Column foot of large-flue boiler
By optimizing the structural design of the column base of the large flue boiler, and adopting a combination of steel columns, column base plates, stiffening plates, main reinforcing bars, steel mesh and multi-layer casting layers, the problems of insufficient strength and poor durability of the column base under high temperature, high pressure and corrosive environment were solved, and the stability and durability were improved.
Patent Information
- Application Number
- CN202520151353.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-01-22
AI Technical Summary
Existing large flue boiler column bases suffer from insufficient strength and poor durability under high temperature, high pressure and corrosive environments.
The main structure adopts a column base structure, including steel columns, column base plates and stiffening plates, combined with main steel bars, steel mesh, short column reinforcing bars, stirrup assemblies and multi-layer casting layers, and improves structural stability and strength through limiting and fixing measures.
It improves the stability and durability of the column base, enabling it to better support large flue boilers. It has a reasonable structure, high strength, and good durability.
Smart Images
Figure CN223805568U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of boiler construction technology, especially to a large flue boiler column foot. BACKGROUND
[0002] The large flue boiler is a kind of high-efficiency waste heat recovery equipment, it is usually used in industrial process to recover the heat in high-temperature flue gas, the design of this kind of boiler allows it to capture heat from the large flue, thereby improving energy efficiency and reducing emissions. In the existing boiler design, as the key component for supporting the weight of the boiler and transmitting thermal stress, the stability and durability of the structure of the column foot are crucial to the safe operation of the entire boiler. However, with the development of boiler equipment towards high parameters and large capacity, the load borne by the column foot is becoming larger and larger. The existing column foot design often has problems such as insufficient strength and poor durability when facing high temperature, high pressure and corrosive environment. SUMMARY
[0003] The utility model aims at providing a large flue boiler column foot to solve the above-mentioned problems existing in the prior art.
[0004] The technical solution of the utility model to solve the above-mentioned technical problems is as follows:
[0005] A large flue boiler column foot, comprising a column foot main body and a bottom pouring layer, the top of the bottom pouring layer is provided with a column foot iron pad, the column foot main body comprises a steel column, a column bottom plate and a stiffener, the column bottom plate is arranged on the top of the column foot iron pad, the stiffener is vertically arranged on the front and rear ends of the top of the column bottom plate, the steel column is vertically arranged on the middle part of the column bottom plate, and the steel column is fixedly connected with the stiffener.
[0006] Further comprising main steel bars vertically arranged at the four corners inside the bottom pouring layer, the upper part of the main steel bars extends out of the top of the bottom pouring layer, the outer side of the main steel bars is provided with a steel bar mesh located inside the bottom pouring layer and vertically and equidistantly distributed with the main steel bars, the inner cavity wall of the steel bar mesh is provided with short column stress steel bars located inside the bottom pouring layer and vertically upward, the short column stress steel bars are fixedly connected with the stiffener, further comprising a first stirrup assembly arranged on the outer side of the main steel bars at the lower end and a second stirrup assembly arranged at the upper end, the top of the bottom pouring layer is poured with a middle pouring layer with the same height as the column foot iron pad, the top of the middle pouring layer is poured with a top pouring layer, and the upper part of the main steel bars is located inside the top pouring layer.
[0007] The utility model discloses beneficial effect is: through setting up the reinforcement net on the main reinforcement, the main reinforcement is positioned, has improved the stability of structure, sets up the short column stress reinforcement after the reinforcement net and pours the bottom pouring layer, then sets up a plurality of column foot pad irons on the bottom pouring layer, places the column foot main body on the column foot pad iron and fixes again, adjusts the levelness of column foot main body, then fixes with stiffened plate after the short column stress reinforcement is bent, then pours the middle pouring layer on the bottom pouring layer, welds first hoop assembly and second hoop assembly on the main reinforcement, pours top pouring layer after the main reinforcement is fixed, completes the installation of whole column foot, and the structure is reasonable, and the fixed stability is high, and the durability is good, can better support the large flue boiler.
[0008] On the basis of the above technical scheme, the utility model still can make following improvement.
[0009] Further, the short column stress reinforcement is bent and arranged, and the short column stress reinforcement is welded with the stiffened plate.
[0010] Further, the first hoop assembly comprises first reinforcing outer ribs and first reinforcing inner ribs, the first reinforcing outer ribs are arranged on the outer side of the main reinforcement, and the first reinforcing inner ribs are equidistantly arranged between the first reinforcing outer ribs on the two sides.
[0011] Further, a first vertical reinforcement is vertically arranged on one side of the first reinforcing outer ribs.
[0012] Further, the second hoop assembly comprises second reinforcing outer ribs and second reinforcing inner ribs, the second reinforcing outer ribs are arranged on the outer side of the main reinforcement, and the second reinforcing inner ribs are equidistantly arranged between the second reinforcing outer ribs on the two sides.
[0013] Further, a second vertical reinforcement is vertically arranged on one side of the second reinforcing outer ribs.
