Novel water-cooled wall internal heating surface structure
By pre-assembling the water-cooled wall heating surface tube assemblies in the factory and connecting them with U-shaped tubes and fixing hook assemblies, the high cost and complex installation problems caused by the many openings in the water-cooled wall are solved, achieving cost savings and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HARBIN HAGUO BOILER ENG TECH
- Filing Date
- 2025-06-27
- Publication Date
- 2026-05-19
AI Technical Summary
Existing boiler water-cooled walls have a large number of openings and complex sealing structures, resulting in high material costs, difficult installation, and increased manufacturing and installation complexity.
A novel internal heating surface structure for water-cooled walls is designed, in which the heating surface tube assemblies are pre-assembled in the factory and connected using U-shaped tubes and fixing hook assemblies. This reduces the number of openings in the water-cooled walls and controls fluid flow through throttling orifice plates, simplifying the installation process.
It reduces material and transportation costs, simplifies the installation process, improves safety and flexibility, and adapts to adjustments of the heating surface under different loads.
Smart Images
Figure CN224261759U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of boiler technology, specifically to a novel internal heating surface structure of a water-cooled wall. Background Technology
[0002] In traditional boiler designs, to increase the heating surface area within the furnace, numerous holes typically need to be drilled in the water-cooled walls, requiring a large number of bends in the tubes to accommodate these holes. Furthermore, corresponding sealing devices must be designed and installed for these openings. These steps not only increase the complexity of manufacturing and installation but also lead to high costs. The original boiler water-cooled walls generally fall into two categories. The first type of original boiler water-cooled wall has more tubes and a more complex design; see [link to relevant documentation]. Figures 6-8 As shown. The second type of original boiler water-cooled screen has fewer tubes, but requires less additional heating surface area; see [link to relevant documentation]. Figure 9 and Figure 10 . Utility Model Content
[0003] The purpose of this invention is to solve the problems of existing boiler water-cooled walls having a large number of openings, sealing issues, and excessive water-cooled wall tubes, resulting in high material and manufacturing costs and difficult installation. Therefore, this invention provides a new type of internal heating surface structure for water-cooled walls.
[0004] The technical solution of this utility model is:
[0005] A novel internal heating surface structure for a water-cooled wall includes N heating surface tube groups 100, where N ≥ 1 and N is a positive integer. Each heating surface tube group 100 includes multiple heating surface tube panels 101, which are arranged vertically side-by-side between two water-cooled walls 200 from front to back. The inlet and outlet of each heating surface tube panel 101 are located close to the right water-cooled wall 200, and the inlet and outlet of each heating surface tube panel 101 are connected to the corresponding main tube 201 in the right water-cooled wall 200. The other end of each heating surface tube panel 101 is detachably connected to the corresponding heat exchange tube in the left water-cooled wall 200.
[0006] Furthermore, each heated surface tube panel 101 includes multiple U-shaped tubes 102, the size of which increases sequentially from the inside to the outside, and both ends of each U-shaped tube 102 are connected to the corresponding main tube 201 in the right water-cooled wall 200.
[0007] Furthermore, each heated surface tube panel 101 also includes multiple tube panel fixing blocks 103, and adjacent U-shaped tubes 102 in the heated surface tube panel 101 are connected by multiple tube panel fixing blocks 103.
[0008] Furthermore, the heated surface structure also includes multiple fixing hook assemblies 300, and each heated surface tube panel 101 is detachably connected to the left water-cooled wall 200 by no less than two fixing hook assemblies 300.
[0009] Furthermore, each fixing hook assembly 300 includes a hook 301 and a fixing sleeve 302. The hook 301 is a U-shaped plate structure, which is vertically fixed to the outer wall of the heat exchange tube of the left water-cooled wall 200. The fixing sleeve 302 is vertically sleeved on one end of the hook 301 and is fixed to the outermost U-shaped tube 102 side wall of the heated surface tube screen 101.
