Superheater for gas-steam boiler

Abstract

The utility model relates to the technical field of superheaters, and discloses a superheater for a gas-steam boiler, which comprises a first spring seat, a second spring seat and a first spring, and the first spring seat is detachably connected with a straight pipe section of a coiled pipe; the second spring seat is detachably connected with the straight pipe section of the coiled pipe; a first spring is arranged between the first spring seat and the second spring seat; the first spring seat comprises a first pipe clamp, and the first pipe clamp is connected with a first semi-ring seat for placing a first spring; first bolts are mounted in bolt holes of the two first pipe clamps; the second spring seat comprises a second pipe clamp, and the bottom surface of the second pipe clamp is connected with a second semi-ring seat; bolt holes of the two second pipe clamps are provided with second bolts; a guide column is arranged on the second semi-ring seat, a sliding ring is connected to the guide column in a sliding mode, the sliding ring is fixed through a third bolt, and the bottom face of the sliding ring abuts against the first spring; through the arrangement of the detachable first spring, a good anti-abrasion effect is achieved, cigarette ash attached in the operation process can be removed by shaking the first spring, and the cleaning effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of superheaters, in particular to a superheater for a gas steam boiler. Background Art

[0002] The superheater is a component in the boiler that further heats the steam from the saturation temperature to the superheat temperature. It is also called a steam superheater. Superheaters can be divided into convection, radiation and semi-radiation types according to the heat transfer method. They can be divided into serpentine tube type, screen type, wall type and wall-wrapped type according to the structural characteristics. They are all composed of several parallel tubes and inlet and outlet headers. In power stations, locomotives and marine boilers, superheaters are generally installed to improve the cycle thermal efficiency of the entire steam power unit.

[0003] A Chinese patent application with application number 201620690890.8 discloses a high-temperature superheater, comprising an inlet mixer, an outlet mixer and several serpentine tubes connected in parallel between the inlet mixer and the outlet mixer, wherein the windward surface of the lowest serpentine tube is provided with one or more anti-wear strips, and the windward surfaces of the remaining serpentine tubes are provided with one or more anti-wear strips, and the number of anti-wear strips is less than the number of anti-wear strips of the lowest serpentine tube, and the leeward surfaces of all serpentine tubes are provided with one anti-wear strip.

[0004] However, from the actual operation situation on site, the anti-wear strip is fixedly connected to the serpentine pipe and cannot be disassembled. After long-term use, cigarette ash adheres to the anti-wear strip, there are dead corners for cleaning, and the cleaning effect is poor. Summary of the invention

[0005] The utility model aims to provide a superheater for a gas steam boiler, which effectively solves the problems proposed in the above-mentioned background technology that the existing anti-wear strips are fixedly connected to the serpentine pipe and cannot be disassembled, soot adheres to the anti-wear strips after long-term use, there are dead corners for cleaning, and the cleaning effect is poor.

[0006] The technical solution adopted by the utility model is as follows: a superheater for a gas steam boiler, comprising a first spring seat, a second spring seat, and a first spring, wherein the first spring seat is detachably connected to the straight pipe section of the serpentine pipe; the second spring seat is detachably connected to the straight pipe section of the serpentine pipe; a first spring is arranged between the first spring seat and the second spring seat, and an accommodation gap is provided between the first spring and the serpentine pipe; the first spring seat comprises a first pipe clamp, the number of the first pipe clamps is 2, the shape of the first pipe clamp is C-shaped, the first pipe clamp has a bolt hole, the top surface of the first pipe clamp is connected to a first semi-ring seat, and the first semi-ring seat is provided to the first spring seat. A first spring is placed on the half ring seat; the first bolts are installed on the bolt holes of the two first pipe clamps; the second spring seat includes a second pipe clamp, the number of the second pipe clamps is 2, the shape of the second pipe clamps is C-shaped, the second pipe clamp has a bolt hole, and the bottom surface of the second pipe clamp is connected to the second half ring seat; the bolt holes of the two second pipe clamps are installed with second bolts; the second half ring seat is provided with a guide column, the guide column is slidably connected with a slip ring, the number of the slip rings is 2, the shape of the slip rings is C-shaped, the slip rings are fixed by third bolts, and the bottom surface of the slip rings is against the first spring.