[0014] Further, the middle pouring layer is made of 50-thick high-strength grouting material.
[0015] Further, the top pouring layer is made of C40 fine stone micro-expansion concrete. DRAWINGS
[0016] Figure 1 It is the whole structure schematic diagram of the utility model;
[0017] Figure 2 It is the structure schematic diagram of the column foot main body of the utility model;
[0018] Figure 3 It is the overhead structure schematic diagram of the main reinforcement and the first hoop assembly of the utility model;
[0019] Figure 4The utility model discloses a top view structure schematic diagram of main reinforcement and second hoop assembly.
[0020] In the drawing, the component list represented by each sign is as follows:
[0021] 1, column foot main body, 101, steel column, 102, column bottom plate, 103, stiffened plate, 2, column foot pad iron, 3, bottom pouring layer, 4, middle pouring layer, 5, top pouring layer, 6, main reinforcement, 7, reinforcement net, 8, first hoop assembly, 81, first reinforcing outer muscle, 82, first reinforcing inner muscle, 9, second hoop assembly, 91, second reinforcing outer muscle, 92, second reinforcing inner muscle, 10, first vertical reinforcement, 11, short column stress reinforcement, 12, second vertical reinforcement. DETAILED DESCRIPTION
[0022] The principles and characteristics of the utility model are described below in combination with the drawings, and the examples are only used for explaining the utility model and are not used for limiting the range of the utility model.
[0023] Example 1
[0024] As Figures 1 to 4 shown, a large flue boiler column foot includes column foot main body 1 and bottom pouring layer 3, and the top of bottom pouring layer 3 is provided with column foot pad iron 2; column foot main body 1 includes steel column 101, column bottom plate 102 and stiffened plate 103; column bottom plate 102 is arranged on the top of column foot pad iron 2; stiffened plate 103 is vertically arranged on the front and rear ends of the top of column bottom plate 102; steel column 101 is vertically arranged on the middle part of column bottom plate 102; and steel column 101 is fixedly connected with stiffened plate 103.
[0025] It also includes main reinforcement 6 vertically arranged on the four corners inside bottom pouring layer 3; the upper part of main reinforcement 6 extends out of the top of bottom pouring layer 3; the outer side of main reinforcement 6 is provided with reinforcement net 7 located inside bottom pouring layer 3 and vertically and equidistantly distributed with main reinforcement 6; the inner cavity wall of reinforcement net 7 is provided with short column stress reinforcement 11 located inside bottom pouring layer 3 and vertically upward; short column stress reinforcement 11 is fixedly connected with stiffened plate 103; it also includes first hoop assembly 8 arranged on the outer side of main reinforcement 6 and located at the lower end and second hoop assembly 9 located at the upper end; the top of bottom pouring layer 3 is poured with middle pouring layer 4 which is the same height as column foot pad iron 2; the top of middle pouring layer 4 is poured with top pouring layer 5; and the upper part of main reinforcement 6 is located inside top pouring layer 5.
[0026] The main reinforcement 6 is limited by setting the reinforcement net 7, the stability of the structure is improved, the short column stress reinforcement 11 is set on the reinforcement net 7, the bottom pouring layer 3 is poured afterwards, then the plurality of column foot pads 2 are set on the bottom pouring layer 3, the column foot body 1 is placed on the column foot pad 2 and fixed, the levelness of the column foot body 1 is adjusted, then the short column stress reinforcement 11 is bent and fixed with the stiffened plate 103, then the middle pouring layer 4 is poured on the bottom pouring layer 3, the first hoop assembly 8 and the second hoop assembly 9 are welded on the main reinforcement 6, the main reinforcement 6 is fixed, then the top pouring layer 5 is poured, the installation of the whole column foot is completed, the structure is reasonable, fixed and stable, high in strength and good in durability, and can better support the large flue boiler.
[0027] Embodiment 2
[0028] As shown in the figure, the embodiment is a further improvement on the basis of embodiment 1, and the specific improvements are as follows: Figure 3
[0029] The short column stress reinforcement 11 is bent and set, the short column stress reinforcement 11 is welded with the stiffened plate 103, the bent short column stress reinforcement 11 is convenient for being fixed with the stiffened plate 103, the stability of the column foot body 1 is improved, and the short column stress reinforcement 11 is fixed with the stiffened plate 103 more firmly through welding.
[0030] Embodiment 3
[0031] As shown in the figure, the embodiment is a further improvement on the basis of embodiment 1, and the specific improvements are as follows: Figure 3
[0032] The first hoop assembly 8 comprises a first reinforcing outer muscle 81 and a first reinforcing inner muscle 82, the first reinforcing outer muscle 81 is arranged on the outer side of the main reinforcement 6, and the first reinforcing inner muscle 82 is arranged equidistantly between the two first reinforcing outer muscles 81, so as to fix the upper part of the main reinforcement 6 and constrain the top pouring layer 5, thereby improving the shearing capacity of the column foot body 1. The side of the multilayer first reinforcing outer muscle 81 is vertically provided with a first vertical reinforcement 10, so as to improve the stability and supportability between the multilayer first reinforcing outer muscles 81 and resist longitudinal stress.
