Combustion gas-steam circulation distributed energy station combined plant unit arrangement structure

Abstract

The invention relates to the technical field of energy stations, in particular to a fuel gas-steam circulation distributed energy station combined plant unit arrangement structure which comprises a plant body, and the plant body comprises side plants and a middle plant which are symmetrically arranged; the gas generator set is arranged in the lateral factory building, a waste heat utilization unit connected with the gas generator set is further arranged in the lateral factory building, and the exhaust end of the gas generator set is communicated with the gas inlet end of the waste heat utilization unit; the auxiliary unit is arranged in the middle plant and connected with the waste heat utilization unit, and the auxiliary unit is used for condensing steam and filtering and circulating the condensed steam. Compared with a traditional generator set, the energy conversion efficiency higher than that of the traditional generator set can be achieved under the same fuel consumption, lower operation cost and smaller carbon emission are brought, and in addition, the space utilization rate of a plant is increased through reasonable layout.

Description

Technical Field

[0001] The present invention relates to the technical field of energy stations, and in particular to a combined plant unit arrangement structure of a gas-steam cycle distributed energy station. Background Art

[0002] Energy shortage and environmental degradation have gradually become increasingly serious global problems. Gas-steam combined cycle distributed energy stations supply electricity, heat and cooling at the same time, and use energy in a cascade manner. They are characterized by high efficiency, energy saving, consumption reduction, and flexible operation. At the same time, they can also improve the power supply structure, reduce peaks and fill valleys, and improve energy supply safety and emergency response capabilities. They are the main energy supply methods that conform to the national energy development trend.

[0003] For the gas-steam cycle distributed energy station combined plant unit, the principle is to achieve the joint production of electricity and heat energy by combining gas turbines and steam turbines to efficiently utilize fuel energy. The advantages of the gas-steam cycle distributed energy station lie in its efficient energy conversion and environmental protection characteristics. By combining the advantages of gas turbines and steam turbines, this layout can generate more electricity and heat energy with the same fuel consumption. In addition, this layout also has good flexibility and adaptability, and can adjust the proportion of power generation and heating according to demand to meet the needs of different users.

[0004] However, when installing the corresponding facilities in the factory, due to the large span between the various facilities, the steam pipelines, water supply pipelines, cooling pipelines, etc. between gas-fired power generation and waste heat utilization and condensers require longer lengths, resulting in higher initial investment and larger occupied space, which reduces the space utilization rate of the factory. Summary of the invention

[0005] The purpose of the present invention is to provide a gas-steam cycle distributed energy station combined plant unit layout structure to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The gas-steam cycle distributed energy station combined plant unit layout structure includes:

[0008] The main body of the plant building comprises a symmetrically arranged side plant building and a middle plant building;

[0009] A gas generator set is arranged in the lateral plant building, and a waste heat utilization unit connected to the gas generator set is also arranged in the lateral plant building, and the exhaust end of the gas generator set is connected to the air inlet end of the waste heat utilization unit;

[0010] The auxiliary unit is arranged in the intermediate plant and connected to the waste heat utilization unit. The auxiliary unit is used for condensing steam and filtering and circulating the condensed steam.

[0011] As a further solution of the present invention: the gas generator set includes symmetrically arranged gas generator bodies, and the gas generator bodies are arranged side by side.

[0012] As a further solution of the present invention: the gas generator set also includes a turbine chassis for supporting the gas generator body, the turbine chassis is placed on the ground with a first grouting surface and a second grouting surface, and the turbine chassis is provided with a stabilizing component connected to the first grouting surface and the second grouting surface.

[0013] As a further solution of the present invention: the stabilizing component includes an embedded sleeve passing through the first grouting surface and the second grouting surface, an embedded rod is installed in the embedded sleeve, a wedge-shaped washer mounted on the embedded rod is fixed on the second grouting surface, and the embedded rod is provided with a connecting structure connected to the wedge-shaped washer.

[0014] As a further solution of the present invention: the connection structure includes a chassis connecting plate fixedly installed on the bottom of the turbine chassis and sleeved on the embedded rod, the chassis connecting plate abuts against the wedge-shaped washer, and anchor bolts are sleeved at both ends of the embedded rod, and the anchor bolts abut against the chassis connecting plate.

[0015] As a further solution of the present invention: the waste heat utilization unit includes a waste heat boiler body and a boiler auxiliary room that are symmetrically distributed in a mirror image, the waste heat boiler body and the boiler auxiliary room are arranged in a translational manner, and the air inlet end of the waste heat boiler body is connected to the exhaust end of the gas generator body.

