Thermal power plant main power house arrangement device

Abstract

The thermal power plant main power house arrangement device comprises steam turbine generator base columns and steam turbine large platform columns (the steam turbine large platform columns related to the peripheries of the steam turbine base columns), and fair-faced formworks, wood battens and reinforcing channel steel are arranged between the steam turbine generator base columns and the steam turbine large platform columns. The fair-faced formworks, the wood battens and the reinforcing channel steel are arranged to form the minimum net space distance between the steam turbine generator base column and the steam turbine large platform column so that synchronous pouring of the steam turbine generator base column and the steam turbine large platform column can be achieved. According to the arrangement device for the main power house of the thermal power plant, enough clear spacing is reserved during preliminary design of steam turbine generator base columns and steam turbine large platform columns, so that synchronous concrete pouring of the steam turbine generator base columns and the steam turbine large platform columns is achieved, safety risks are reduced, construction cost is reduced, the construction period is shortened, and preconditions are created for early production, power generation and income creation of a project; and multi-party mutual benefit and win-win are realized.

Description

Technical Field

[0001] The invention relates to the technical field of main plant building layout of a thermal power plant, in particular to a main plant building layout device of a thermal power plant. Background Art

[0002] In the prior art, the steam turbine generator base columns and the steam turbine platform columns are designed without sufficient clear spacing (the steam turbine platform columns related to the periphery of the steam turbine base columns), resulting in the project construction only being to construct the steam turbine base first and then the steam turbine platform, which reduces labor productivity and increases construction costs. The construction in the prior art has the following disadvantages: 1. The traditional method is to first complete the pouring of the steam turbine foundation. After the 2X350MW unit project is poured from the 0-meter formwork to the 13.6-meter operating layer, the formwork can be removed only after the concrete strength reaches the specification requirements. After the formwork is removed, the steam turbine platform is cast, and then the formwork is cast from the 0-meter formwork to the 13.6-meter operating layer. Repeated formwork in related areas causes repeated scaffolding, which is time-consuming and labor-intensive, and repetitive labor. The safety risk is significantly increased, the construction cost is increased, and the construction period is wasted and extended.

[0003] For the 2X660MW unit project and the 2X1000MW unit project, due to the large amount of work and the higher elevation of the operating layer, there is also repeated formwork in the related areas, resulting in repeated scaffolding erection, which is time-consuming and labor-intensive, and involves repeated work. The safety risks are significantly increased, the construction costs are increased, and the construction period is wasted and extended.

[0004] 2. Safety disadvantages: Scaffolding erection and formwork support are all high-altitude operations, which increase safety hazards and risks.

[0005] 3. Cost disadvantages: labor, pipe racks, machinery, etc. are on site for a long time and cannot be removed in time, increasing project costs.

[0006] 4. Shortcomings in construction period: Due to repeated formwork, pouring and maintenance in related areas, the construction period cannot be shortened, which affects the early commissioning of the solar power plant and has an impact on the company's benefits.

[0007] In order to solve the above technical problems, it is urgent to provide a main building layout device for a thermal power plant. Summary of the invention

[0008] In order to solve the above technical problems, the technical solution provided by the present invention is: a main building layout device of a thermal power plant, including a steam turbine generator base column and a steam turbine platform column (the steam turbine platform column related to the periphery of the steam turbine base column), and a clear water formwork, a wooden block and a reinforced channel steel are arranged between the steam turbine generator base column and the steam turbine platform column. The clear water formwork, the wooden block and the reinforced channel steel are arranged to form a minimum clear space spacing between the steam turbine generator base column and the steam turbine platform column to meet the synchronous casting of the steam turbine generator base column and the steam turbine platform column.

[0009] Furthermore, the casting thickness of the fair-faced formwork is 18 mm, the casting thickness of the wooden block is 50 mm, and the casting width of the reinforced channel steel is 220 mm.

[0010] Furthermore, the casting thickness of the fair-faced formwork is 18 mm, the casting thickness of the wooden block is 50 mm, the casting width of the reinforcing channel steel is 100 mm, and the reinforcing channel steel and the reinforcing channel steel of the steam turbine generator base column are staggered.