[0010] Furthermore, when there are multiple heated surface tube assemblies 100, the multiple heated surface tube assemblies 100 are arranged sequentially from top to bottom between the left and right water-cooled walls.
[0011] Furthermore, the heating surface structure also includes multiple throttling orifice plates 400. Multiple throttling orifice plates 400 are coaxially arranged on the right water-cooled wall 200, and a throttling orifice plate 400 is provided below the inlet and outlet of each heating surface tube group 100.
[0012] Furthermore, the orifice plate 400 is a circular plate structure, and the orifice plate 400 has a throttling hole in the center that runs through the upper and lower end faces of the orifice plate. The diameter of the throttling hole is smaller than the inner diameter of the main pipe 201 in the water-cooled wall 200.
[0013] Compared with the prior art, the present invention has the following advantages:
[0014] 1. This utility model can save installation costs. Since the heating surface is assembled in the factory, the amount of on-site installation work can be greatly reduced, thereby shortening the construction period and reducing labor costs.
[0015] 2. This utility model can save transportation costs. After the tube screen is assembled, its packaging becomes extremely simple and convenient. The use of laminated timber greatly saves transportation costs.
[0016] 3. This utility model can reduce costs while improving safety, because it does not require additional openings on the water-cooled wall, and therefore does not require auxiliary structures such as sealing boxes, thereby improving overall safety.
[0017] 4. The novel internal heating surface structure of the water-cooled wall of this utility model has the characteristics of cost saving and safety and reliability, and therefore has broad application prospects. Attached Figure Description
[0018] Figure 1 This is a front view of the internal heating surface structure of a novel water-cooled wall according to this utility model; Figure 2This is a side view of the internal heating surface structure of a novel water-cooled wall according to this utility model; Figure 3 This is a top view of the internal heating surface structure of a novel water-cooled wall as described in this utility model; Figure 4 This is an enlarged view of the fixing hook assembly in the internal heating surface structure of a novel water-cooled wall according to this utility model; Figure 5 This is a schematic diagram of the throttling orifice plate in the internal heating surface structure of a novel water-cooled wall as described in this utility model; Figure 6 This is a schematic diagram of the structure of an existing boiler water-cooled screen; Figure 7 This is a schematic diagram of the existing first type of boiler water-cooled screen structure. This type of boiler water-cooled screen has many tubes and a complex structure. Figure 8 yes Figure 7 View from direction A; Figure 9 This is a schematic diagram of the existing second type of boiler water-cooled screen structure. This type of boiler water-cooled screen has fewer tubes, but the number of heating surfaces is reduced. Figure 10 yes Figure 9 A schematic diagram of the structure after removing the heated surface.
[0019] In the figure: 100, heated surface tube assembly; 101, heated surface tube panel; 102, U-shaped tube; 103, tube panel fixing block; 200, water-cooled wall; 300, fixing hook assembly; 301, hook; 302, fixing sleeve; 400, throttling orifice plate. Detailed Implementation
[0020] Specific implementation method one: Combining Figures 1 to 5 This embodiment describes a novel internal heating surface structure for a water-cooled wall. The heating surface structure includes N heating surface tube groups 100, where N ≥ 1 and N is a positive integer. Each heating surface tube group 100 includes multiple heating surface tube panels 101, which are arranged vertically side-by-side between two water-cooled walls 200 from front to back. The inlet and outlet of each heating surface tube panel 101 are located close to the right water-cooled wall 200, and the inlet and outlet of each heating surface tube panel 101 are connected to the corresponding main tube 201 in the right water-cooled wall 200. The other end of each heating surface tube panel 101 is detachably connected to the corresponding heat exchange tube in the left water-cooled wall 200.
[0021] The novel internal heating surface structure of the water-cooled wall eliminates the need for additional openings in the water-cooled wall, thereby increasing the heating area while significantly reducing manufacturing and installation workload. The newly added heating surface tubes and water-cooled wall tubes can be designed as an integrated unit and pre-assembled in the factory, significantly reducing on-site construction work.
