Equipment optimization method, device and equipment for exhaust steam waste heat heating system

Abstract

The present invention provides an equipment optimization method, device, and apparatus for an exhaust steam waste heat heating system. The method comprises: obtaining basic heating indicators for a target area to which a target exhaust steam waste heat heating system belongs; determining basic system parameters for the target exhaust steam waste heat heating system based on the basic heating indicators; determining an equipment selection scheme for the pre-condenser, the steam booster, the steam booster condenser, and the heat network heater based on the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, the steam booster optimization factor, and the basic system parameters; adjusting the steam booster optimization factor to obtain multiple optional equipment selection schemes for the pre-condenser, the steam booster, the steam booster condenser, and the heat network heater; and determining a target equipment selection scheme from the multiple optional equipment selection schemes based on the steam booster optimization factor. The scheme of the present invention can optimize the design and equipment selection of the exhaust steam waste heat heating system and improve the thermal efficiency of the unit.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal power generation, and in particular to an equipment optimization method, device and equipment for an exhaust steam waste heat heating system. Background Art

[0002] Due to their technical characteristics, thermal power generators, which burn non-renewable fuels like coal and oil, lose approximately 60% of the heat they generate to the environment through cooling losses in the turbine's low-pressure exhaust steam condensation cycle. This results in significant waste of non-renewable fuels and pollutant emissions. Consequently, conventional steam extraction heating systems have very low thermal efficiency.

[0003] In order to improve the heating efficiency of the units and increase energy utilization, the use of waste heat heating systems from thermal power generators, which recycles the heat originally wasted from cold sources as the main heat source for urban centralized heating, has become one of the main heating solutions.

[0004] However, as exhaust steam waste heat heating systems become increasingly complex, system design and equipment selection become increasingly challenging, as does ensuring that all components within the system operate in concert to achieve global optimization. Currently, the design and equipment selection of exhaust steam waste heat heating systems are based on engineering specifications and experience, and no directly applicable optimization design method exists. Consequently, it's impossible to optimize systems and equipment during the project construction phase, thereby reducing construction costs. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an equipment optimization method, device and equipment for an exhaust steam waste heat heating system, which can optimize the design and equipment selection of the exhaust steam waste heat heating system and improve the thermal efficiency of the unit.

[0006] In order to solve the above technical problems, the technical solutions of the present invention are as follows:

[0007] An equipment optimization method for an exhaust steam waste heat heating system is applied to a target exhaust steam waste heat heating system, wherein the target exhaust steam waste heat heating system is a three-stage heating system for heating circulating water in a city heating network through a pre-condenser, a steam booster and a steam booster condenser, and a heating network heater, comprising:

[0008] Obtain basic heating indicators for the target area of ​​the target exhaust steam waste heat heating system;

[0009] Determine the basic system parameters of the target exhaust steam waste heat heating system based on the basic heating indicators; the basic system parameters include the circulating water volume of the heating network and the total power of the target exhaust steam waste heat heating system;

[0010] Obtain system operating parameters of the pre-condenser and turbine low-pressure cylinder, as well as the steam booster optimization factor;

[0011] Determine the equipment selection scheme for the pre-condenser, steam booster, steam booster condenser, and heating network heater based on the system operating parameters of the pre-condenser and steam turbine low-pressure cylinder, the steam booster optimization factor, and the basic system parameters;

[0012] Adjusting the steam booster optimization factor to obtain multiple optional equipment selection schemes for pre-condensers, steam boosters, steam booster condensers, and heating network heaters;

[0013] According to the steam booster optimization factor, a target equipment selection scheme is determined from a plurality of optional equipment selection schemes.

[0014] Optionally, based on the basic heating indicators, basic system parameters of the target exhaust steam waste heat heating system are determined, including:

[0015] Determining the heating load of the target exhaust steam waste heat heating system based on the basic heating indicators;

[0016] Obtain the supply and return water temperature difference of the heat network of the target exhaust steam waste heat heating system under the climate environment of the target area;

[0017] The basic system parameters of the target exhaust steam waste heat heating system are determined based on the heating heat load and the supply and return water temperature difference of the heating network.

