Boiler thermodynamic system structure

Abstract

The utility model discloses a boiler thermodynamic system structure which comprises a waste heat boiler, a chimney is fixedly connected to the left side of the waste heat boiler, a chimney baffle door is movably installed at the lower end of the left side of the chimney, and an air inlet baffle door is movably installed at the upper end of the right side of the waste heat boiler. An air inlet cooler is fixedly installed at the upper end of the right side of the waste heat boiler and located on the right side of the air inlet baffle door through a pipeline, and a first one-way valve and a second one-way valve are sequentially and fixedly installed on the right side of the air inlet cooler from top to bottom. According to the utility model, the air inlet baffle door and the chimney baffle door are opened, and the outside air can be driven to be conveyed into the air inlet cooler by the second one-way valve under the action of rapid working of the cooling fan, so that the conveyed air can be subjected to heat exchange and cooling by cold water flowing through the air inlet cooler; and air can be quickly blown into the waste heat boiler through a pipeline, so that the flow rate of the air in the waste heat boiler is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat boilers, in particular to a boiler thermal system structure. Background Art

[0002] The function of a waste heat boiler in a combined gas cycle unit is mainly to use the exhaust gas discharged from a gas turbine as a heat source, expand the heating surface through enhanced heat transfer elements, improve the thermal efficiency, and produce steam for further utilization. The main difference between a waste heat boiler and a conventional boiler lies in its heat source and heat energy conversion method. The waste heat boiler mainly uses the exhaust gas discharged from the gas turbine as a heat source, so there is no need to be equipped with a combustion system (unless there is a requirement for supplementary combustion), and the ventilation comes from the exhaust of the gas turbine. This design enables the waste heat boiler to generate steam under multi-pressure conditions and improve the heat recovery efficiency. At present, during the use of the waste heat boiler, it is often necessary for personnel to regularly perform maintenance operations on the internal components. Moreover, since the waste heat boiler often takes a long time to cool down during the cooling process, it causes personnel to spend a long waiting time, which affects the efficiency of the maintenance operations of the personnel. At the same time, it leads to a long shutdown time of the combined gas cycle unit, thus having an adverse impact on the normal production operation. Content of the Utility Model

[0003] The purpose of the utility model is to provide a boiler thermal system structure, which has the advantages of being able to quickly cool down the inside during the maintenance operation of the waste heat boiler and reducing the shutdown waiting time during the maintenance process.

[0004] To achieve the above purpose, the utility model provides the following technical solution: a boiler thermal system structure, including a waste heat boiler. A chimney is fixedly connected to the left side of the waste heat boiler. A chimney damper door is movably installed at the lower end of the left side of the chimney. An intake damper door is movably installed at the upper end of the right side of the waste heat boiler. An intake air cooler is fixedly installed through a pipeline at the upper end of the right side of the waste heat boiler and to the right of the intake damper door. A first one-way valve and a second one-way valve are fixedly installed on the right side of the intake air cooler from top to bottom in sequence. The input end of the second one-way valve is fixedly installed with a cooling fan through a pipeline. A gas turbine is fixedly installed at the right end of the top of the waste heat boiler. A combustion chamber is fixedly installed on the right side of the gas turbine through a pipeline. A low-pressure economizer A, a hot water heater, a low-pressure economizer B, a low-pressure evaporator, a high-pressure economizer, a low-pressure superheater, a high-pressure evaporator, and a high-pressure superheater are fixedly installed in the inner cavity of the waste heat boiler from left to right in sequence. A condenser is fixedly installed through a pipeline between the right end of the top of the high-pressure superheater and the right end of the top of the low-pressure superheater.

[0005] As a preferred embodiment, a booster pump is fixedly installed at the left end of the bottom of the hot water heater through a pipeline. A natural gas heater is fixedly installed between the right side of the booster pump and the right end of the bottom of the hot water heater through a pipeline. A pre-module is fixedly installed between the right side of the natural gas heater and the bottom of the combustion chamber through a pipeline.

[0006] As a preferred embodiment, a compressor is fixedly installed at the upper end of the left side of the combustion chamber through a pipeline. A speed regulation gearbox is fixedly installed between the middle ends of the compressor and the gas turbine. A gas turbine engine is fixedly installed at the top of the speed regulation gearbox. A control valve is fixedly installed between the right side of the compressor and the upper end of the left side of the intake air cooler through a pipeline.