[0022] This invention innovatively adjusts the structure of the internal heating surface of the traditional water-cooled wall. By eliminating the openings on the water-cooled wall and removing unnecessary seals and water-cooled wall tubes, it can not only significantly reduce material and manufacturing costs, but also effectively reduce installation difficulty.
[0023] Specific Implementation Method Two: Combining Figures 1 to 5 This embodiment describes a heating surface tube panel 101 that includes multiple U-shaped tubes 102. The dimensions of the multiple U-shaped tubes 102 increase sequentially from the inside to the outside. Both ends of each U-shaped tube 102 are connected to the corresponding main tube 201 in the right-side water-cooled wall 200. Other components and connections are the same as in specific embodiment one.
[0024] Specific implementation method three: Combining Figures 1 to 5 In this embodiment, each heated surface tube panel 101 further includes multiple tube panel fixing blocks 103, and adjacent U-shaped tubes 102 in the heated surface tube panel 101 are connected by the multiple tube panel fixing blocks 103. This arrangement, by fixing the U-shaped tubes 102 in the heated surface tube panel 101 with the tube panel fixing blocks 103, effectively prevents deformation of the heated surface tube panel 101. Other components and connections are the same as in specific embodiments one or two.
[0025] Specific implementation method four: Combination Figures 1 to 5 This embodiment further includes multiple fixing hook assemblies 300, with each heating surface tube panel 101 detachably connected to the left water-cooled wall 200 via at least two fixing hook assemblies 300. This hook structure facilitates assembly by connecting the heating surface tube panel 101 to the left water-cooled wall 200. Other components and connections are the same as in specific embodiments one, two, or three.
[0026] Specific Implementation Method Five: Combining Figures 1 to 5 This embodiment describes a fixed hook assembly 300, each comprising a hook 301 and a fixing sleeve 302. The hook 301 is a U-shaped plate structure, vertically fixed to the outer wall of the heat exchange tube on the left water-cooled wall 200. The fixing sleeve 302 is vertically fitted onto one end of the hook 301 and fixed to the side wall of the outermost U-shaped tube 102 of the heat-receiving surface tube panel 101. This arrangement, with a hook on the other side of the water-cooled wall, ensures the overall operational stability. Other components and connections are the same as in specific embodiments one, two, three, or four.
[0027] Specific Implementation Method Six: Combination Figures 1 to 5In this embodiment, when there are multiple heating surface tube assemblies 100, they are arranged sequentially from top to bottom between the left and right water-cooled walls. This arrangement provides greater flexibility for the heating surface compared to traditional methods. Combined with the boiler's "deep peak shaving" technology, it can flexibly adjust the number of heating surfaces under different loads with less modification work. Other components and connections are the same as in specific embodiments one, two, three, four, or five.
[0028] Specific implementation method seven: Combining Figures 1 to 5 This embodiment further includes multiple throttling orifice plates 400. Multiple throttling orifice plates 400 are coaxially arranged on the right-side water-cooled wall 200. Each heating surface tube assembly 100 has one throttling orifice plate 400 below its inlet and outlet. Other components and connections are the same as in specific embodiments one, two, three, four, five, or six.
[0029] Specific implementation method eight: Combination Figures 1 to 5 In this embodiment, the orifice plate 400 is a circular plate structure. The orifice plate 400 has a throttling hole at its center, penetrating the upper and lower end faces of the orifice plate. The diameter of the throttling hole is smaller than the inner diameter of the main pipe 201 in the water-cooled wall 200. This configuration, by adding an orifice plate to the main pipe and accurately calculating the orifice plate's opening size, effectively prevents the fluid from "short-circuiting," ensuring the system's efficient operation. Other components and connections are the same as in specific embodiments one, two, three, four, five, six, or seven.