[0018] Optionally, based on the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, the steam booster optimization factor and the basic system parameters, the equipment selection scheme for the pre-condenser, the steam booster, the steam booster condenser and the heating network heater is determined, including:

[0019] Determine the equipment selection scheme for the pre-condenser according to the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, as well as the basic system parameters; the equipment selection scheme for the pre-condenser includes the exhaust steam consumption of the pre-condenser and the equipment selection power of the pre-condenser;

[0020] Determining an initial equipment selection plan for the steam booster and the steam booster condenser based on the steam booster optimization factor; the initial equipment selection plan for the steam booster and the steam booster condenser includes: steam booster condenser back pressure, steam booster outlet mixed steam consumption, exhaust steam consumption in the steam booster condenser mixed steam, and steam consumption of the steam booster after water spraying and desuperheating;

[0021] Determining the amount of unused exhaust steam in the initial equipment selection plan for the steam booster and steam booster condenser;

[0022] Modifying the initial equipment selection plan according to the unused exhaust steam amount to obtain an equipment selection plan for a steam booster and a steam booster condenser;

[0023] According to the equipment selection scheme of the pre-condenser, the equipment selection scheme of the steam booster and the steam booster condenser, the equipment selection scheme of the heating network heater is obtained.

[0024] Optionally, based on the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, as well as the basic system parameters, an equipment selection scheme for the pre-condenser is determined, including:

[0025] Determine the exhaust steam consumption of the pre-condenser and the selected power of the pre-condenser equipment according to the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, as well as the basic system parameters; the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine include: the circulating water outlet temperature of the pre-condenser, the water enthalpy value of the pre-condenser, the exhaust back pressure of the low-pressure cylinder of the steam turbine, and the exhaust enthalpy value of the low-pressure cylinder of the steam turbine;

[0026] According to the exhaust steam consumption of the pre-condenser and the equipment selection power of the pre-condenser, an equipment selection scheme for the pre-condenser is obtained.

[0027] Optionally, determining an initial equipment selection plan for the steam booster and the steam booster condenser based on the steam booster optimization factor includes:

[0028] determining the back pressure of the steam booster condenser according to the steam booster pressure optimization factor in the steam booster optimization factor;

[0029] Obtain the exhaust enthalpy value of the steam booster and the drain enthalpy value of the steam booster condenser;

[0030] According to the exhaust enthalpy value of the steam booster and the drain enthalpy value of the condenser of the steam booster, the mixed steam consumption at the outlet of the steam booster is obtained;

[0031] According to the steam booster induction steam optimization factor and the steam booster outlet mixed steam usage in the steam booster optimization factor, the exhaust steam usage in the steam booster condenser mixed steam is obtained;

[0032] The power steam consumption of the steam booster after water spraying and temperature reduction is obtained according to the difference between the consumption of the mixed steam at the outlet of the steam booster and the consumption of the exhaust steam in the mixed steam of the steam booster condenser;

[0033] An initial equipment selection plan for the steam booster and steam booster condenser is obtained based on the steam booster condenser back pressure, the steam booster outlet mixed steam consumption, the exhaust steam consumption in the steam booster condenser mixed steam and the power steam consumption after water spraying and temperature reduction of the steam booster.

[0034] Optionally, determining the amount of unused exhaust steam in the initial equipment selection plan for the steam booster and the steam booster condenser includes:

[0035] Obtaining the total available amount of exhaust steam from the thermal power plant based on a heat balance diagram of the target exhaust steam waste heat heating system;

[0036] Obtaining the used exhaust steam amount in the initial equipment selection scheme according to the sum of the exhaust steam amount of the pre-condenser and the exhaust steam amount in the mixed steam of the steam booster condenser;

[0037] The unused exhaust steam amount in the initial equipment selection scheme of the steam booster and the steam booster condenser is obtained according to the difference between the total available exhaust steam amount and the used exhaust steam amount of the thermal power plant.

[0038] Optionally, the initial equipment selection plan is modified according to the unused exhaust steam amount to obtain an equipment selection plan for a steam booster and a steam booster condenser, including:

[0039] According to the sum of the unused exhaust steam amount and the used exhaust steam amount in the initial equipment selection plan, the exhaust steam amount in the mixed steam of the steam booster condenser is corrected;

[0040] According to the steam booster induction optimization factor and the exhaust steam usage in the steam booster condenser mixed steam, the power steam usage after water spraying and desuperheating of the booster is obtained.

