Water cooling wall
The integral forged plate water-cooled wall addresses stress concentration and expansion issues in boilers by evenly distributing loads and enhancing heat transfer, significantly reducing internal stress and tube temperatures.
Patent Information
- Application Number
- CN202323496639.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-20
AI Technical Summary
Traditional membrane water-cooled walls in boilers suffer from stress concentration and excessive expansion differences due to uneven load transmission through flat steel, leading to potential cracking and bursting of tubes, compromising boiler safety.
A water-cooled wall structure utilizing an integral forged plate with a machined tubular channel and welded pipe joints, replacing the traditional light tube + flat steel structure, ensuring even weight distribution and improved heat transfer.
The new structure significantly reduces internal stress levels by over 80%, enhances heat transfer, and uniformly distributes loads, particularly in high-stress areas, thereby improving boiler safety and efficiency.
Smart Images
Figure CN222278647U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of boilers, in particular to a water-cooled wall. Background Art
[0002] In the field of power generation equipment boilers, the traditional membrane water-cooled wall adopts a light tube + flat steel structure, which is prone to stress concentration caused by uneven transmission of the lateral load of the water-cooled wall through the flat steel and excessive expansion difference caused by uneven expansion of the water-cooled wall. Especially in the high stress area of the water-cooled wall in the transition section with a more complex structure, the water-cooled wall tube introduction and lead-out structure is more complex, which can easily cause the water-cooled wall stress to exceed the limit, resulting in the cracking of the flat steel, and even causing the tube to burst, which seriously threatens the operation safety of the boiler. Utility Model Content
[0003] In order to overcome the deficiencies of the prior art, the utility model provides a water-cooled wall to solve the following problems existing in the prior art: it is very easy to cause the water-cooled wall stress to exceed the limit, resulting in flat steel cracking, and even causing pipe bursting, which seriously threatens the safe operation of the boiler.
[0004] The technical solution adopted by the utility model to solve the above problems is:
[0005] A water-cooled wall comprises a heat-conducting component and a working medium channel arranged on the heat-conducting component.
[0006] As a preferred technical solution, the working fluid channel is a cylindrical channel.
[0007] As a preferred technical solution, the heat conducting member is provided with an inlet pipe and an outlet pipe.
[0008] As a preferred technical solution, the heat conducting member is connected to the inlet pipe and the outlet pipe by welding.
[0009] As a preferred technical solution, the heat conducting element is in the shape of a plate.
[0010] As a preferred technical solution, the working medium channel is arranged on the side of the heat conducting member, and the inlet pipe and the outlet pipe are arranged on the front of the heat conducting member.
[0011] As a preferred technical solution, the cross-sectional shape of the heat conducting element is rectangular.
[0012] As a preferred technical solution, the heat conducting member is a forged member.
[0013] As a preferred technical solution, the heat conducting component is an integrally formed component.
[0014] As a preferred technical solution, the heat conducting member is an integrally formed member made of 12Cr1MoV or SA-182F91.
[0015] Compared with the prior art, the utility model has the following beneficial effects:
[0016] (1) The utility model adopts an integral forged plate to replace the traditional light tube + flat steel structure, which can greatly simplify the structure of the water-cooled wall;
[0017] (2) After the utility model adopts the integral forging plate structure, the weight of the water-cooled wall can be evenly loaded on the forging plate, thereby avoiding the stress concentration problem caused by the uneven transmission of the lateral load of the water-cooled wall through the flat steel and the problem of excessive expansion difference caused by the uneven expansion of the water-cooled wall;
[0018] (3) The heat transfer area between the working fluid and the forging plate of the utility model is larger, the heat transfer effect is better, the load distribution is more uniform, the temperature of the water-cooled wall tube wall is significantly reduced, and the overall internal stress level is greatly reduced. Especially when applied to the high stress area of the water-cooled wall in the transition section with a more complex structure, its heat transfer characteristics are more prominent;
[0019] (4) The utility model proposes a water-cooled wall, in which the working medium channel is formed by the machined tubular channel, replacing the light tube + flat steel structure used in the traditional membrane water-cooled wall; wherein the working medium channel is formed by the machined tubular channel on the integral forged plate, and the pipe joint is machined and welded on the forged plate to form the inlet pipe and the outlet pipe, and finally forms an integral forged plate water-cooled wall, which can be applied to various structural requirements of the water-cooled wall;
