Variable spring support of reactor

Abstract

The invention discloses a variable spring support of a reactor, and belongs to the technical field of reactor equipment. Comprising a disc spring outer cylinder, a disc spring guide pipe is arranged in the disc spring outer cylinder and sleeved with a disc spring, a disc spring base is arranged at the bottom of the disc spring guide pipe, a disc spring pressing plate is arranged on the outer wall of the disc spring guide pipe, and the disc spring is located between the disc spring base and the disc spring pressing plate; adjusting studs and lower displacement studs are evenly arranged on the positioning cover plate in the circumferential direction of the positioning cover plate, lower displacement holes are formed in the top of the disc spring pressing plate, and the bottoms of the lower displacement studs are opposite to the lower displacement holes. The positioning cover plate is rotationally provided with a loading pipe, and a heat insulation plate is arranged at the top of the loading pipe; the bottom of the disc spring outer cylinder is in sliding connection with a reactor supporting steel beam, the adjusting stud, the lower displacement stud and the loading cylinder are controlled through the adjusting nut to compensate the displacement, caused by thermal expansion, of the reactor in the vertical direction, the displacement, caused by thermal expansion, of the reactor in the horizontal direction is supplemented through the polytetrafluoroethylene sliding plate, and the thermal stability of the supporting beam can be improved; and thus, the overall operation efficiency of the SCR reactor is improved.

Description

Technical Field

[0001] The invention relates to a variable spring support for a reactor, belonging to the technical field of reactor equipment. Background Art

[0002] Coal-fired power denitrification devices usually use a selective catalytic reduction (SCR) reactor, which effectively reduces the emission of nitrogen oxides (NOx). Each SCR reactor is equipped with a reactor support steel beam, which is crucial to the stability and reaction efficiency of the catalyst.

[0003] During the operation of the SCR reactor, the reactor support steel beam will expand due to the influence of heat. This thermal expansion will cause the displacement of the support steel beam, which may cause uneven temperature distribution inside the reactor. In different areas of the reactor, temperature differences may lead to different catalytic effects, which in turn affects the NOx removal efficiency. Therefore, a reactor variable spring support is needed to compensate for the effect of thermal expansion on reactor performance and ensure that the temperature distribution of the reactor is as balanced as possible to optimize the denitration effect and extend the service life of the equipment. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a variable spring support for a reactor.

[0005] The objective of the present invention is achieved through the following technical scheme: a reactor variable spring support, comprising a disc spring outer cylinder, a disc spring guide tube is arranged inside the disc spring outer cylinder, a disc spring is arranged outside the disc spring guide tube, a disc spring base is arranged at the bottom of the disc spring guide tube, a disc spring pressure plate is arranged on the outer wall of the disc spring guide tube, and the disc spring is located between the disc spring base and the disc spring pressure plate; a positioning cover plate is arranged on the top of the disc spring outer cylinder, and the positioning cover plate is evenly provided with N adjustment studs and N lower displacement studs along its circumferential direction, N≥3, N lower displacement holes are arranged on the top of the disc spring pressure plate, the bottom of the lower displacement stud is opposite to the lower displacement hole, and is connected to the positioning cover plate by adjusting the studs, and the deflection displacement of the reactor support steel beam is compensated by adjusting the lower displacement studs; the positioning cover plate is rotatably provided with a load tube, and a heat insulation plate is arranged on the top of the load tube; the bottom of the disc spring outer cylinder is slidably connected to the reactor support steel beam.

[0006] Preferably, M groups of disc springs are provided between the disc spring base and the disc spring pressure plate, M≥1, and each group of disc springs includes two disc springs arranged in a mating manner.

[0007] Preferably, a support bottom is provided at the bottom of the disc spring outer tube, and a polytetrafluoroethylene slide plate is provided at the bottom of the support bottom, which is connected to the reactor support steel beam via the polytetrafluoroethylene slide plate.

[0008] Preferably, the adjustment studs and the lower displacement studs are spaced apart from each other.

[0009] Preferably, the positioning cover plate is provided with a threaded hole, and the adjustment stud and the lower displacement stud are connected to the positioning cover plate via nuts.

[0010] Preferably, the outer wall of the disc spring outer cylinder is provided with a displacement scale which can display the height of the variable spring support of the reactor.

