Multi-purpose converter transformer valve hall firewall

Abstract

The invention discloses a multipurpose converter transformer valve hall firewall structure, which comprises a flat plate wall body, a deformation joint and a fire fighting equipment platform, and is characterized in that the flat plate wall body comprises a transverse wall body for replacing a valve hall outer wall and a longitudinal wall body for separating a plurality of converter transformers; the deformation joint is arranged at the junction of the transverse wall body and the longitudinal wall body and is arranged to be in a T shape. The deformation joint is filled with a refractory material; the fire-fighting equipment platform is arranged at the top end of the counter-fire side of the transverse wall body; the fire-fighting equipment platform is provided with a fire-fighting nozzle, and a pipeline is arranged in the fire-fighting equipment platform. Compared with the prior art, the T-shaped deformation joint is arranged on the back-to-fire surface of the joint of the longitudinal wall body and the transverse wall body of the firewall, and the deformation joint is filled with the refractory material, so that on one hand, the wall body has certain expansion and contraction capacity to weaken temperature stress; on the other hand, the wall surface is divided, and the problems that the wall surface cracks and the durability of the wall is affected due to the fact that the cast-in-place firewall is too long, and internal stress of the wall is generated when concrete is solidified, heated and cooled are solved.

Description

Technical Field

[0001] This application relates to converter transformer valve halls, and more particularly to a firewall for converter transformer valve halls. Background Technology

[0002] The converter transformer is an oil-filled electrical device located on the side of the valve hall building. In the event of equipment failure, the internal cooling oil is prone to fire. To prevent fires from the electrical equipment from affecting the safety of the valve hall building, a firewall is constructed on the side of the valve hall building adjacent to the converter transformer equipment, known as the converter station valve hall firewall. This firewall is a non-combustible wall, typically made of cast-in-place reinforced concrete, placed between the valve hall building and the converter transformer equipment. Its main function is to prevent flames from affecting the safety of the valve hall building in the event of a fire involving the converter transformer equipment.

[0003] However, the following problems may occur in actual construction projects: (1) Since the length of the firewall should not be less than the length of the converter transformer, if the cast-in-place firewall is too long, stress will be generated in the wall during the concrete solidification and temperature rise and fall, causing cracks on the wall surface and affecting the durability of the wall.

[0004] (2) In addition to fulfilling the fire protection function, the wall should also provide space for the installation of fire-fighting equipment pipelines and fire nozzles. The fire wall configuration should ensure that the flames do not directly affect the fire-fighting pipelines in the event of a fire; at the same time, it should also provide personnel inspection passages for routine maintenance of fire-fighting equipment; simple walls cannot meet these functional requirements.

[0005] In existing technologies, solutions to address the issue of excessively long firewalls without compromising fire resistance typically involve installing post-cast strips or using micro-expansion concrete to offset shrinkage deformation during concrete setting. Additionally, increasing the wall reinforcement helps resist temperature stress.

[0006] In engineering, converter transformers are oil-filled electrical equipment, which is prone to electrical fires when they malfunction. Normally, fire protection systems are located around the equipment; however, in the event of a deflagration, these systems can be damaged by the impact of the flames. Therefore, in addition to the fire protection system around the equipment, longer-range fire protection equipment should also be installed at a distance from the equipment.

[0007] However, setting post-cast strips in the wall will prolong the construction period, and due to differences in the materials of the post-cast concrete, color differences will occur on the wall surface, affecting the aesthetic effect. Moreover, setting post-cast strips and using micro-expansion concrete to offset the shrinkage deformation caused by the concrete curing process cannot reduce the temperature stress generated by excessively long walls under temperature differences.

[0008] Similarly, this method involves remote ground-based or tower-based installations with pipelines buried underground. This results in a large footprint, and the underground pipelines are difficult to maintain, impacting site layout and equipment transportation.

[0009] Therefore, there is an urgent need for a firewall architecture that meets functional requirements and addresses the shortcomings of existing firewalls. Summary of the Invention

[0010] The purpose of this application is to provide a firewall architecture that meets functional requirements and addresses the shortcomings of existing firewalls.

[0011] Specifically, this application discloses a firewall structure for a converter valve hall with multiple applications. The firewall includes: a flat wall, an expansion joint, and a fire-fighting equipment platform, wherein: The flat wall includes a transverse wall that replaces the outer wall of the valve hall and a longitudinal wall that separates multiple converter transformers. The transverse wall and the longitudinal wall are further divided into a fire-facing side and a fire-repellent side according to the fire scenario. The expansion joint is located at the junction of the transverse wall and the longitudinal wall, and is configured in a "T" shape; the expansion joint is filled with fire-resistant material. The fire-fighting equipment platform is located at the top of the fire-facing side of the transverse wall; the fire-fighting equipment platform is equipped with fire nozzles and internal pipes.

