Limiting device for downcomer of waste incineration boiler
By combining pre-embedded steel plates, hook plates, supports, brackets, and limiting plates, the problem of complex structure and high cost of the limiting device for the downcomer pipe of a waste incineration boiler is solved, achieving a compact and flexible layout and a stable limiting effect.
Patent Information
- Application Number
- CN202423076716.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-12
AI Technical Summary
The limiting devices for the downcomer pipes of existing waste incineration boilers are complex in structure, difficult to arrange, and costly, making them difficult to arrange efficiently in a limited space.
The system employs a combination structure of pre-embedded steel plates, hook plates, supports, brackets, and limiting plates. The hook plates and limiting plates work together to limit the downcomer pipe to the water-cooled wall or steel frame, while the supports and brackets provide support, simplifying the structure and making full use of space.
It achieves flexible layout in a limited space and low-cost downcomer limiting, can bear part of the weight of the downcomer, and remains stable during boiler operation.
Smart Images
Figure CN223525148U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a garbage incineration boiler, specifically relates to a limiting device of garbage incineration boiler downcomer. BACKGROUND
[0002] Garbage incineration is advantageous to realize the harmlessness, reduction and resource utilization of municipal solid waste. With the change of people's living habits, garbage incineration boiler appears the trend of large-scale. For example, the garbage disposal capacity of garbage incineration boiler several years ago is about 500t / d, and now there are large-scale garbage incineration boilers of 750t / d and above. At the same time, limited by the use area and economic benefits, the structure design of garbage incineration boiler tends to be more and more compact, and most of them adopt the centralized downcomer arrangement mode; due to the limited space, the downcomer needs to be configured with a combination of hangers and supporting steel frames, which not only has a complex structure, but also is difficult to arrange and has a high cost. SUMMARY
[0003] The utility model aims at overcoming the insufficient of the prior art, providing a limiting device for garbage incineration boiler downcomer, which can effectively bear part of the weight of the downcomer, and has compact structure, flexible arrangement and low cost.
[0004] The utility model provides a technical scheme of a limiting device for garbage incineration boiler downcomer, characterized by comprising a pre-embedded steel plate connected with the downcomer, a hook plate connected with the pre-embedded steel plate, a support frame connected with the water-cooled wall pipe, a support connected with the support frame, and a limiting plate fixed on the horizontal plane of the support and supporting the hook plate.
[0005] The hook plate is vertically arranged and has one side edge welded and fixed with the pre-embedded steel plate, and an upper slot is formed in the hook plate and opens downward to cooperate with the limiting plate.
[0006] The support frame comprises a plurality of supporting small steel plates connected with the plurality of water-cooled wall pipes one by one, and a support flat steel plate vertically arranged and having an inner side surface connected with the plurality of supporting small steel plates.
[0007] The support comprises two support small steel plates parallel to each other and vertically fixed on the outer side surface of the support flat steel plate, and a support flat steel plate horizontally arranged and having a bottom end surface connected with the two support small steel plates.
[0008] The limiting plate comprises a limiting steel plate vertically arranged on the support flat steel plate and supporting the hook plate, and a plurality of triangular small steel plates vertically arranged between the limiting steel plate and the support flat steel plate.
[0009] The limiting steel plate is perpendicular to the hook plate and has a lower slot opening upward at the top end to be embedded with the upper slot.
[0010] The plurality of triangular small steel plates are all right-angled triangles, and two right-angled sides of each right-angled triangle are connected with the limiting steel plate and the support flat steel plate respectively.
[0011] The plurality of triangular small steel plates are arranged in two groups, and two triangular small steel plates in each group are arranged on two sides of the limiting steel plate.
[0012] The lower notch is located at the middle position of the limiting steel plate, and the plurality of triangular small steel plates are arranged on two sides of the lower notch to leave space for the insertion and fitting of the limiting steel plate and the hook plate.
[0013] The beneficial effect of the utility model is that when the boiler operates, the downcomer is heated and expanded, and is limited on the water cooling wall or the steel frame through the hook plate and the limiting plate, and can also bear part of the weight of the downcomer. The limiting device is compact in structure, can fully utilize the limited space, is flexible in arrangement, and is low in cost. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a front view structural schematic diagram of the utility model embodiment (namely the A view of Figure 9 ).
[0015] Figure 2 It is a top view structural schematic diagram of the utility model embodiment.
[0016] Figure 3 It is a front view structural schematic diagram of the hook plate in the utility model embodiment.
[0017] Figure 4 It is a front view structural schematic diagram of the limiting plate in the utility model embodiment.
[0018] Figure 5 It is a left view structural schematic diagram of the limiting plate in the utility model embodiment
[0019] Figure 6 It is a front view structural schematic diagram of the support in the utility model embodiment.
[0020] Figure 7 It is a right view structural schematic diagram of the support in the utility model embodiment.
[0021] Figure 8 It is a front view structural schematic diagram of the support frame in the utility model embodiment.
[0022] Figure 9 It is an installation position schematic diagram of the utility model embodiment in the waste incineration boiler.
[0023] Figure 10 It is a steam-water pipeline structural schematic diagram of the conventional waste incineration boiler.
[0024] Fig. the label: down pipe 1, embedded steel plate 2, hook plate 3, limit plate 4, support 5, support frame 6, water cooling wall pipe 7, limit steel plate 8, triangular small steel plate 9, support flat steel plate 10, support small steel plate 11, support frame flat steel plate 12, support small steel plate 13, limiting device 15, steam drum 16, steel frame column 17, steel frame beam 18, down pipe hanger 19, water cooling wall 20, water cooling wall header 22, evaporator 22. DETAILED DESCRIPTION
[0025] The embodiments shown in the drawings are further described below.