[0011] Preferably, the heat insulation plate is connected to the reactor catalyst support beam by bolts.

[0012] Preferably, a mounting groove is provided on the top of the thermal insulation plate for placing a reactor catalyst support beam.

[0013] Preferably, the load tube is provided with threads, and a threaded hole is provided in the middle of the positioning cover plate.

[0014] The present invention has the following beneficial effects: the present invention controls the adjustment stud, the lower displacement stud and the load cylinder by adjusting the nut to compensate for the vertical displacement of the reactor caused by thermal expansion, and supplements the horizontal displacement of the reactor caused by thermal expansion by the polytetrafluoroethylene slide plate, thereby improving the thermal stability of the support beam and thus improving the overall operating efficiency of the SCR reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall structural schematic diagram of the reactor variable spring support;

[0016] Figure 2 is a front view of a variable spring support for a reactor;

[0017] Figure 3 Schematic diagram of the internal structure of the reactor variable spring support Figure 1 ;

[0018] Figure 4 Schematic diagram of the internal structure of the reactor variable spring support Figure 2 ;

[0019] Figure 5 is a cross-sectional view of a variable spring support of a reactor;

[0020] Figure 6 A schematic diagram of a heat shield for a reactor variable spring support;

[0021] Figure 7 Schematic diagram of the disc spring pressure plate of the reactor variable spring support.

[0022] In the figure: 1. disc spring outer tube; 2. disc spring guide tube; 3. disc spring base; 4. disc spring pressure plate; 5. disc spring; 6. positioning cover plate; 7. adjustment stud; 8. lower displacement stud; 9. lower displacement hole; 10. load tube; 11. insulation board; 12. bolt; 13. support bottom; 14. PTFE slide plate; 15. reactor support steel beam; 16. lower displacement hole. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and the accompanying descriptions.

[0024] A reactor variable spring support includes a disc spring outer cylinder 1, a support bottom 13 is provided at the bottom of the disc spring outer cylinder 1, a polytetrafluoroethylene slide plate 14 is provided at the bottom of the support bottom 13, and the polytetrafluoroethylene slide plate 14 is connected to a reactor support steel beam 15. When the reactor generates thermal expansion displacement during operation, the polytetrafluoroethylene slide plate 14 can compensate for the horizontal displacement of the reactor.

[0025] A disc spring guide tube 2 is provided inside the disc spring outer tube 1, and two groups of disc springs are provided outside the disc spring guide tube 2. Each group of disc springs includes two disc springs 5 ​​arranged in a matched manner. A disc spring base 3 is provided at the bottom of the disc spring guide tube 1, and a disc spring pressure plate 4 is provided on the outer wall of the disc spring guide tube 1. The disc spring 5 is located between the disc spring base 3 and the disc spring pressure plate 4.

[0026] A positioning cover plate 6 is provided on the top of the disc spring outer cylinder 1. The positioning cover plate 6 has 6 threaded holes evenly arranged along its circumferential direction. The threaded holes are respectively provided with adjustment studs 7 and lower displacement studs 8, and the adjustment studs 7 and lower displacement studs 8 are distributed at intervals. Three lower displacement holes 16 are provided on the top of the disc spring pressure plate 4. The bottom of the lower displacement stud 8 is opposite to the lower displacement hole 16. One end of the adjustment stud 7 is sleeved with a bolt 12 and passes through the threaded hole. The positioning cover plate 6 is connected to the disc spring outer cylinder through the bolt 12. One end of the lower displacement stud 8 is sleeved with a bolt 12 and passes through the threaded hole. The bottom of the lower displacement stud 8 is located in the lower displacement hole 16. The length of the lower displacement stud 8 is the same as that of the adjustment stud 7. By adjusting the bolt on the lower displacement stud 8 and rotating the load cylinder, the vertical displacement of the reactor variable spring support is adjusted to supplement the deflection displacement of the reactor support steel beam.

[0027] A load tube 10 is rotatably provided inside the top of the disc spring outer tube 1. The load tube 10 is provided with threads. A threaded hole is provided in the middle of the positioning cover plate 6. The load tube 10 is threadedly connected to the positioning cover plate 6. A heat insulation plate 11 is provided on the top of the load tube 10. A mounting groove is provided on the top of the heat insulation plate 11 for placing the reactor catalyst support beam. Threaded holes are provided at the four corners of the heat insulation plate 11, which is connected to the reactor catalyst support beam as a whole through bolts and nuts. At the same time, a gasket is provided under the nut.