[0011] Furthermore, the minimum clear space spacing is greater than or equal to 370 mm to meet the requirements of synchronous casting of the steam turbine generator base column and the steam turbine platform column.

[0012] The advantages of the invention compared with the prior art are: 1. The main plant layout device of the thermal power plant of the present invention leaves enough clear spacing dimensions in the preliminary design of the steam turbine generator base column and the steam turbine platform column to achieve simultaneous concrete pouring of the two, reduce safety risks, reduce construction costs, shorten construction period, create prerequisites for the project to be put into production and generate electricity and generate income as soon as possible, and achieve mutual benefit and win-win results for all parties. The main plant layout device of the thermal power plant covers the main plant layout device of the new energy solar thermal project and the main plant layout device of the new energy compressed air energy storage project (collectively referred to as the main plant layout device of the thermal power plant).

[0013] 2. The present invention can realize the simultaneous pouring of concrete for both the steam turbine generator base column and the steam turbine platform column, which can shorten the construction period of the investor by 50-60 days, greatly save costs and improve construction progress.

[0014] 3. The present invention is conducive to the improvement of design technology and the advancement of the times, and is conducive to the improvement of new quality productivity in engineering construction.

[0015] 4. The present invention is conducive to the improvement and enhancement of construction technology and to the improvement of the scientific management level of project construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the main plant building layout device of a thermal power plant according to the present invention.

[0017] Among them, 1. Steam turbine generator base column, 2. Steam turbine platform column. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0019] The present invention is described in detail with reference to the accompanying drawings.

[0020] The present invention provides a main building layout device for a thermal power plant during specific implementation, including a steam turbine generator base column 1 and a steam turbine platform column 2, wherein a clear water formwork, a wood block and a reinforced channel steel are arranged between the steam turbine generator base column 1 and the steam turbine platform column 2, and the clear water formwork, the wood block and the reinforced channel steel are arranged to form a minimum clear space spacing between the steam turbine generator base column 1 and the steam turbine platform column 2 to meet the requirement of synchronous casting of the steam turbine generator base column 1 and the steam turbine platform column 2. Example

[0021] Sufficient clear spacing is reserved for the steam turbine generator base column and the steam turbine platform column during the preliminary design of the present invention, because a plain water formwork, a wooden block and a reinforcing channel steel are arranged between the steam turbine generator base column 1 and the steam turbine platform column 2, the casting thickness of the plain water formwork is 18 mm, the casting thickness of the wooden block is 50 mm, and the casting width of the reinforcing channel steel is 220 mm.

[0022] Steam turbine large platform column 2: the casting thickness of the plain formwork is 18 mm, the casting thickness of the wooden block is 50 mm, the casting width of the reinforcement channel steel is 100 mm, and the reinforcement channel steel and the reinforcement channel steel of the steam turbine generator base column 1 are staggered.

[0023] Minimum clear space spacing = 18 (clear formwork) + 50 (wooden blocks) + 220 (reinforced channel steel) + 18 (clear formwork) + 50 (wooden blocks) = 356mm.

[0024] Therefore, the minimum clear space spacing is greater than or equal to 370 mm to meet the requirements of synchronous casting of the steam turbine generator base column 1 and the steam turbine platform column 2.

[0025] The present invention adopts the above-mentioned embodiments to shorten the construction period, save costs and reduce safety risks: 1. Due to the realization of synchronous pouring, the water cut-off work of the main factory roof can be advanced by 35-40 days, and the corresponding labor, tower crane rental, and pipe rack rental can be withdrawn in advance, saving construction costs. After the synchronous construction of the platform, the height difference is small, which reduces the construction safety risk and is conducive to safe and civilized construction on site.

[0026] 2. Since the realization of synchronous pouring was solved from the source of design, the height difference between the steam turbine generator foundation and the surrounding steam turbine platform, circulating water pit, condensate pump pit, B column and other foundation bottom marks are replaced with plain concrete, so that the above parts can be constructed simultaneously, otherwise it will take 25 to 30 days to construct the two locations, and it takes 14 days to remove the formwork of the large-volume concrete of the steam turbine. It takes time to clean up and backfill, and the backfilling period is about 40 days! 3. Due to the early water cut-off of the main plant, the corresponding installation work can be carried out in advance, which is conducive to the early entry of the installation team and the early arrival and installation of the main plant equipment and pipelines. It has a great promoting effect and important significance on the project construction.