[0041] According to the sum of the exhaust steam consumption in the steam mixture of the steam booster condenser and the power steam consumption after the steam booster water spraying and desuperheating, the steam mixture consumption at the outlet of the steam booster is corrected;

[0042] Determine the selected power of the condenser equipment of the steam booster according to the modified mixed steam consumption at the outlet of the steam booster;

[0043] According to the booster condenser back pressure, the booster condenser equipment selection power, the amount of exhaust steam in the corrected booster condenser mixed steam, the amount of motive steam after corrected booster water spray cooling, and the amount of corrected booster outlet mixed steam, an equipment selection plan for the booster and the booster condenser is obtained.

[0044] Optionally, the equipment selection scheme for the heating network heater is obtained based on the equipment selection scheme for the pre-condenser, the equipment selection scheme for the steam booster and the steam booster condenser, including:

[0045] Obtaining the selected power of the heating network heater equipment according to the difference between the target exhaust steam waste heat heating system total power, the selected power of the pre-condenser equipment, and the selected power of the steam booster condenser equipment in the equipment selection scheme of the steam booster and the steam booster condenser;

[0046] According to the selected power of the heating network heater equipment, an equipment selection scheme for the heating network heater is obtained.

[0047] The present invention also provides an equipment optimization device for an exhaust steam waste heat heating system, comprising:

[0048] An acquisition module is used to obtain basic heating indicators of a target area to which a target exhaust steam waste heat heating system belongs;

[0049] A processing module is used to determine the basic system parameters of the target exhaust steam waste heat heating system based on the basic heating indicators; the basic system parameters include the circulating water volume of the heating network and the total power of the target exhaust steam waste heat heating system; obtain the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, and the steam booster optimization factor; determine the equipment selection scheme of the pre-condenser, the steam booster and the steam booster condenser, and the heating network heater based on the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, the steam booster optimization factor and the system basic parameters; adjust the steam booster optimization factor to obtain multiple optional equipment selection schemes of the pre-condenser, the steam booster and the steam booster condenser, and the heating network heater; determine the target equipment selection scheme from the multiple optional equipment selection schemes based on the steam booster optimization factor.

[0050] The present invention also provides a computing device, comprising: a processor and a memory storing a computer program, wherein the computer program executes the above method when executed by the processor.

[0051] The above solution of the present invention includes at least the following beneficial effects:

[0052] The above-mentioned solution of the present invention obtains basic heating indicators for the target area to which the target exhaust steam waste heat heating system belongs; determines basic system parameters of the target exhaust steam waste heat heating system based on the basic heating indicators; the basic system parameters include the heat network circulating water volume and the total power of the target exhaust steam waste heat heating system; obtains system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, as well as the steam booster optimization factor; determines equipment selection options for the pre-condenser, steam booster, steam booster condenser, and heat network heater based on the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, the steam booster optimization factor, and the basic system parameters; adjusts the steam booster optimization factor to obtain multiple optional equipment selection options for the pre-condenser, steam booster, steam booster condenser, and heat network heater; and determines a target equipment selection option from the multiple optional equipment selection options based on the steam booster optimization factor. This can optimize the design and equipment selection of the exhaust steam waste heat heating system and improve the thermal efficiency of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 1 is a flow chart of an equipment optimization method for an exhaust steam waste heat heating system according to an embodiment of the present invention;

[0054] Figure 2 1 is a schematic structural diagram of an exhaust steam waste heat heating system according to an embodiment of the present invention;

[0055] Figure 3 This is a structural diagram of an equipment optimization device for an exhaust steam waste heat heating system according to an embodiment of the present invention;

[0056] Description of reference numerals:

[0057] 1. Steam turbine intermediate-pressure cylinder; 2. Steam turbine low-pressure cylinder; 3. Unit exhaust device; 4. Pre-condenser; 5. Steam booster; 6. Steam booster condenser; 7. Heating network heater; 8. Exhaust steam pipeline; 9. Power steam pipeline; 10. External heating network circulating water return pipeline; 11. External heating network circulating water supply pipeline. DETAILED DESCRIPTION