[0030] Working principle
[0031] Combination Figures 1 to 5 The working principle of the novel water-cooled wall internal heating surface structure described in this utility model is explained as follows:
[0032] First, multiple sets of heated surface tube assemblies 100 are arranged sequentially from top to bottom between the left and right water-cooled walls 200. There is a gap between adjacent sets of heated surface tube assemblies 100. Multiple heated surface tube panels 101 within each set of heated surface tube assemblies 100 are arranged vertically side-by-side from front to back. Multiple U-shaped tubes 102 within each heated surface tube panel 101 are fixedly connected by tube panel fixing blocks 103. The two ends of each U-shaped tube 102 are connected to the corresponding main pipe in the right water-cooled wall 200. The left end of the outermost U-shaped tube 102 in each heated surface tube panel 101 is detachably connected to the corresponding main pipe in the left water-cooled wall 200 via two sets of vertically arranged fixing hook assemblies 300. A coaxially arranged throttling orifice plate 400 is provided on the corresponding main pipe in the right water-cooled wall 200 below each heated surface tube panel 101. By adding throttling orifice plates to the main pipes and accurately calculating the orifice plate opening size, the "short-circuit phenomenon" of the fluid is effectively prevented, ensuring the efficient operation of the system.
[0033] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A novel water wall internal heating surface structure, characterized by: The heating surface structure includes N heating surface tube groups (100), where N≥1 and N is a positive integer. Each heating surface tube group (100) includes multiple heating surface tube screens (101). The multiple heating surface tube screens (101) are arranged vertically side by side from front to back between the two water-cooled walls (200). The inlet and outlet of each heating surface tube screen (101) are located close to the right water-cooled wall (200). The inlet and outlet of each heating surface tube screen (101) are connected to the corresponding main tube (201) in the right water-cooled wall (200). The other end of each heating surface tube screen (101) is detachably connected to the corresponding heat exchange tube in the left water-cooled wall (200).
2. A novel internal heating surface structure of water cooled wall as claimed in claim 1, wherein: Each heated surface tube panel (101) includes multiple U-shaped tubes (102), the size of which increases sequentially from the inside to the outside. Both ends of each U-shaped tube (102) are connected to the corresponding main tube (201) in the right water-cooled wall (200).
3. A novel internal heating surface structure of water cooled wall as claimed in claim 2, wherein: Each heated surface tube panel (101) also includes multiple tube panel fixing blocks (103), and two adjacent U-shaped tubes (102) in the heated surface tube panel (101) are connected by multiple tube panel fixing blocks (103).
4. A novel internal heating surface structure of water cooled wall according to claim 1 or 3, characterized in that: The heated surface structure also includes multiple fixing hook assemblies (300), and each heated surface tube panel (101) is detachably connected to the left water-cooled wall (200) by no less than two fixing hook assemblies (300).
5. A novel internal heating surface structure of water wall according to claim 4, characterized in that: Each fixing hook assembly (300) includes a hook (301) and a fixing sleeve (302). The hook (301) is a U-shaped plate structure, which is vertically fixed on the outer wall of the heat exchange tube of the left water-cooled wall (200). The fixing sleeve (302) is vertically sleeved on one end of the hook (301) and fixed on the outermost U-shaped tube (102) side wall of the heated surface tube screen (101).
6. A novel internal heating surface structure of water cooled wall as claimed in claim 1 or 5, wherein: When there are multiple heated surface tube assemblies (100), the multiple heated surface tube assemblies (100) are arranged from top to bottom between the left and right water-cooled walls.
7. A novel internal heating surface structure of water wall according to claim 6, characterized in that: The heating surface structure also includes multiple throttling orifice plates (400). Multiple throttling orifice plates (400) are coaxially arranged on the right water-cooled wall (200). Each heating surface tube group (100) has a throttling orifice plate (400) below its inlet and outlet.
8. A novel internal heating surface structure of water wall according to claim 7, characterized in that: The orifice plate (400) is a circular plate structure. The orifice plate (400) has a throttling hole in the center that runs through the upper and lower end faces of the orifice plate. The diameter of the throttling hole is smaller than the inner diameter of the main pipe (201) in the water-cooled wall (200).