[0012] In a preferred embodiment, a trapezoidal reinforced area is further provided at the junction of the transverse wall and the longitudinal wall.

[0013] In a preferred embodiment, the refractory material is filled within the reinforcing zone, and the refractory material includes: aluminum silicate wool board.

[0014] In a preferred embodiment, the transverse wall is also provided with an opening through which equipment passes.

[0015] In a preferred embodiment, the number of openings is the same as the number of converter transformers.

[0016] In a preferred embodiment, the length of the longitudinal wall is not less than the length of the converter transformer arrangement.

[0017] In a preferred embodiment, a railing is provided on the air-facing side of the fire-fighting equipment platform.

[0018] In a preferred embodiment, the height of the transverse wall is the same as the height of the other walls of the valve hall, and the height of the longitudinal wall is not lower than that of the converter transformer.

[0019] In a preferred embodiment, the longitudinal wall has a higher thickness at its junction with the transverse wall and gradually returns to the designed thickness of the longitudinal wall as it moves away from the junction.

[0020] In a preferred embodiment, the fire nozzles are positioned at the eaves of the fire equipment platform.

[0021] In a preferred embodiment, the flat wall is a reinforced concrete structure.

[0022] The main advantages of this application are: (1) The present invention sets a “T”-shaped expansion joint on the unexposed surface at the intersection of the longitudinal and transverse walls of the firewall and fills the expansion joint with refractory material. This enables the wall to have a certain expansion and contraction capacity to reduce temperature stress. On the other hand, it achieves the division of the wall surface and prevents the cast-in-place firewall from being too long. This prevents the stress in the wall from being generated during the solidification and temperature rise and fall of the concrete, which would cause cracks on the wall surface and affect the durability of the wall.

[0023] (2) This invention sets up a fire-fighting equipment platform near the top of the firewall, with fire sprinklers installed at the eaves of the platform and pipes arranged inside. This avoids damage to the fire protection system from the impact of explosive combustion of oil-containing electrical equipment, while expanding the coverage of the fire sprinklers, enhancing the fire protection effect, and solving the problem of land occupation. Moreover, this invention also installs railings on the air-facing side of the fire-fighting equipment platform to ensure the safety requirements of daily maintenance of the fire protection system.

[0024] The specification of this application contains numerous technical features distributed across various technical solutions. Listing all possible combinations of these technical features (i.e., technical solutions) would make the specification excessively lengthy. To avoid this problem, the various technical features disclosed in the above-described invention, the various technical features disclosed in the following embodiments and examples, and the various technical features disclosed in the accompanying drawings can be freely combined to form various new technical solutions (all of which should be considered as described in this specification), unless such a combination of technical features is technically infeasible. For example, one example discloses feature A+B+C, and another example discloses feature A+B+D+E. Features C and D are equivalent technical means that serve the same function, and technically only one needs to be used; they cannot be used simultaneously. Feature E can technically be combined with feature C. Therefore, the solution A+B+C+D should not be considered as described because it is technically infeasible, while the solution A+B+C+E should be considered as described. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of the junction of the longitudinal and transverse walls of the firewall in an embodiment of the present invention; Figure 2 This is a schematic diagram of the firewall's frontal side in an embodiment of the present invention; Figure 3 This is a structural layout diagram of the valve hall in an embodiment of the present invention.

[0026] Attached diagram labels: 1-Transverse wall; 2-Longitudinal wall; 3-Expansion joint; 4-Reinforced zone; 5-Fire equipment platform; 6-Valve hall; 7-Converter transformer; 8-Refractory material; 9-Opening. Detailed Implementation

[0027] Through meticulous and in-depth research, the inventors have developed for the first time a multi-purpose fire wall structure for converter valve halls. Compared with existing technologies, this invention, by setting "T"-shaped expansion joints on the unexposed side of the fire wall at the intersection of the longitudinal and transverse walls and filling these joints with refractory materials, provides the wall with a certain capacity for expansion and contraction, thus reducing temperature stress. Furthermore, it effectively divides the wall surface, preventing excessively long cast-in-place fire walls from developing internal stress during concrete setting and temperature fluctuations, which could lead to surface cracks and compromise wall durability. Simultaneously, this invention incorporates a fire equipment platform near the top of the fire wall, with fire sprinklers installed at the platform's eaves and pipes arranged above it. This avoids damage to the fire protection system from the impact of explosive combustion of oil-containing electrical equipment, while simultaneously expanding the coverage area of ​​the fire sprinklers, enhancing fire protection effectiveness, and resolving land occupation issues.