[0007] As a preferred embodiment, a high-pressure steam drum is fixedly installed between the right end of the top of the high-pressure economizer and the left end of the top of the high-pressure superheater through a pipeline. The bottom of the high-pressure steam drum is fixedly installed at the top of the high-pressure evaporator through a pipeline. A high-pressure feed water pump is fixedly installed at the left end of the top of the high-pressure economizer through a pipeline. A low-pressure steam drum is fixedly installed between the top of the high-pressure feed water pump and the top of the low-pressure evaporator through a pipeline. The right end of the top of the low-pressure steam drum is fixedly installed at the left end of the top of the low-pressure superheater through a pipeline. An deaerator is fixedly installed at the top of the low-pressure steam drum. The top of the deaerator is fixedly installed at the right end of the top of the low-pressure economizer B through a pipeline.

[0008] As a preferred embodiment, a low-pressure recirculation pump is fixedly installed between the left end of the top of the low-pressure economizer B and the top of the low-pressure economizer A through a pipeline. A condensate pump is fixedly installed at the bottom of the condenser through a pipeline. A shaft seal heater is fixedly installed at the top of the condensate pump through a pipeline. An industrial extraction steam return water cooler is fixedly installed between the bottom of the shaft seal heater and the left side of the low-pressure recirculation pump through a pipeline. The right side of the industrial extraction steam return water cooler is fixedly installed at the top of the condenser through a pipeline.

[0009] As a preferred embodiment, a steam turbine is fixedly installed between the top of the condenser and the right end of the top of the high-pressure superheater through a pipeline. The left side of the steam turbine is fixedly installed at the right end of the top of the low-pressure superheater through a pipeline.

[0010] As a preferred embodiment, a steam turbine engine is fixedly installed at the top of the steam turbine.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. The utility model can drive the outside air to be transported into the intake air cooler through the second one-way valve by opening the intake baffle door and the chimney baffle door, and under the action of the rapid operation of the cooling fan. While the transported air can be heat-exchanged and cooled by the cold water flowing through the intake air cooler, it can be quickly blown into the waste heat boiler through the pipeline, greatly improving the air flow rate inside the waste heat boiler. And the cooled air can effectively cool the inside of the waste heat boiler and its internal components during the rapid flow process, and then quickly discharge to the outside through the opening opened by the chimney baffle door on the chimney, effectively improving the air discharge speed, avoiding the slow upward flow of the air flowing through the waste heat boiler through the chimney, effectively improving the cooling effect, greatly reducing the time required for cooling inside the waste heat boiler, and bringing great convenience to the maintenance work of personnel.

[0013] 2. Through the setting of the booster pump, the utility model can boost the pipeline between the natural gas heater and the booster pump. Through the setting of the control valve, it is convenient for personnel to close the pipeline between the compressor and the intake air cooler, avoiding the air transported by the cooling fan from being diverted into the compressor during the cooling process inside the waste heat boiler. Through the setting of the high-pressure feed water pump, the utility model can pressurize the pipeline between the low-pressure steam drum and the high-pressure economizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the system schematic diagram of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the utility model.

[0016] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the utility model. The "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0017] Embodiment 1:

[0018] Please refer to Figure 1As shown in the figure, the utility model provides a boiler thermal system structure, including a waste heat boiler. A chimney is fixedly connected to the left side of the waste heat boiler. A chimney baffle door is movably installed at the lower end on the left side of the chimney. An intake baffle door is movably installed at the upper end on the right side of the waste heat boiler. An intake air cooler is fixedly installed through a pipeline at the upper end on the right side of the waste heat boiler and to the right of the intake baffle door. A first one-way valve and a second one-way valve are fixedly installed in sequence from top to bottom on the right side of the intake air cooler. The input end of the second one-way valve is fixedly installed with a cooling fan through a pipeline. A gas turbine is fixedly installed at the right end of the top of the waste heat boiler. A combustion chamber is fixedly installed through a pipeline on the right side of the gas turbine. A low-pressure economizer A, a hot water heater, a low-pressure economizer B, a low-pressure evaporator, a high-pressure economizer, a low-pressure superheater, a high-pressure evaporator, and a high-pressure superheater are fixedly installed in sequence from left to right in the inner cavity of the waste heat boiler. A condenser is fixedly installed through a pipeline between the right end of the top of the high-pressure superheater and the right end of the top of the low-pressure superheater.