[0027] 4. Due to the early completion of each node of the main plant, the construction period was shortened, the cost was reduced, and the economic benefits were significantly improved. According to the calculation of the construction unit, each unit saved about 1 million yuan in cost, and the two units saved about 2-3 million yuan in cost. At the same time, the construction safety risk was effectively reduced.

[0028] 5. For the EPC general contracting projects of the Electric Power Design Institute, various thermal power projects can save costs of about 12 million yuan, assuming four projects and eight units are put into operation each year.

[0029] 6. For the construction party, if the construction period is advanced by 30 days: 2X350MW unit project: Based on the average purchase price of electricity of Shaanxi Power Grid of 0.42 yuan / kwh, annual utilization hours of 4500h, equivalent to 370h in 30 days, the advance power generation income is: 70ⅹ0.42ⅹ370=108.78 million yuan.

[0030] 2X660MW unit project: 132ⅹ0.42ⅹ370=205.128 million yuan.

[0031] 2X1000MW unit project: 200ⅹ0.42ⅹ375=310.80 million yuan.

[0032] If the construction period is advanced by 50 days, the annual utilization hours are 4500h, which is equivalent to 616h: 2X350MW unit project: 70ⅹ0.42ⅹ616=181.104 million yuan.

[0033] 2X660MW unit project: 132ⅹ0.42ⅹ616=341.51 million yuan.

[0034] 2X1000MW unit project: 200ⅹ0.42ⅹ616=517.44 million yuan.

[0035] If the construction period is advanced by 60 days, the annual utilization hours are 4500 hours, which is equivalent to 740 hours in 60 days. 2X350MW unit project: 70ⅹ0.42ⅹ740=217.56 million yuan.

[0036] 2X660MW unit project: 132ⅹ0.42ⅹ740=410.25 million yuan.

[0037] 2X1000MW unit project: 200ⅹ0.42ⅹ740=621.60 million yuan.

[0038] 7. Engineering and social effects: The simultaneous pouring of concrete for both projects can reduce safety risks, construction costs, and construction period, creating prerequisites for the early commissioning of the project to generate electricity and generate revenue, and achieving mutual benefit and win-win results for all parties. It has greatly improved the technical management and project management level of all participating units, and has great practical and social significance.

[0039] The present invention and its implementation methods are described above, but such description is not restrictive. The drawings show only one of the implementation methods of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention, they can creatively design a structure and implementation method similar to the technical solution, including fine-tuning the size of the clear water formwork, the size of the wooden block, and the size of the reinforced channel steel. The above-mentioned dimensional changes should all fall within the scope of protection of the present invention.

Claims

1. A main building layout device for a thermal power plant, comprising a steam turbine generator base column (1) and a steam turbine platform column (2), characterized in that: A plain concrete formwork, a wooden block and a reinforcing channel steel are arranged between the steam turbine generator base column (1) and the steam turbine platform column (2). The plain concrete formwork, the wooden block and the reinforcing channel steel are arranged to form a minimum clear space spacing between the steam turbine generator base column (1) and the steam turbine platform column (2) to meet the requirements of synchronous casting of the steam turbine generator base column (1) and the steam turbine platform column (2).

2. The main building layout device of a thermal power plant according to claim 1, characterized in that: The casting thickness of the clear water formwork is 18 mm, the casting thickness of the wooden block is 50 mm, and the casting width of the reinforced channel steel is 220 mm.

3. The main building layout device of a thermal power plant according to claim 1, characterized in that: The casting thickness of the plain formwork is 18 mm, the casting thickness of the wooden block is 50 mm, the casting width of the reinforcing channel steel is 100 mm, and the reinforcing channel steel is staggered with the steam turbine generator base column (1).

4. The main building layout device of a thermal power plant according to claim 2 or 3, characterized in that: The minimum clear space spacing is greater than or equal to 370 mm, so as to allow for the synchronous pouring of the steam turbine generator base column (1) and the steam turbine platform column (2).

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