2, a fixed flange plate, 3, a rotary flange plate, 4, a bolt hole, 5, a limiting block, 6, an inclined plane semi-ring block, 7, a chute, 8, a fixed ring, 9, a buffer groove, 10, a buffer ring, 11, a spring, 12 and a rolling ball. Detailed Description The following description of the embodiments of the presen