[0026] As Figure 10 shown, in the existing garbage incineration boiler steam-water pipeline, the water and steam-water saturation in the steam drum 16 along the down pipe 1 into the water cooling wall header 21 and the evaporator 22, and then to the top connecting pipe 23, and then into the steam drum, forming a steam-water circulation (flow direction as shown by the arrow in the figure).
[0027] The existing down pipe limiting device, including a plurality of steel frame columns 17 fixed vertically on the foundation, a plurality of steel frame beams 18 transversely arranged on the plurality of steel frame columns, and a plurality of (four shown in the figure) down pipe hangers 19 fixed on the steel frame beams; obviously, due to the limited space, resulting in the limiting device structure is complex, difficult to arrange and high cost.
[0028] The utility model makes improvements, discard the above-mentioned steel frame column, steel frame beam and down pipe hanger, the provided several limiting devices 15 in the installation position of the garbage incineration boiler as Figure 9 shown (four limiting devices are shown in the figure).
[0029] As Figures 1-8 shown, each down pipe limiting device, including embedded steel plate 2, hook plate 3, limit plate 4, support 5 and support frame 6.
[0030] The embedded steel plate 2 is welded in advance on the position of the down pipe 1 where the limiting is needed; the hook plate 3 is welded on the embedded steel plate 2; the support frame 6 is welded on the appropriate position of the water cooling wall according to the design requirements and the site installation condition (welded and fixed with the water cooling wall pipe) ; the support 5 is welded on the support frame 6; the limit plate 4 is welded on the appropriate position of the support 5 according to the actual position of the hook plate 3 on site; the hook plate 3 and the limit plate 4 cooperate with each other to limit the down pipe 1 on the water cooling wall 7.
[0031] The support frame 6 includes a support frame flat steel plate 12 and a plurality of support small steel plates 13. The distance between the plurality of support small steel plates 13 is adjusted according to the distance of the water cooling wall pipe, and the support small steel plates 13 are generally arranged between the two water cooling wall pipes and welded and fixed with the water cooling wall pipe; the number of the plurality of support small steel plates 13 is set according to the actual needs, and generally 4-6 pieces are set.
[0032] The support 5 is composed of a support flat steel plate 10 and several support small steel plates 11. The distance between the several support small steel plates 11 is set according to actual needs, and is generally controlled at 80-100 mm; the number of the several support small steel plates 11 is set according to actual needs, and is generally set at 2-4.
[0033] The limiting plate 4 is composed of a limiting steel plate 8 and four triangular small steel plates 9. The limiting steel plate is provided with a certain size notch, and the thickness of the limiting steel plate is controlled at 10-20 mm.
[0034] The hook plate is also provided with a certain size notch, and the thickness of the hook plate is controlled at 10-20 mm.
[0035] Obviously, the utility model has compact structure, can fully utilize limited space, is arranged flexibly, and has lower cost. When the boiler runs, the downcomer is heated and expanded, the downcomer is limited on the water cooling wall or the steel frame through the device, and part of the weight of the downcomer can also be borne.
Claims
1. A limiting device for a descent pipe of a waste incineration boiler; characterized in that: The limiting device comprises a pre-buried steel plate (2) connected with a descending pipe (1), a hook plate (3) connected with the pre-buried steel plate, a support frame connected with a water cooling wall pipe (7), a support (5) connected with the support frame, and a limiting plate (4) fixed on a horizontal plane of the support and supporting the hook plate.
2. The limiting device of the waste incineration boiler downcomer according to claim 1, characterized in that: The hook plate is vertically arranged and has one side edge welded with the pre-buried steel plate, and an upper notch is formed on the hook plate and faces downward to cooperate with the limiting plate.
3. The limiting device of the waste incineration boiler downcomer according to claim 2, characterized in that: The support frame comprises a plurality of support small steel plates (13) connected with the water cooling wall pipes one by one, and a support flat steel plate (12) vertically arranged and having an inner side plane connected with the plurality of support small steel plates.
4. The limiting device of the waste incineration boiler downcomer according to claim 3, characterized in that: The support comprises two support small steel plates (11) fixed on an outer side plane of the support flat steel plate and parallel to each other, and a support flat steel plate (10) horizontally arranged and having a bottom end plane connected with the two support small steel plates.
5. The limiting device of the waste incineration boiler downcomer according to claim 4, characterized in that: The limiting plate comprises a limiting steel plate (8) vertically arranged on the support flat steel plate and supporting the hook plate, and a plurality of triangular small steel plates (9) vertically arranged between the limiting steel plate and the support flat steel plate.
6. The limiting device of the waste incineration boiler downcomer according to claim 5, characterized in that: The limiting steel plate is arranged perpendicularly to the hook plate and has a lower notch formed at a top end and facing upward to be fitted with the upper notch.
7. The limiting device of the waste incineration boiler downcomer according to claim 6, characterized in that: The plurality of triangular small steel plates are all right-angled triangles, and two right-angled sides of each right-angled triangle are connected with the limiting steel plate and the support flat steel plate, respectively.
8. The limiting device of the waste incineration boiler downcomer according to claim 7, characterized in that: The plurality of triangular small steel plates are arranged in two groups, and two triangular small steel plates of each group are arranged on two side planes of the limiting steel plate, respectively.
9. The limiting device of the waste incineration boiler downcomer according to claim 8, characterized in that: The lower notch is located at a middle position of the limiting steel plate, and the plurality of triangular small steel plates are arranged on two sides of the lower notch to leave space for the fitting of the limiting steel plate and the hook plate.