[0007] The beneficial effect of the utility model is that the utility model has a good anti-wear effect by setting a detachable first spring, and the soot attached during operation can be removed by shaking the first spring, so the cleaning effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the main structure of this application.

[0009] Figure 2 It is a schematic diagram of the three-dimensional structure of the first spring seat.

[0010] Figure 3 It is a schematic diagram of the three-dimensional structure of the second spring seat.

[0011] Figure 4 It is a schematic diagram of the three-dimensional structure of the scraper.

[0012] Figure 5 It is a schematic diagram of the main structure of the air guide plate.

[0013] Figure 6 It is a schematic diagram of the top view structure of the air guide plate.

[0014] Figure 7 It is a schematic diagram of the main structure of the impact plate and the lifting mechanism.

[0015] Figure 8 It is a schematic diagram of the main cross-sectional structure of the machine base.

[0016] Fig. 9 It is a side view structural diagram of the machine base.

[0017] Fig.10 It is a schematic diagram of the structure of the machine base viewed from above.

[0018] Fig.11 It is a schematic diagram of the side cross-sectional structure of the machine base.

[0019] Fig.12 It is a schematic diagram of the three-dimensional structure of the machine base.

[0020] Fig.13 This is a schematic diagram of the main structure of the serpentine tube.

[0021] Fig.14 This is a schematic diagram of the main structure of the import header and the export header.

[0022] Fig.15 It is a schematic diagram of the side structure of the connecting pipe.

[0023] Fig.16 A schematic diagram of the side structure of the bracket.

[0024] In the figure: 1, first spring seat; 2, second spring seat; 3, first spring; 4, serpentine tube; 5, first pipe clamp; 6, bolt hole; 7, first half ring seat; 8, first bolt; 9, second pipe clamp; 10, second half ring seat; 11, second bolt; 12, guide column; 13, sliding ring; 14, third bolt; 15, scraper; 16, support; 17, fourth bolt; 18, air guide plate; 19, impact plate; 20, lifting mechanism; 21, housing; 22, base; 23, first slideway; 24, first slideway 2. Platform; 25. Limiting column; 26. Push rod; 27. Extension rod; 28. Groove; 29. ​​First wedge block; 30. Guide column; 31. Adjusting nut; 32. Second spring; 33. Stop column; 34. Third spring; 35. Second wedge block; 36. Second slideway; 37. Second slide; 38. Drawbar; 39. Telescopic rod; 40. Inlet header; 41. Steam guide pipe; 42. Outlet header; 43. Comb plate; 44. Bracket; 45. Membrane wall in furnace; 46. Rib plate; 47. Connecting pipe. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings. The following description is only used to illustrate the technical solution of the utility model rather than to limit it.

[0026] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention; in addition, the terms "first", "second" and the like are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0027] like Figure 1~Figure 3 As shown, a superheater for a gas steam boiler comprises a first spring seat 1, a second spring seat 2, and a first spring 3. The first spring seat 1 is detachably connected to the straight pipe section of the serpentine pipe 4; the second spring seat 2 is detachably connected to the straight pipe section of the serpentine pipe 4; the second spring seat 2 is located above the first spring seat 1, and a first spring 3 is installed between the first spring seat 1 and the second spring seat 2. There is an accommodation gap between the first spring 3 and the serpentine pipe 4. By installing the first spring 3 on the serpentine pipe 4, it can play a guiding and anti-wear role. After the smoke comes over, it rises in a spiral, reducing the erosion of the serpentine pipe 4 by the smoke; the first spring seat 1 comprises a first pipe clamp 5, the number of the first pipe clamps 5 is 2, the shape of the first pipe clamp 5 is C-shaped, the first pipe clamp 5 has a bolt hole 6, the top surface of the first pipe clamp 5 is connected to a first semi-ring seat 7, and the first semi-ring seat 7 is The first spring 3 is placed thereon; the first bolt 8 is installed on the bolt holes 6 of the two first pipe clamps 5; the second spring seat 2 includes a second pipe clamp 9, the number of the second pipe clamps 9 is 2, the shape of the second pipe clamp 9 is C-shaped, the second pipe clamp 9 has a bolt hole 6, and the bottom surface of the second pipe clamp 9 is connected to a second semi-ring seat 10; the bolt holes 6 of the two second pipe clamps 9 are installed with second bolts 11; the second semi-ring seat 10 is installed with a guide column 12, and a slip ring 13 is slidably connected to the guide column 12, the number of the slip rings 13 is 2, the shape of the slip ring 13 is C-shaped, the slip ring 13 is fixed by a third bolt 14, and the bottom surface of the slip ring 13 is against the first spring 3; the present application has a good anti-wear effect by setting a detachable first spring 3, and the soot attached during operation can be removed by shaking the first spring 3, and the cleaning effect is good.