[0016] As a further solution of the present invention: the auxiliary unit includes a condenser installed in the intermediate plant and arranged symmetrically.

[0017] As a further solution of the present invention: the auxiliary unit also includes a filter and a circulation pipeline installed in the intermediate plant, and the filter is connected to the pipeline of the condenser.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the present application combines the two power generation technologies of gas turbine and steam turbine, and can achieve higher energy conversion efficiency than traditional generator sets under the same fuel consumption, bringing lower operating costs and smaller carbon emissions. Natural gas or other fuels burn in the combustion chamber of the gas generator body to produce high-temperature and high-pressure gas, which drives the turbine blades to rotate and drives the generator to generate electricity. The high-temperature gas discharged from the gas generator body enters the waste heat utilization unit, is heated to produce high-temperature and high-pressure steam, drives the steam turbine to rotate, and further generates electricity.

[0019] The exhaust end of the gas generator body is connected to the air inlet end of the waste heat utilization unit, and the high-temperature gas generated by the gas generator body can be transported to the waste heat utilization unit for power generation through the waste heat utilization unit. The gas generator body adopts the bottom outlet method, optimizes the closed busbar layout, and improves reliability and aesthetics. At the same time, the side plant and the middle plant adopt a single-span, large-span, and large-platform design, which simplifies the internal layout and improves the maintenance convenience and civil engineering economic benefits.

[0020] The gas generator body and auxiliary units are arranged in a longitudinal row, so that various production equipment can be reasonably arranged in the steam engine room with less space, which is conducive to improving the effective utilization rate of the plant space, and can correspondingly reduce the floor space of the plant body and reduce the initial investment in the civil engineering of the plant body. The two condensers share a circulation pipeline to enter and exit the plant, which reduces the length of the circulation pipeline and optimizes the engineering workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a structural schematic diagram of an embodiment of a combined plant unit layout structure of a gas-steam cycle distributed energy station.

[0022] Figure 2 It is a structural schematic diagram of a gas generator set in an embodiment of the combined plant unit layout structure of a gas-steam cycle distributed energy station.

[0023] Figure 3 It is a structural schematic diagram of the turbine chassis in the embodiment of the combined plant unit layout structure of the gas-steam cycle distributed energy station.

[0024] Figure 4 It is a schematic diagram of the structure of some gas-fired generator sets in the embodiment of the combined plant unit layout structure of a gas-steam cycle distributed energy station.

[0025] In the figure: 1. Steam turbine chassis; 2. Embedded sleeve; 3. Embedded rod; 301. Anchor bolt; 4. First grouting surface; 5. Second grouting surface; 6. Wedge-shaped washer; 7. Chassis connecting plate; 8. Condenser; 9. Waste heat boiler body; 10. Boiler auxiliary room; 11. Filter; 12. Circulation pipeline; 13. Gas generator body; 14. Plant body; 1401. Lateral plant; 1402. Middle plant. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0028] See also Figure 1 to Figure 4 In an embodiment of the present invention, a gas-steam cycle distributed energy station combined plant unit layout structure includes:

[0029] The plant body 14 includes a symmetrically arranged side plant 1401 and a middle plant 1402. The gas-steam combined cycle generator set is an efficient power generation system that combines two power generation technologies, gas turbine and steam turbine, and can achieve higher energy conversion efficiency than traditional generator sets under the same fuel consumption, resulting in lower operating costs and smaller carbon emissions. This power generation technology has been widely used in power, industry and other fields.

[0030] The gas generator set is arranged in the lateral plant 1401, and the gas generator set includes a symmetrically arranged gas generator body 13, and the gas generator body 13 is arranged side by side. The gas generator set also includes a steam turbine chassis 1 for carrying the gas generator body 13, and the steam turbine chassis 1 is placed on the ground poured with a first grouting surface 4 and a second grouting surface 5. The steam turbine chassis 1 is provided with a stabilizing component connected to the first grouting surface 4 and the second grouting surface 5, wherein the stabilizing component includes a The embedded sleeve 2 of the second grouting surface 5, the embedded sleeve 2 is equipped with an embedded rod 3, the second grouting surface 5 is fixed with a wedge-shaped washer 6 sleeved on the embedded rod 3, the embedded rod 3 is provided with a connecting structure connected to the wedge-shaped washer 6, the above-mentioned connecting structure includes a chassis connecting plate 7 fixedly mounted on the bottom of the turbine chassis 1 and sleeved on the embedded rod 3, the chassis connecting plate 7 abuts against the wedge-shaped washer 6, and the two ends of the embedded rod 3 are sleeved with anchor bolts 301, and the anchor bolts 301 abut against the chassis connecting plate 7.