[0019] In this technical solution, by opening the intake baffle door and the chimney baffle door, and under the action of the rapid operation of the cooling fan, the outside air can be driven to be conveyed into the intake air cooler through the second one-way valve. While the conveyed air can be heat-exchanged and cooled by the cold water flowing through the intake air cooler, it can be quickly blown into the interior of the waste heat boiler through the pipeline, greatly improving the air flow rate inside the waste heat boiler. And the cooled air can effectively cool the interior of the waste heat boiler and its internal components during the rapid flow process, and then quickly discharge to the outside through the opening of the chimney baffle door on the chimney, effectively improving the air discharge speed, avoiding the slow upward flow of the air flowing through the interior of the waste heat boiler through the chimney, effectively improving the cooling effect, greatly reducing the time required for cooling inside the waste heat boiler, and bringing great convenience to the maintenance work of personnel.

[0020] Embodiment 2:

[0021] On the basis of Embodiment 1, the utility model is as Figure 1As shown in the figure, a booster pump is fixedly installed at the left end of the bottom of the hot water heater through a pipeline. A natural gas heater is fixedly installed between the right side of the booster pump and the right end of the bottom of the hot water heater through a pipeline. A pre-module is fixedly installed between the right side of the natural gas heater and the bottom of the combustion chamber through a pipeline. A compressor is fixedly installed at the upper end of the left side of the combustion chamber through a pipeline. A speed control gearbox is fixedly installed between the middle ends of the compressor and the gas turbine. A gas turbine engine is fixedly installed at the top of the speed control gearbox. A control valve is fixedly installed between the right side of the compressor and the upper end of the left side of the inlet air cooler through a pipeline. A high-pressure steam drum is fixedly installed between the right end of the top of the high-pressure economizer and the left end of the top of the high-pressure superheater through a pipeline. The bottom of the high-pressure steam drum is fixedly installed at the top of the high-pressure evaporator through a pipeline. A high-pressure feed water pump is fixedly installed at the left end of the top of the high-pressure economizer through a pipeline. A low-pressure steam drum is fixedly installed between the top of the high-pressure feed water pump and the top of the low-pressure evaporator through a pipeline. The right end of the top of the low-pressure steam drum is fixedly installed at the left end of the top of the low-pressure superheater through a pipeline. An deaerator is fixedly installed at the top of the low-pressure steam drum. The top of the deaerator is fixedly installed at the right end of the top of the low-pressure economizer B through a pipeline. A low-pressure recirculation pump is fixedly installed between the left end of the top of the low-pressure economizer B and the top of the low-pressure economizer A through a pipeline. A condensate pump is fixedly installed at the bottom of the condenser through a pipeline. A shaft seal heater is fixedly installed at the top of the condensate pump through a pipeline. An industrial extraction steam return water cooler is fixedly installed between the bottom of the shaft seal heater and the left side of the low-pressure recirculation pump through a pipeline. The right side of the industrial extraction steam return water cooler is fixedly installed at the top of the condenser through a pipeline. A steam turbine is fixedly installed between the top of the condenser and the right end of the top of the high-pressure superheater through a pipeline. The left side of the steam turbine is fixedly installed at the right end of the top of the low-pressure superheater through a pipeline. A steam turbine engine is fixedly installed at the top of the steam turbine.

[0022] In this technical solution, through the setting of the booster pump, the pipeline between the natural gas heater and the booster pump can be boosted. Through the setting of the control valve, it is convenient for personnel to close the pipeline between the compressor and the inlet air cooler, avoiding the air transported by the cooling fan being diverted into the compressor during the process of the waste heat boiler cooling down internally. Through the setting of the high-pressure feed water pump, the pipeline between the low-pressure steam drum and the high-pressure economizer can be pressurized.

[0023] The working principle of the present utility model is as follows: When personnel need to maintain the inside of the waste heat boiler, the intake baffle door and the chimney baffle door are opened, and under the action of the rapid operation of the cooling fan, the outside air can be driven to be conveyed into the intake air cooler through the second one-way valve. While the conveyed air can be heat-exchanged and cooled by the cold water flowing through the intake air cooler, it can be quickly blown into the inside of the waste heat boiler through the pipeline, greatly improving the air flow rate inside the waste heat boiler. And the cooled air can effectively cool the inside of the waste heat boiler and its internal components during the rapid flow process, and then quickly discharge to the outside through the opening opened by the chimney baffle door on the chimney, effectively improving the air discharge speed, avoiding the slow upward flow of the air flowing through the inside of the waste heat boiler through the chimney, and effectively improving the cooling effect, greatly reducing the time required for cooling inside the waste heat boiler, bringing great convenience to the maintenance operation of personnel.