[0028] like Figure 4 As shown, as an optimization of the embodiment, a plurality of scrapers 15 are fixed on the first spring 3, the scrapers 15 are spirally arranged, the scrapers 15 are arc-shaped, and the inner side surface of the scrapers 15 is a slope surface structure, which is convenient for cleaning the soot on the outer wall of the serpentine tube 4, and the cleaning effect is further improved.

[0029] like Figure 5 and Figure 6As shown, as an optimization of the embodiment, a support 16 is installed on the first pipe clamp 5 and the second pipe clamp 9, and the support 16 is located on the windward side. A wind guide plate 18 is connected to the support 16 through a fourth bolt 17. The wind guide plate 18 is ridge-shaped, and the wind guide plate 18 can further reduce the erosion of the serpentine tube 4 by smoke.

[0030] like Figure 7 to Figure 12As shown, as an optimization of the embodiment, considering that the smoke and dust on the serpentine tube 4 cannot be cleaned in real time, the smoke and dust greatly reduces the evaporation effect of the superheater, so the side wall of the slip ring 13 is connected with an impact plate 19; it also includes a lifting mechanism 20 for knocking the impact plate 19, and the lifting mechanism 20 includes a casing 21 arranged outside the furnace body, a base 22 is installed in the casing 21, a first slide 23 is opened on the base 22, and a first slide 24 is slidably connected in the first slide 23; a limiting column 25 is installed on the first slide 23, and the limiting column 25 is used to limit the descending position of the first slide 24; a push rod 26 is installed at the lower end of the first slide 24, and the push rod 26 is used to extend into the furnace body, and the lower end of the push rod 26 The end is connected with an extension rod 27, which is used to knock the impact plate 19; the side wall of the first slide 24 is provided with a groove 28, in which a first wedge block 29 is slidably connected, and a guide column 30 is installed on the first wedge block 29, and the guide column 30 extends to the outside of the groove 28 and is connected with an adjusting nut 31, and the adjusting nut 31 can adjust the extension length of the first wedge block 29, and the side wall of the guide column 30 is sleeved with a second spring 32, and the second spring 32 is elastically connected between the first wedge block 29 and the groove 28; the second spring 32 makes the inclined surface of the first wedge block 29 extend out of the groove 28; the top surface of the first wedge block 29 outside the groove 28 is installed with a blocking column 33; A third spring 34 is installed at the upper end of the first slide 24, and the tail end of the third spring 34 is fixed to the base 22; a second wedge block 35 is installed on the base 22, and the second wedge block 35 collides with the blocking column 33, so that the first wedge block 29 is retracted into the groove 28; a second slide 36 is provided on the base 22, and a second slide 37 is slidably connected in the second slide 36, and a traction rod 38 is installed on the second slide 37, and the traction rod 38 collides with the first wedge block 29, so that the first slide 24 moves upward; a telescopic rod 39 is installed at the upper end of the second slide 37, and the telescopic rod 39 can be selected from one of a hydraulic cylinder, an air cylinder and an electric push rod, and the tail end of the telescopic rod 39 is fixed to the base 22 ; Impact process: the telescopic rod 39 drives the second slide 37 to move upward, the traction rod 38 collides with the first wedge block 29, so that the second slide 37 starts to move upward, and the second spring 32 contracts. When the blocking column 33 collides with the second wedge block 35, the first wedge block 29 enters the groove 28, the traction rod 38 disengages from the first wedge block 29, and the second spring 32 expands, so that the second slide 37 moves downward, and the extension rod 27 can knock the impact plate 19, and then the slip ring 13 pushes the first spring 3 to deform, so that the scraper 15 cleans the smoke and dust on the serpentine tube 4. At the same time, the smoke and dust on the first spring 3 also automatically falls off due to deformation, thereby realizing real-time cleaning of the smoke and dust and ensuring the evaporation effect of the serpentine tube 4.