[0058] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0059] like Figure 1 As shown, an embodiment of the present invention provides an equipment optimization method for an exhaust steam waste heat heating system, which is applied to a target exhaust steam waste heat heating system. The target exhaust steam waste heat heating system is a three-stage heating system for heating circulating water in a city heating network through a pre-condenser, a steam booster and a steam booster condenser, and a heating network heater, including:

[0060] Step 11, obtaining basic heating indicators of the target area to which the target exhaust steam waste heat heating system belongs;

[0061] Here, the heating basic indicators are determined based on the relevant meteorological data of the target area, the regulatory requirements and the heating contract of the construction unit. The heating basic indicators include: the project heating heat index w, the outdoor heating temperature t w , outdoor calculated temperature t' w , heating indoor design temperature t n , heating duration hours h, and designed urban heating network heating area S data.

[0062] Among them, heating heat index w, unit W / m 2 ;

[0063] Outdoor heating temperature t w , unit ℃;

[0064] Calculated outdoor temperature t' w , unit ℃;

[0065] Heating indoor design temperature t n , unit ℃;

[0066] Duration hours h, unit: hours (h);

[0067] Design the heating area S of the urban heating network, in ten thousand square meters;

[0068] Step 12: determining basic system parameters of the target exhaust steam waste heat heating system based on the basic heating indicators; the basic system parameters include the amount of circulating water in the heating network and the total power of the target exhaust steam waste heat heating system;

[0069] Step 13, obtaining system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, as well as the steam booster optimization factor;

[0070] Step 14, determining the equipment selection scheme for the pre-condenser, the steam booster, the steam booster condenser, and the heating network heater based on the system operating parameters of the pre-condenser and the steam turbine low-pressure cylinder, the steam booster optimization factor, and the basic system parameters;

[0071] Step 15, adjusting the steam booster optimization factor to obtain multiple optional equipment selection schemes for pre-condenser, steam booster, steam booster condenser, and heating network heater;

[0072] Step 16: Determine a target equipment selection scheme from a plurality of optional equipment selection schemes based on the steam booster optimization factor.

[0073] In this embodiment, the structure of the exhaust steam waste heat heating system is as follows: Figure 2 As shown, this is a three-stage heating system that heats the city's heat network circulating water via a pre-condenser 4, a steam booster condenser 6, and a heat network heater 7. Water flowing from the external heat network's circulating water return pipe into the exhaust steam waste heat heating system passes through the pre-condenser 4, the steam booster condenser 6, and the heat network heater 7 before exiting the system through the external heat network's circulating water supply pipe to provide heating for the city.

[0074] The pre-condenser 4 is the first stage of heating. During the cold period at the beginning and end of the heating season, when the heating load is low, only the pre-condenser 4 can meet the city heating network demand. In this case, the heat source is the exhaust steam from the low-pressure cylinder 2 of the steam turbine.

[0075] Booster turbine 5 and condenser 6 are used for the second stage of heating. As the outdoor temperature drops, the heating load gradually increases, and the inlet and outlet heating temperatures need to be raised. The pre-condenser 4, booster turbine 5, and condenser 6 are operated simultaneously. The heat source is the exhaust steam from the low-pressure cylinder 2 of the steam turbine.

[0076] Heating network heater 7 is the third stage of heating. When the outdoor ambient temperature reaches its coldest point and the heating period enters its peak cold phase, the heating load demand is at its highest, and the inlet and outlet heating temperatures need to be the highest. Pre-condenser 4, steam booster 5, steam booster condenser 6, and heating network heater 7 are all in operation simultaneously. The heat sources at this stage are exhaust steam from the low-pressure cylinder 2 of the steam turbine and steam extraction from the regulating stage of the intermediate-pressure cylinder 1 of the steam turbine.

[0077] Exhaust steam from the turbine's low-pressure cylinder 2 enters the unit's exhaust system 3 and, via the exhaust steam outlet pipe, enters the exhaust steam pipeline 8. A portion of the exhaust steam in the exhaust steam pipeline 8 enters the pre-condenser 4, where it is used to heat the circulating water. Another portion enters the steam booster 5, where it is heated and pressurized, and then passes the high-temperature, high-pressure exhaust steam into the booster condenser 6, where it is used to heat the circulating water. A portion of the regulating stage extraction steam from the turbine's intermediate-pressure cylinder 1 enters the steam booster 5 via the power steam pipeline 9 to increase the temperature and pressure of the exhaust steam. Another portion enters the heat network heater 7, where it is used to heat the circulating water.