[0028] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the invention, but do not limit the invention in any way. It should be understood that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention. These modifications and improvements all fall within the scope of protection of the present invention.

[0029] Example Specifically, one embodiment of the present invention is as follows: Figure 1-3 As shown, where, Figure 1 This is a schematic diagram of the expansion joint structure of the firewall described in this invention. Figure 2 This is a schematic diagram showing the installation location of the fire-fighting equipment platform. Figure 3 This is a schematic diagram of the overall structure of the firewall. Specifically, this embodiment includes: a flat wall, expansion joints, and a fire-fighting equipment platform, wherein: The flat wall includes a transverse wall 1 that replaces the outer wall of the valve hall and a longitudinal wall 2 that separates multiple converter transformers. The transverse wall and the longitudinal wall are further divided into a fire-facing side and a fire-repellent side according to the fire scenario. The expansion joint 3 is located at the junction of the transverse wall and the longitudinal wall, and is configured in a "T" shape; the expansion joint 3 is filled with fire-resistant material. The fire-fighting equipment platform 5 is located at the top of the fire-facing side of the transverse wall 1; the fire-fighting equipment platform 5 is equipped with fire nozzles, specifically, the fire nozzles are located at the eaves of the fire-fighting equipment platform 5, and pipes are arranged inside. Optionally, in one embodiment, a railing is provided on the open side of the fire-fighting equipment platform 5.

[0030] In this embodiment, the specific configuration of the expansion joint 3 is as follows: Figure 1 As shown, at the junction of the transverse wall 1 and the longitudinal wall 2, in addition to the expansion joint 3, a reinforced area 4 is also provided, and the filling range of the refractory material 8 does not exceed the reinforced area 4. In this embodiment, the refractory material 8 is aluminum silicate wool board. Furthermore, the longitudinal wall 2 at the junction of the transverse wall 1 and the longitudinal wall 2 is configured with a higher thickness and height to ensure connection strength (see...). Figure 1 and Figure 2 ), and gradually restores to the design thickness of the longitudinal wall as it moves away from the joint. In this embodiment, as Figure 2 The transverse wall 1 is also provided with equipment passage openings 9, and the number of openings 9 is the same as the number of converter transformers.

[0031] In this embodiment, the length of the longitudinal wall 2 is not less than the length of the converter transformer arrangement, thus ensuring coverage of all converter transformers. The height of the transverse wall 1 is the same as the height of the other walls in the valve hall and is much higher than the longitudinal wall 2 (e.g., Figure 2 (As shown) This ensures that the height of the fire-fighting equipment platform 5 meets the requirements and will not be affected during a fire. The height of the longitudinal wall 2 must be no less than that of the converter transformer.

[0032] Furthermore, it should be noted that in this patent application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. In this patent application, if it refers to performing an action according to a certain element, it means performing the action at least according to that element, including two cases: performing the action only according to that element, and performing the action according to that element and other elements. Expressions such as "multiple," "repeatedly," and "various" include two, two times, two kinds, and more than two, more than two times, and more than two kinds.

Claims

1. A fireproof structure for a converter transformer valve hall with multiple applications, characterized in that, The firewall includes: a flat wall, expansion joints, and a fire equipment platform, wherein: The flat wall includes a transverse wall that replaces the outer wall of the valve hall and a longitudinal wall that separates multiple converter transformers. The transverse wall and the longitudinal wall are further divided into a fire-facing side and a fire-repellent side according to the fire scenario. The expansion joint is located on the unexposed side at the junction of the transverse wall and the longitudinal wall, and is configured in a "T" shape; the expansion joint is filled with refractory material. The fire-fighting equipment platform is located at the top of the fire-facing side of the transverse wall; the fire-fighting equipment platform is equipped with fire nozzles and internal pipes.

2. The firewall structure according to claim 1, characterized in that, A trapezoidal reinforced area is also provided at the junction of the transverse wall and the longitudinal wall.

3. The firewall structure according to claim 2, characterized in that, The refractory material is filled within the reinforcing zone, and the refractory material includes: aluminum silicate wool board.

4. The firewall structure according to claim 1, characterized in that, The transverse wall is also equipped with equipment sleeves that pass through the opening.

5. The firewall structure according to claim 4, characterized in that, The number of openings is the same as the number of converter transformers.

6. The firewall structure according to claim 1, characterized in that, The fire-fighting equipment platform is equipped with railings on the air-facing side.

7. The firewall structure according to claim 1, characterized in that, The longitudinal wall has a higher thickness at the junction with the transverse wall and gradually returns to the designed thickness of the longitudinal wall as it moves away from the junction.

8. The firewall structure according to claim 1, characterized in that, The fire nozzles are located at the eaves of the fire equipment platform.

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