[0031] In detail, natural gas or other fuels burn in the combustion chamber of the gas generator body 13 to produce high-temperature and high-pressure gas, which drives the turbine blades to rotate and drives the generator to generate electricity. The high-temperature gas discharged from the gas generator body 13 enters the waste heat utilization unit, is heated to produce high-temperature and high-pressure steam, drives the steam turbine to rotate, and further generates electricity. The steam turbine chassis 1 is the core structure of the gas generator body 13, and needs to have sufficient strength, rigidity and dynamic characteristics to resist equipment loads and vibrations. Therefore, it is necessary to ensure the stability of the steam turbine chassis 1 so that the steam turbine chassis 1 can meet the requirements of stable operation of the unit. When installing the steam turbine chassis 1, it can be poured on the ground first to form a first grouting surface 4 and a second grouting surface 5 on the ground. Under the action of the first grouting surface 4 and the second grouting surface 5, the rigidity and strength of the ground are enhanced to meet the support force for the gas generator body 13. At the same time, it can be installed in the first grouting surface 4 and the second grouting surface 5. The embedded sleeve 2 is installed, and the embedded rod 3 is inserted into the embedded sleeve 2. When the insertion depth of the embedded rod 3 reaches the required requirement, the anchor bolt 301 can be installed at the bottom of the embedded rod 3 to fix the bottom of the embedded rod 3. After the embedded rod 3 is installed, the wedge-shaped washer 6 can be inserted into the embedded rod 3, and the wedge-shaped washer 6 can be fixed to the second grouting surface 5 by bolts. Under the action of the wedge-shaped washer 6, the stability of the embedded rod 3 is further enhanced. At this time, the chassis connecting plate 7 can be inserted into the embedded rod 3 and abutted against the wedge-shaped washer 6. At the same time, the chassis connecting plate 7 is fixed to the embedded rod 3 by the anchor bolt 301. Under the action of the wedge-shaped washer 6 and the embedded rod 3, the force and vibration resistance of the turbine chassis 1 are well guaranteed, thereby ensuring the normal operation of the gas generator body 13.

[0032] Among them, the exhaust end of the gas generator body 13 is connected to the air inlet end of the waste heat utilization unit, and the high-temperature gas generated by the gas generator body 13 can be transported to the waste heat utilization unit for power generation through the waste heat utilization unit. The gas generator body 13 adopts a lower outlet method, optimizes the closed busbar layout, and improves reliability and aesthetics. At the same time, the lateral plant 1401 and the middle plant 1402 adopt a single-span, large-span, and large-platform design, which simplifies the internal layout and improves maintenance convenience and civil engineering economic benefits.

[0033] The lateral plant building 1401 is also provided with a waste heat utilization unit connected to the gas-fired generator set. The exhaust end of the gas-fired generator set is connected to the air intake end of the waste heat utilization unit. The waste heat utilization unit includes a waste heat boiler body 9 and a boiler auxiliary room 10 that are symmetrically distributed in a mirror image. The waste heat boiler body 9 and the boiler auxiliary room 10 are arranged in a translational manner. The air intake end of the waste heat boiler body 9 is connected to the exhaust end of the gas-fired generator body 13.

[0034] It should be noted that the air inlet end of the waste heat boiler body 9 is connected to the exhaust end of the gas generator body 13. This arrangement structure helps to reduce the length of pipelines and cables, reduce the pressure drop of pipelines, thereby reducing construction investment and improving economy. At the same time, it can also improve the space utilization rate of auxiliary plant, and in the process of pipeline gas transportation, due to the short length of the pipeline, the heat loss in the gas transportation process is also small, therefore, the heat utilization rate of the waste heat boiler body 9 can be increased, and when the high-temperature gas is introduced into the waste heat boiler body 9, the water in the boiler can be heated to convert it into high-pressure steam. These steams are then transported to the steam turbine to drive the steam turbine to rotate and generate electricity. This combined cycle method not only improves the utilization rate of energy, but also reduces the emission of pollutants. The boiler auxiliary room 10 is arranged on the inner side of the waste heat boiler body 9, and the outer land can be used to arrange other auxiliary rooms, thereby increasing the space utilization rate of the plant.