[0078] In this embodiment, during the optimization and selection process for the target exhaust steam waste heat heating system, the basic heating indicators for the target area to which the target exhaust steam waste heat heating system belongs are first determined. Based on these basic heating indicators, the overall heating function of the target exhaust steam waste heat heating system is calculated to obtain the heat network circulating water volume Gs and the target exhaust steam waste heat heating system total power Wz. Based on the obtained heat network circulating water volume Gs and target exhaust steam waste heat heating system total power Wz, as well as certain system operating parameters for the pre-condenser, steam booster, steam booster condenser, and steam turbine low-pressure cylinder, a system optimization and selection calculation is performed to obtain equipment selection schemes for the pre-condenser, steam booster, steam booster condenser, and heat network heater. In these equipment selection schemes, the steam booster optimization factor is initially assigned a value. Based on the actual technical and economic conditions of the equipment, the value of the steam booster optimization factor is adjusted within a reasonable range, resulting in multiple optional equipment selection schemes for the pre-condenser, steam booster, steam booster condenser, and heat network heater. Finally, based on the actual project situation, the support of the factory and manufacturer for the equipment, and the technical and economic feasibility of the steam turbine optimization factor, the specific value of the steam turbine optimization factor is determined, and then the target equipment selection plan corresponding to the optimization factor is obtained.

[0079] The equipment optimization method for the exhaust steam waste heat heating system of this embodiment can be directly applied to the system design optimization, main equipment selection parameter determination and system construction cost optimization of the exhaust steam waste heat heating system of the thermal power generation unit heating project. It fills the gap in the field of optimization design of exhaust steam waste heat heating systems. In addition to being applicable to new projects, this optimization design method and its calculation formula can also be applied to the renovation and upgrading of projects that have been put into production. It promotes the optimization of the design and equipment selection of exhaust steam waste heat heating systems, reduces the cost during the construction period, improves the system operation efficiency during the operation period, and thus reduces the loss of cold source, improves the thermal efficiency of the unit, and reduces the waste of non-renewable energy fuel and pollutant emissions.

[0080] In an optional embodiment of the present invention, step 12 may include:

[0081] Step 121, determining the heating load of the target exhaust steam waste heat heating system according to the basic heating index;

[0082] Here, the corresponding outdoor calculation temperature t' is determined respectively w Heating load

[0083] and the heating load corresponding to the outdoor heating temperature w

[0084] Among them: heating heat load W1 and W2, unit GJ / h, W1 and W2 are represented by W when they need to be included in subsequent formula calculation methods.

[0085] Step 122, obtaining the supply and return water temperature difference of the heating network of the target exhaust steam waste heat heating system under the climate environment of the target area;

[0086] Here, the target area corresponds to the outdoor heating temperature w and the outdoor calculation temperature t' w The heating network water supply temperature t g and return water temperature t h , calculate the supply and return water temperature difference Δt of the heating network;

[0087] Heating network supply and return water temperature difference Δt=t g -t h , where t g and t h The unit is ℃.

[0088] Step 123 : determining basic system parameters of the target exhaust steam waste heat heating system according to the heating heat load and the supply and return water temperature difference of the heating network.

[0089] Here, the basic system parameters include the heat network circulating water volume Gs and the target exhaust steam waste heat heating system total power Wz, where the heat network circulating water volume Gs is measured in t / h. Because the value of W2 in the exhaust steam waste heat heating system varies with the outdoor heating temperature, the circulating water volume in the heating network also changes. Heating systems should be selected based on the maximum circulating water volume. Here, W1 and W2 are calculated based on the outdoor temperature, and the maximum circulating water volume corresponding to W1 and W2 is used for system equipment selection.

[0090] Target exhaust steam waste heat heating system total power W z Unit: MW.