[0020] (5) The integral forged plate of the utility model bears the entire weight of the water-cooled wall, the heat conduction area between the working fluid and the forged plate is larger, the heat transfer effect is better, the load distribution is more uniform, the water-cooled wall tube wall temperature is significantly reduced, and the overall internal stress level is greatly reduced. At the same time, the forged plate can be machined and welded to form an inlet pipe and an outlet pipe fixed on the integral forged plate to adapt to the high stress area of various complex connection structures such as the water-cooled wall inlet and outlet;
[0021] (6) Compared with the light tube + flat steel structure adopted in the traditional membrane water-cooled wall, the utility model adopts a new integral forged plate water-cooled wall structure, which simplifies the load-bearing structure and enables the weight of the water-cooled wall to be evenly loaded onto the forged plate. At the same time, the heat conduction area between the working fluid and the forged plate is larger, the heat transfer effect is better, the load distribution is more uniform, the temperature of the water-cooled wall tube wall is significantly reduced, and the overall internal stress level is greatly reduced. In particular, when applied to the high stress area of the water-cooled wall in the transition section with a relatively complex structure, its heat transfer characteristics are more prominent. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a structural schematic diagram of the utility model.
[0023] Markings and their corresponding names in the accompanying drawings: 1. heat conducting part, 2. working fluid channel, 3. inlet pipe, 4. outlet pipe. DETAILED DESCRIPTION
[0024] The present invention will be further described in detail below in conjunction with the embodiments and drawings, but the implementation manner of the present invention is not limited thereto.
[0025] Example 1
[0026] like Figure 1 As shown, in response to the technical problems described in the background technology, the utility model proposes a water-cooled wall. The utility model adopts an integral forged plate to replace the traditional light tube + flat steel structure, which can greatly simplify the structural form of the water-cooled wall.
[0027] After adopting the integral forging plate structure, the weight of the water-cooled wall can be evenly loaded onto the forging plate, avoiding the stress concentration problem caused by the uneven transmission of the lateral load of the water-cooled wall through the flat steel and the excessive expansion difference problem caused by the uneven expansion of the water-cooled wall.
[0028] The new integral forged plate water-cooled wall structure has a larger heat conduction area between the working fluid and the forged plate, better heat transfer effect, more uniform load distribution, significantly reduced water-cooled wall tube temperature, and greatly reduced overall internal stress level. Especially when used in the high stress area of the water-cooled wall in the transition section with a more complex structure, its heat transfer characteristics are more prominent.
[0029] The utility model proposes a water-cooled wall, in which a tubular channel is machined to form a working medium channel, replacing the light pipe + flat steel structure used in the traditional membrane water-cooled wall. The tubular channel machined on the integral forged plate (heat-conducting part 1) forms a working medium channel 2, and the pipe joints are machined and welded on the forged plate to form an inlet pipe 3 and an outlet pipe 4, finally forming an integral forged plate water-cooled wall, which can be applied to various structural requirements of the water-cooled wall. The material of the heat-conducting part 1 can be 12Cr1MoV or SA-182F91.
[0030] The integral forging plate bears the entire weight of the water-cooled wall, the heat conduction area between the working fluid and the forging plate is larger, the heat transfer effect is better, the load distribution is more uniform, the water-cooled wall tube temperature is significantly reduced, and the overall internal stress level is greatly reduced. At the same time, the pipe joints can be machined and welded on the forging plate to form the inlet pipe 3 and the outlet pipe 4 fixed on the integral forging plate to adapt to the high stress area of various complex connection structures such as the water-cooled wall inlet and outlet.
[0031] Compared with the traditional membrane water-cooled wall structure of light tube + flat steel, the new integral forged plate water-cooled wall structure simplifies the bearing structure, so that the weight of the water-cooled wall can be evenly loaded on the forged plate. At the same time, the heat conduction area between the working fluid and the forged plate is larger, the heat transfer effect is better, the load distribution is more uniform, the water-cooled wall tube temperature is significantly reduced, and the overall internal stress level is greatly reduced. Especially when used in the high stress area of the water-cooled wall in the transition section with a more complex structure, its heat transfer characteristics are more prominent.