[0031] As an optimization of the embodiment, the outer diameter of the serpentine tube 4 is 38 mm, and the material is high-temperature resistant high-quality low-carbon steel or chromium-molybdenum alloy steel.

[0032] The serpentine tube 4 has a relatively dense tube group and is arranged in a flue with a flue gas temperature of 450-1000°C and is flushed horizontally and vertically by the flue gas; the flue gas mainly transfers heat to the tube in a convection manner, and also partially absorbs heat by radiation.

[0033] like Fig.13 and Fig.14 As shown, as an optimization of the embodiment, it also includes an inlet header 40 connected to the serpentine tube 4, the inlet header 40 is connected to a steam guide pipe 41, and the steam guide pipe 41 is used to transport saturated water vapor to the inlet header 40; it also includes an outlet header 42 connected to the serpentine tube 4.

[0034] like Fig.15 and Fig.16 As shown, as an optimization of the embodiment, it also includes a comb plate 43 that supports the serpentine tube 4, the comb plate 43 is hung on a bracket 44, the bracket 44 is fixed to a membrane wall 45 in the furnace, and a rib plate 46 is connected to the bracket 44.

[0035] like Fig.15 As shown, as an optimization of the embodiment, a connecting pipe 47 is further installed between the outlet header 42 and the inlet header 40 .

[0036] Superheater steam process: The saturated water vapor from the boiler enters the inlet header 40 through the steam guide pipe 41, is then heated by the serpentine pipe 4 to become superheated steam, and is then led out to the use equipment through the outlet header 42. The unheated or low-temperature steam is circulated back to the inlet header 40 through the connecting pipe 47 for cyclic heating, thereby improving the utilization rate.

[0037] Although the present invention has been described in detail with reference to the aforementioned examples, those skilled in the art can still make and modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A superheater for a gas steam boiler, comprising a first spring seat (1), a second spring seat (2), and a first spring (3), characterized in that: The first spring seat (1) is detachably connected to the straight tube section of the serpentine tube (4); the second spring seat (2) is detachably connected to the straight tube section of the serpentine tube (4); a first spring (3) is provided between the first spring seat (1) and the second spring seat (2); the first spring seat (1) comprises a first tube clamp (5), the number of the first tube clamps (5) is two, the shape of the first tube clamps (5) is C-shaped, the first tube clamps (5) have bolt holes (6), the top surface of the first tube clamp (5) is connected to a first semi-ring seat (7), and the first semi-ring seat (7) is used to place the first spring (3); the bolt holes (6) of the two first tube clamps (5) are installed with first bolts (8); the second spring seat ( 2) comprising a second pipe clamp (9), the number of the second pipe clamps (9) being two, the shape of the second pipe clamps (9) being C-shaped, the second pipe clamp (9) being provided with a bolt hole (6), the bottom surface of the second pipe clamp (9) being connected to a second half ring seat (10); second bolts (11) being installed on the bolt holes (6) of the two second pipe clamps (9); the second half ring seat (10) being provided with a guide column (12), the guide column (12) being slidably connected to a slip ring (13), the number of the slip rings (13) being two, the shape of the slip rings (13) being C-shaped, the slip rings (13) being fixed by a third bolt (14), the bottom surface of the slip ring (13) being against the first spring (3).