[0091] In an optional embodiment of the present invention, step 14 may include:

[0092] Step 141: Determine an equipment selection scheme for the pre-condenser based on the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, as well as the basic system parameters; the equipment selection scheme for the pre-condenser includes the exhaust steam consumption of the pre-condenser and the equipment selection power of the pre-condenser;

[0093] Here, the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine include: corresponding to the outdoor heating temperature t w , outdoor calculated temperature t' w Pre-condenser circulating water outlet temperature t qz , pre-condenser drain enthalpy H qzss , Steam turbine low pressure cylinder exhaust back pressure P by , exhaust enthalpy of low-pressure cylinder of steam turbine H pq .in:

[0094] Pre-condenser circulating water outlet temperature t qz , unit ℃;

[0095] Pre-condenser drain enthalpy H qzss , unit kJ / kg;

[0096] Steam turbine low pressure cylinder exhaust back pressure P by , unit kPa;

[0097] Steam turbine low pressure cylinder exhaust enthalpy g pq , unit kJ / kg;

[0098] The equipment selection scheme of the pre-condenser mainly includes determining the exhaust steam consumption G of the pre-condenser. qfq And the pre-condenser equipment selection power W qz .

[0099] Step 142: Determine an initial equipment selection plan for the steam booster and the steam booster condenser based on the steam booster optimization factor; the initial equipment selection plan for the steam booster and the steam booster condenser includes: steam booster condenser back pressure, steam booster outlet mixed steam consumption, exhaust steam consumption in the steam booster condenser mixed steam, and steam consumption of the steam booster after water spraying and desuperheating.

[0100] Here, the steam booster optimization factor includes the steam booster pressure optimization factor δ zqjsy and the steam booster induction optimization factor δ zqjya The booster pressure optimization factor δ zqjsy It is a dimensionless parameter with a value range of 1.5-1.8, which is determined according to the boost ratio of the steam turbine equipment. zqjyq It is a dimensionless parameter with a value range of 0.4-0.6, and is determined based on the steam induction ratio of the steam booster equipment.

[0101] Step 143, determining the amount of unused exhaust steam in the initial equipment selection plan for the steam booster and the steam booster condenser;

[0102] The unused exhaust steam amount is equal to the total available exhaust steam amount minus the used exhaust steam amount. The used exhaust steam amount includes the sum of the exhaust steam used by the steam booster in the initial equipment selection plan for the steam booster and the steam booster condenser, and the exhaust steam used by the pre-condenser in the equipment selection plan for the pre-condenser. The exhaust steam used by the steam booster is adjustable.

[0103] Step 144, modifying the initial equipment selection plan based on the unused exhaust steam amount to obtain an equipment selection plan for the steam booster and the steam booster condenser;

[0104] Here, the amount of exhaust steam that should be used by the steam booster is calculated based on the unused exhaust steam, and the revised equipment selection plan is obtained, thereby making the unused exhaust steam amount close to 0.

[0105] Step 145 : Obtaining an equipment selection plan for the heating network heater according to the equipment selection plan for the pre-condenser, the equipment selection plan for the steam booster, and the equipment selection plan for the steam booster condenser.

[0106] In an optional embodiment of the present invention, step 141 may include:

[0107] Step 1411: Determine the exhaust steam consumption of the pre-condenser and the selected power of the pre-condenser equipment based on the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, as well as the basic system parameters; the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine include: the circulating water outlet temperature of the pre-condenser, the water enthalpy value of the pre-condenser, the exhaust back pressure of the low-pressure cylinder of the steam turbine, and the exhaust enthalpy value of the low-pressure cylinder of the steam turbine;

[0108] The exhaust steam consumption of the pre-condenser

[0109] The power of the pre-condenser equipment

[0110] Step 1412: Obtain an equipment selection plan for the pre-condenser based on the exhaust steam usage of the pre-condenser and the equipment selection power of the pre-condenser.

[0111] In an optional embodiment of the present invention, step 142 may include:

[0112] Step 1421, determining the back pressure of the steam booster condenser according to the steam booster pressure optimization factor in the steam booster optimization factor;

[0113] Based on the exhaust back pressure P of the low pressure cylinder of the steam turbine by and the steam turbine boost optimization factor δ zqjsy , calculate the booster condenser back pressure P zqj =P by ×δ zqjsy , where P zqjUnit: kPa.

[0114] Step 1422, obtaining the exhaust enthalpy value of the steam booster and the drain enthalpy value of the condenser of the steam booster;

[0115] According to the heat balance diagram data, determine the exhaust enthalpy value H of the steam booster zqj and the steam booster condenser drain enthalpy H zqjss , unit is kJ / kg.