[0033] Embodiment 4
[0034] As shown in the figure, the embodiment is a further improvement on the basis of embodiment 1, and the specific improvements are as follows: Figure 4
[0035] The second stirrup assembly 9 includes a second outer reinforcing bar 91 and a second inner reinforcing bar 92. The second outer reinforcing bar 91 is located on the outside of the main reinforcing bar 6, and the second inner reinforcing bar 92 is equidistantly arranged between the two outer reinforcing bars 91, further fixing the upper part of the main reinforcing bar 6 to restrain the top cast-in-place layer 5 and improve the shear resistance of the column base body 1. A second vertical reinforcing bar 12 is vertically arranged on one side of the multi-layered outer reinforcing bars 91 to improve the stability and support between the multi-layered outer reinforcing bars 91 and resist longitudinal stress.
[0036] Example 5
[0037] like Figure 1 As shown, this embodiment is a further improvement on embodiment 1, as detailed below:
[0038] The middle pouring layer 4 is made of 50mm thick high-strength grout, characterized by early strength, high strength, self-flowing properties, and ease of construction. This grout mainly consists of special cementitious materials, expansive materials, high-strength aggregates, and various admixtures, and is suitable for connecting reinforcing bars and steel pipes in precast assembled structures. The top pouring layer 5 is made of C40 fine-aggregate micro-expansion concrete. Micro-expansion concrete achieves moderate expansion during hardening by adding microparticle-shaped expansive agents and controlling the amount of expansive agent and the concrete mix ratio, thereby compensating for concrete shrinkage and improving the structure's crack resistance.
[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A large flue boiler column foot, characterized in that The column foot body (1) and the bottom pouring layer (3) are provided with the column foot iron (2) on the top of the bottom pouring layer (3), the column foot body (1) comprises a steel column (101), a column bottom plate (102) and a stiffening plate (103), the column bottom plate (102) is arranged on the top of the column foot iron (2), the stiffening plate (103) is vertically arranged on the top of the column bottom plate (102) at the front and rear ends, and the steel column (101) is vertically arranged on the middle part of the column bottom plate (102). The main steel bars (6) are vertically arranged in the four corners of the bottom pouring layer (3), the upper part of the main steel bars (6) extends out of the top of the bottom pouring layer (3), the outer side of the main steel bars (6) is provided with the steel bar mesh (7) which is located in the bottom pouring layer (3) and is vertically and equidistantly distributed with the main steel bars (6), the inner cavity wall of the steel bar mesh (7) is provided with the short column stress steel bars (11) which are located in the bottom pouring layer (3) and vertically upward, the short column stress steel bars (11) are fixedly connected with the stiffening plate (103), the first stirrup assembly (8) is arranged on the lower end of the outer side of the main steel bars (6) and the second stirrup assembly (9) is arranged on the upper end, the middle pouring layer (4) is poured on the top of the bottom pouring layer (3) and is the same height as the column foot iron (2), the top pouring layer (5) is poured on the top of the middle pouring layer (4), and the upper part of the main steel bars (6) is located in the inside of the top pouring layer (5).
2. A plinths for a large flue boiler according to claim 1, characterized in that The short column stress steel bars (11) are arranged in a bent manner, and the short column stress steel bars (11) are welded with the stiffening plate (103).
3. A plinths for a large flue boiler according to claim 1, characterized in that The first stirrup assembly (8) comprises first reinforcing outer steel bars (81) and first reinforcing inner steel bars (82), the first reinforcing outer steel bars (81) are arranged on the outer side of the main steel bars (6), and the first reinforcing inner steel bars (82) are equidistantly arranged between the first reinforcing outer steel bars (81) on the two sides.
4. A plinths for a large flue boiler according to claim 3, characterised in that A plurality of the first reinforcing outer steel bars (81) are vertically arranged on one side of the first vertical steel bars (10).
5. The chimney boiler column according to claim 1, characterized in that The second stirrup assembly (9) comprises second reinforcing outer steel bars (91) and second reinforcing inner steel bars (92), the second reinforcing outer steel bars (91) are arranged on the outer side of the main steel bars (6), and the second reinforcing inner steel bars (92) are equidistantly arranged between the second reinforcing outer steel bars (91) on the two sides.
6. A plinths for a large flue boiler according to claim 5, characterised in that A plurality of the second reinforcing outer steel bars (91) are vertically arranged on one side of the second vertical steel bars (12).
7. The chimney boiler column according to claim 1, characterized in that The material of the middle pouring layer (4) is 50-thick high-strength grouting material.
8. The large flue boiler column according to claim 1, characterized in that The material of the top pouring layer (5) is C40 fine stone micro-expansion concrete.