2. A superheater for a gas steam boiler according to claim 1, characterized in that: A plurality of scrapers (15) are provided on the first spring (3), the scrapers (15) are arranged in a spiral manner, the scrapers (15) are in an arc shape, and the inner side surfaces of the scrapers (15) are in a slope surface structure.

3. A superheater for a gas steam boiler according to claim 1, characterized in that: A support (16) is provided on the first pipe clamp (5) and the second pipe clamp (9). The support (16) is located on the windward side. A wind guide plate (18) is connected to the support (16) via a fourth bolt (17). The wind guide plate (18) is shaped like a roof ridge.

4. A superheater for a gas steam boiler according to claim 1, characterized in that: The side wall of the slip ring (13) is connected to a striking plate (19); the slip ring (13) also includes a lifting mechanism (20) for striking the striking plate (19); the lifting mechanism (20) includes a casing (21) arranged outside the furnace body; a base (22) is arranged in the casing (21); a first slideway (23) is provided on the base (22); a first slideway (23) is slidably connected to a first slideway (24); a limiting column (25) is provided on the first slideway (23); the limiting column (25) is used to limit the descending position of the first slideway (24); the first slideway (23) is provided with a limiting column (25); the limiting column (25) is used to limit the descending position of the first slideway (24); the first slideway (24) is provided with a limiting column (25); the first slideway (23) is provided with a limiting column (25); the first slideway (24 ... A push rod (26) is provided at the lower end of the first slide (24), the push rod (26) is used to extend into the furnace body, and the lower end of the push rod (26) is connected to an extension rod (27), and the extension rod (27) is used to knock the impact plate (19); a groove (28) is opened on the side wall of the first slide (24), and a first wedge block (29) is slidably connected in the groove (28), and a guide column (30) is provided on the first wedge block (29), and the guide column (30) extends to the outside of the groove (28) and is connected to an adjusting nut (31), and the side wall of the guide column (30) is sleeved with a second The first wedge block (29) and the groove (28) are provided with a spring (32), and the second spring (32) is elastically connected between the first wedge block (29) and the groove (28); the second spring (32) makes the inclined surface of the first wedge block (29) extend out of the groove (28); a stopper (33) is provided on the top surface of the first wedge block (29) outside the groove (28); a third spring (34) is provided at the upper end of the first slide table (24), and the tail end of the third spring (34) is fixed to the machine base (22); a second wedge block (35) is provided on the machine base (22), and the second wedge block (35) is provided on the machine base (22); The wedge-shaped block (35) collides with the blocking column (33), so that the first wedge-shaped block (29) is retracted into the groove (28); a second slideway (36) is provided on the machine base (22), a second slideway (36) is slidably connected with a second slide table (37), a traction rod (38) is provided on the second slide table (37), and the traction rod (38) collides with the first wedge-shaped block (29), so that the first slide table (24) moves upward; a telescopic rod (39) is provided at the upper end of the second slide table (37), and the tail end of the telescopic rod (39) is fixed to the machine base (22).

5. A superheater for a gas steam boiler according to claim 1, characterized in that: The outer diameter of the serpentine tube (4) is 38 mm.

6. A superheater for a gas steam boiler according to claim 1, characterized in that: The material of the serpentine tube (4) is high-temperature resistant high-quality low-carbon steel or chromium-molybdenum alloy steel.

7. A superheater for a gas steam boiler according to claim 1, characterized in that: It also includes an inlet header (40) connected to the serpentine tube (4), the inlet header (40) being connected to a steam guide pipe (41), the steam guide pipe (41) being used to transport saturated water vapor to the inlet header (40); and an outlet header (42) connected to the serpentine tube (4).

8. A superheater for a gas steam boiler according to claim 7, characterized in that: It also includes a comb-shaped plate (43) that supports the serpentine tube (4). The comb-shaped plate (43) is hung on a bracket (44). The bracket (44) is fixed to a membrane wall (45) in the furnace. A rib plate (46) is connected to the bracket (44).

9. A superheater for a gas steam boiler according to claim 7, characterized in that: A connecting pipe (47) is also installed between the outlet header (42) and the inlet header (40).

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