[0028] The outer wall of the disc spring outer cylinder 1 is provided with a displacement scale, which can display the height of the reactor variable spring support.

[0029] When in use, it is connected to the reactor support steel beam 15 through the polytetrafluoroethylene slide plate 14. When in an unloaded state, loosen the nut, rotate the load cylinder 10, adjust the nut 12 on the adjustment stud 7 to be close to the positioning cover plate 6, and the nut 12 on the lower displacement stud 8 to be close to the positioning cover plate 6, tighten the nut 12, and then connect the reactor catalyst support beam 15 to the insulation board 11 through bolts and nuts; when loading 2 layers, or generating thermal expansion displacement, considering that the load is relatively large, the reactor can be supported (hoisted) by a jack (or lifting equipment) first, loosen the nut 12, and twist the nut 12 on the lower displacement stud 7 in the direction away from the positioning cover plate to deform the disc spring 5, loosen the jack or lifting equipment, and then connect the reactor catalyst support beam to the insulation board through bolts and nuts. At this time, the load of the reactor variable spring support becomes larger.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made to the above embodiment based on the technical essence of the present invention should be included in the protection scope of the present invention.

Claims

1. A reactor variable spring support, characterized in that: The invention comprises a disc spring outer cylinder (1), wherein a disc spring guide tube (2) is arranged inside the disc spring outer cylinder (1), a disc spring (5) is arranged outside the disc spring guide tube (2), a disc spring base (3) is arranged at the bottom of the disc spring guide tube (2), a disc spring pressure plate (4) is arranged on the outer wall of the disc spring guide tube (2), and the disc spring (5) is located between the disc spring base (3) and the disc spring pressure plate (4); a positioning cover plate (6) is arranged at the top of the disc spring outer cylinder (1), and the positioning cover plate (6) is evenly provided with N adjustment studs (7) and N lower displacement studs along its circumferential direction (8), N≥3, the top of the disc spring pressure plate (4) is provided with N lower displacement holes (16), the bottom of the lower displacement stud (8) is opposite to the lower displacement hole (16), and is connected to the positioning cover plate (6) by adjusting the stud (7), and the deflection displacement of the reactor support steel beam (15) is compensated by adjusting the lower displacement stud (8); the positioning cover plate (6) is rotatably provided with a load tube (10), and the top of the load tube (10) is provided with a heat insulation plate (11); the bottom of the disc spring outer tube (1) is slidably connected to the reactor support steel beam (15).

2. The reactor variable spring support according to claim 1, characterized in that: M groups of disc springs are arranged between the disc spring base (3) and the disc spring pressure plate (4), where M≥1, and each group of disc springs includes two disc springs (5) arranged in a matching manner.

3. The reactor variable spring support according to claim 1, characterized in that: The bottom of the disc spring outer tube (1) is provided with a support bottom (13), and the bottom of the support bottom (13) is provided with a polytetrafluoroethylene slide plate (14), which is connected to the reactor support steel beam (15) via the polytetrafluoroethylene slide plate (14).

4. The reactor variable spring support according to claim 1, characterized in that: The adjusting studs (7) and the lower displacement studs (8) are distributed at intervals.

5. The reactor variable spring support according to claim 1, characterized in that: The positioning cover plate (6) is provided with a threaded hole, and the adjustment stud (7) and the lower displacement stud (8) are connected to the positioning cover plate via nuts (12).

6. The reactor variable spring support according to claim 1, characterized in that: The outer wall of the disc spring outer cylinder (1) is provided with a displacement scale which can display the height supported by the variable spring support of the reactor.

7. The reactor variable spring support according to claim 1, characterized in that: The heat insulation plate (11) is connected to the reactor catalyst support beam via bolts.

8. The reactor variable spring support according to claim 1, characterized in that: The top of the heat insulation plate (11) is provided with a mounting groove for placing the reactor catalyst support beam.

9. The reactor variable spring support according to claim 1, characterized in that: The load tube (10) is provided with threads, and a threaded hole is provided in the middle of the positioning cover plate (6).

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