[0024] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible on the premise of substantially not deviating from the novel teachings and advantages of the subject matter described in this application (for example, the dimensions, scales, structures, shapes and proportions of various components, and parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, color, orientation changes, etc.). For example, an element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature, number or position of discrete elements can be changed or altered. Therefore, all such modifications are intended to be included within the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structure that performs the recited function described herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions can be made in the design, operating conditions and arrangements of the exemplary embodiments without departing from the scope of the present utility model. Therefore, the present utility model is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0025] In addition, in order to provide a concise description of the exemplary embodiments, not all features of the actual embodiments may be described (i.e., those features that are not relevant to the currently considered best mode of implementing the present utility model, or those features that are not relevant to the implementation of the present utility model).

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting the protection scope of the present utility model. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present utility model.

Claims

1. A boiler thermal system structure, including a waste heat boiler, characterized in that: A chimney is fixedly connected to the left side of the waste heat boiler, a chimney damper door is movably installed at the lower end of the left side of the chimney, an air intake damper door is movably installed at the upper end of the right side of the waste heat boiler, an air intake cooler is fixedly installed through a pipeline at the upper end of the right side of the waste heat boiler and located to the right of the air intake damper door, a first non-return valve and a second non-return valve are fixedly installed on the right side of the air intake cooler from top to bottom, a cooling fan is fixedly installed on the input end of the second non-return valve through a pipeline, a gas turbine is fixedly installed on the right end of the top of the waste heat boiler, a combustion chamber is fixedly installed on the right side of the gas turbine through a pipeline, a low-pressure economizer A, a hot water heater, a low-pressure economizer B, a low-pressure evaporator, a high-pressure economizer, a low-pressure superheater, a high-pressure evaporator and a high-pressure superheater are fixedly installed in the inner cavity of the waste heat boiler from left to right, and a condenser is fixedly installed between the right end of the top of the high-pressure superheater and the right end of the top of the low-pressure superheater through a pipeline.

2. A boiler thermal system structure according to claim 1, characterized in that: A booster pump is fixedly installed at the left end of the bottom of the hot water heater through a pipe, a natural gas heater is fixedly installed between the right side of the booster pump and the right end of the bottom of the hot water heater through a pipe, and a front module is fixedly installed between the right side of the natural gas heater and the bottom of the combustion chamber through a pipe.

3. A boiler thermal system structure according to claim 1, characterized in that: A compressor is fixedly installed at the upper end of the left side of the combustion chamber through a pipeline, a speed regulating gear box is fixedly installed between the middle end of the compressor and the middle end of the gas turbine, a gas turbine engine is fixedly installed on the top of the speed regulating gear box, and a control valve is fixedly installed between the right side of the compressor and the upper end of the left side of the intake air cooler through a pipeline.

4. A boiler thermal system structure according to claim 1, characterized in that: A high-pressure steam drum is fixedly installed between the right end of the top of the high-pressure economizer and the left end of the top of the high-pressure superheater through a pipeline, the bottom of the high-pressure steam drum is fixedly installed on the top of the high-pressure evaporator through a pipeline, a high-pressure feed water pump is fixedly installed on the left end of the top of the high-pressure economizer through a pipeline, a low-pressure steam drum is fixedly installed between the top of the high-pressure feed water pump and the top of the low-pressure evaporator through a pipeline, the right end of the top of the low-pressure steam drum is fixedly installed on the left end of the top of the low-pressure superheater through a pipeline, a deaerator is fixedly installed on the top of the low-pressure steam drum, and the top of the deaerator is fixedly installed on the right end of the top of the low-pressure economizer B through a pipeline.

5. A boiler thermal system structure according to claim 1, characterized in that: A low-pressure recirculation pump is fixedly installed between the left end of the top of the low-pressure economizer B and the top of the low-pressure economizer A through a pipeline, a condensate pump is fixedly installed at the bottom of the condenser through a pipeline, a shaft seal heater is fixedly installed at the top of the condensate pump through a pipeline, an industrial extraction steam return water cooler is fixedly installed between the bottom of the shaft seal heater and the left side of the low-pressure recirculation pump through a pipeline, and the right side of the industrial extraction steam return water cooler is fixedly installed on the top of the condenser through a pipeline.

6. A boiler thermal system structure according to claim 1, characterized in that: A steam turbine is fixedly installed between the top of the condenser and the right end of the top of the high-pressure superheater through a pipeline, and the left side of the steam turbine is fixedly installed at the right end of the top of the low-pressure superheater through a pipeline.

7. A boiler thermal system structure according to claim 6, characterized in that: A steam turbine engine is fixedly installed on the top of the steam turbine.

Images