[0035] An auxiliary unit is arranged in the intermediate plant 1402 and connected to the waste heat utilization unit. The auxiliary unit is used to condense steam and filter and circulate the condensed steam. The auxiliary unit includes a condenser 8 installed in the intermediate plant 1402 and symmetrically arranged. The auxiliary unit also includes a filter 11 and a circulation pipeline 12 installed in the intermediate plant 1402. The filter 11 is connected to the pipeline of the condenser 8.

[0036] Furthermore, the gas generator body 13 and the auxiliary units are arranged in a longitudinal series, so that various production equipment can be reasonably arranged in the steam engine room with less space, which is beneficial to improving the effective utilization rate of the plant space, and can correspondingly reduce the space occupied by the plant body 14, and reduce the initial investment in the construction of the plant body 14. The air inlet end of the condenser 8 is connected to the exhaust end of the waste heat boiler body 9. Through the condenser 8, the gas can be condensed so that the gas condenses into liquid. Since the two condensers 8 are symmetrically arranged, and the filter 11 and the circulation pipeline 12 are located between the two condensers 8, the size of the interconnected pipelines is shorter, thereby achieving the purpose of reducing the difficulty of construction. The liquid produced after condensation by the condenser 8 will be transported to the filter 11. Under the action of the filter 11, the condensed liquid is filtered and transported to the circulation pipeline 12. Therefore, the two condensers 8 share a circulation pipeline 12 to enter and exit the plant, which reduces the length of the circulation pipeline 12 and optimizes the engineering volume.

[0037] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. The gas-steam cycle distributed energy station combined plant unit layout structure is characterized by: include: A plant building body (14), wherein the plant building body (14) comprises symmetrically arranged lateral plant buildings (1401) and a middle plant building (1402); A gas-fired generator set is arranged in the lateral plant (1401), and a waste heat utilization unit connected to the gas-fired generator set is also arranged in the lateral plant (1401), and the exhaust end of the gas-fired generator set is connected to the intake end of the waste heat utilization unit; An auxiliary unit is arranged in the intermediate plant (1402) and connected to the waste heat utilization unit. The auxiliary unit is used to condense steam and filter and circulate the condensed steam.

2. The gas-steam cycle distributed energy station combined plant unit layout structure according to claim 1 is characterized in that: The gas generator set comprises symmetrically arranged gas generator bodies (13), and the gas generator bodies (13) are arranged side by side.

3. The gas-steam cycle distributed energy station combined plant unit layout structure according to claim 2 is characterized in that: The gas generator set further comprises a steam turbine chassis (1) for supporting the gas generator body (13); the steam turbine chassis (1) is placed on a ground surface on which a first grouting surface (4) and a second grouting surface (5) are poured; and a stabilizing component connected to the first grouting surface (4) and the second grouting surface (5) is provided on the steam turbine chassis (1).

4. The gas-steam cycle distributed energy station combined plant unit layout structure according to claim 3 is characterized in that: The stabilizing component comprises an embedded sleeve (2) penetrating the first grouting surface (4) and the second grouting surface (5); an embedded rod (3) is installed in the embedded sleeve (2); a wedge-shaped washer (6) sleeved on the embedded rod (3) is fixed on the second grouting surface (5); and a connecting structure connected to the wedge-shaped washer (6) is provided on the embedded rod (3).

5. The gas-steam cycle distributed energy station combined plant unit layout structure according to claim 4 is characterized in that: The connection structure comprises a chassis connection plate (7) fixedly mounted on the bottom of the steam turbine chassis (1) and sleeved on the embedded rod (3), the chassis connection plate (7) abutting against the wedge-shaped washer (6), anchor bolts (301) sleeved on both ends of the embedded rod (3), and the anchor bolts (301) abutting against the chassis connection plate (7).

6. The gas-steam cycle distributed energy station combined plant unit layout structure according to claim 2 is characterized in that: The waste heat utilization unit comprises a waste heat boiler body (9) and a boiler auxiliary room (10) which are symmetrically distributed in a mirror image. The waste heat boiler body (9) and the boiler auxiliary room (10) are arranged in a translational manner. The air inlet end of the waste heat boiler body (9) is connected to the exhaust end of the gas generator body (13).

7. The gas-steam cycle distributed energy station combined plant unit layout structure according to claim 1 is characterized in that: The auxiliary unit includes a condenser (8) installed in the intermediate plant (1402) and arranged symmetrically.

8. The gas-steam cycle distributed energy station combined plant unit layout structure according to claim 7 is characterized in that: The auxiliary unit also includes a filter (11) and a circulation pipeline (12) installed in the intermediate plant (1402), and the filter (11) is connected to the pipeline of the condenser (8).

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