[0032] Example 2
[0033] like Figure 1 As shown, as a further optimization of Example 1, based on Example 1, this embodiment also includes the following technical features:
[0034] The utility model proposes a water-cooled wall, in which the tubular channel processed by the machine forms the working medium channel, replacing the light tube + flat steel structure used in the traditional membrane water-cooled wall, avoiding the stress concentration problem caused by the uneven transmission of the lateral load of the water-cooled wall through the flat steel and the excessive expansion difference problem caused by the uneven expansion of the water-cooled wall. The working medium channel is formed by the tubular channel processed by the machine on the integral forging plate, and the pipe joint is machined and welded on the forging plate to form the inlet pipe 3 and the outlet pipe 4, and finally forms an integral forged plate water-cooled wall, which can be applied to various structural requirements and heat transfer requirements of the water-cooled wall.
[0035] The integral forging plate bears the entire weight of the water-cooled wall, the heat conduction area between the working fluid and the forging plate is larger, the heat transfer effect is better, the load distribution is more uniform, the water-cooled wall tube temperature is significantly reduced, and the overall internal stress level is greatly reduced. At the same time, the pipe joints can be machined and welded on the forging plate to form the inlet pipe 3 and the outlet pipe 4 fixed on the integral forging plate to adapt to the high stress area of various complex connection structures such as the water-cooled wall inlet and outlet.
[0036] In addition, the size and thickness of the integral forging plate can be adjusted according to the structural and performance requirements, the size and flow area of the tubular channel can also be adjusted according to the heat exchange requirements, and the inlet pipe 3 and the outlet pipe 4 can be arranged according to the structural requirements to be suitable for the high stress area forms of various complex connection structures of the water-cooled wall.
[0037] The new integral forged plate water-cooled wall structure can replace the traditional membrane water-cooled wall's light tube + flat steel structure, avoiding the stress concentration problem caused by the uneven transmission of the water-cooled wall's lateral load through the flat steel and the excessive expansion difference problem caused by the uneven expansion of the water-cooled wall;
[0038] The integral forging plate bears the entire weight of the water-cooled wall, the load distribution is more uniform, and the overall internal stress level is significantly reduced;
[0039] The integral forging plate and the tubular channel have more heat transfer area, better heat transfer effect, and the temperature of the water-cooled wall tube is significantly reduced;
[0040] The tubular channel of the integral forged plate is machined to form a working medium channel, and the inlet pipe 3 and the outlet pipe 4 are formed by machining and welding pipe joints, which can adapt to the high stress area form of various complex connection structures such as the inlet and outlet of the water-cooled wall.
[0041] The internal stress level of the integral forged plate is about 90-114MPa (different structures and positions have different stress values). Compared with the internal stress level of the traditional light tube + flat steel structure of about 507-593MPa, the stress level is reduced by more than 80%, with obvious effect.
[0042] As described above, the utility model can be implemented well.
[0043] The above is only a preferred embodiment of the utility model and does not limit the utility model in any form. According to the technical essence of the utility model, within the spirit and principles of the utility model, any simple modification, equivalent replacement and improvement made to the above embodiment still falls within the protection scope of the technical solution of the utility model.
Claims
1. A water-cooled wall, characterized in that: The invention comprises a heat conducting member (1) and a working medium channel (2) arranged on the heat conducting member (1); an inlet pipe (3) and an outlet pipe (4) are arranged on the heat conducting member (1); the heat conducting member (1) is connected to the inlet pipe (3) and the outlet pipe (4) by welding; the heat conducting member (1) is in the shape of a plate; the working medium channel (2) is arranged on the side of the heat conducting member (1); the inlet pipe (3) and the outlet pipe (4) are arranged on the front of the heat conducting member (1); and the heat conducting member (1) is a forged member.
2. A water-cooled wall according to claim 1, characterized in that: The working medium channel (2) is a cylindrical channel.
3. A water-cooled wall according to claim 1 or 2, characterized in that: The cross-sectional shape of the heat conducting element (1) is rectangular.
4. A water-cooled wall according to claim 1 or 2, characterized in that: The heat conducting member (1) is an integrally formed member.
5. A water-cooled wall according to claim 4, characterized in that: The heat conducting member (1) is an integrally formed member made of 12Cr1MoV or SA-182F91.