[0116] Step 1423, obtaining the mixed steam usage at the steam booster outlet according to the steam booster exhaust enthalpy and the steam booster condenser drain enthalpy;

[0117] Mixed steam consumption at steam booster outlet

[0118] where t zqj It is the outlet temperature of circulating water of the condenser of the steam turbine, determined according to the heat balance diagram data and the technical agreement of the steam turbine.

[0119] Mixed steam consumption at the steam booster outlet G zqjq Unit: t / h. It is composed of steam from the booster turbine and exhaust steam from the turbine. The motive steam is used to raise the temperature and pressure of the turbine exhaust steam, thereby increasing the temperature of the circulating water in the heat network. The motive steam is extracted from the intermediate pressure cylinder of the turbine.

[0120] Step 1424, obtaining the exhaust steam usage in the mixed steam of the steam booster condenser according to the steam booster induction steam optimization factor and the mixed steam usage at the steam booster outlet in the steam booster optimization factor;

[0121] Exhaust steam consumption in the mixed steam of the steam booster condenser G zqjfq =G zqjq ×δ zqjyq , where G zqjfq Unit: t / h.

[0122] Step 1425, obtaining the motive steam consumption of the steam booster after water spraying and temperature reduction based on the difference between the consumption of the mixed steam at the steam booster outlet and the consumption of the exhaust steam in the mixed steam of the steam booster condenser;

[0123] Power steam consumption after water spraying and cooling of the steam booster G zqjdl =G zqjq -G zqjfq .

[0124] Step 1426: Obtain an initial equipment selection plan for the steam booster and steam booster condenser based on the steam booster condenser back pressure, the steam booster outlet mixed steam consumption, the exhaust steam consumption in the steam booster condenser mixed steam, and the power steam consumption after water spraying and desuperheating of the steam booster.

[0125] In an optional embodiment of the present invention, step 143 may include:

[0126] Step 1431: Obtain the total available exhaust steam of the thermal power plant according to the heat balance diagram of the target exhaust steam waste heat heating system;

[0127] Step 1432: Obtain the used exhaust steam amount in the initial equipment selection solution based on the sum of the exhaust steam amount of the pre-condenser and the exhaust steam amount in the mixed steam of the booster condenser;

[0128] Used exhaust steam G yy =G qzfq +G zqjfq , where G qzfq is the exhaust steam consumption of the pre-condenser, G zqjfq G is the exhaust steam consumption in the mixed steam of the booster condenser. yy Unit: t / h.

[0129] Step 1433 : Obtain the unused exhaust steam amount in the initial equipment selection plan for the steam booster and the steam booster condenser based on the difference between the total available exhaust steam amount and the used exhaust steam amount of the thermal power plant.

[0130] Unused exhaust steam G wly =G z f q -G yy , where G zfq is the total amount of exhaust steam available in thermal power plants. For newly built units, G wly The formula of the present invention can be used to iteratively optimize the calculation to make it close to 0 and obtain the optimal exhaust steam utilization rate. For the modified unit, the minimum exhaust steam flow rate for winter anti-condensation should be reserved according to the air cooling technology agreement, and the iterative calculation should be made to make G wly Approaching the minimum exhaust steam flow rate for winter anti-condensation, and obtaining the optimal exhaust steam utilization rate.

[0131] In an optional embodiment of the present invention, step 144 may include:

[0132] Step 1441, obtaining a corrected exhaust steam usage in the booster condenser mixed steam based on the sum of the unused exhaust steam usage and the used exhaust steam usage in the initial equipment selection plan;

[0133] Correction of exhaust steam consumption G' in mixed steam of booster condenser zqjfq =G zajfq +G wly .

[0134] Step 1442, based on the steam booster induction optimization factor and the exhaust steam usage in the steam booster condenser mixed steam, obtain the corrected steam usage after water spraying and desuperheating of the steam booster;

[0135] Correction of steam consumption after water injection and cooling of steam turbine

[0136] Step 1443, obtaining a corrected booster outlet mixed steam consumption based on the sum of the corrected exhaust steam consumption in the booster condenser mixed steam and the corrected booster motive steam consumption after water spraying and desuperheating;

[0137] Corrected steam consumption of mixed steam at the outlet of the steam booster G' zqjq =G' zqjdl +G' zqifq .

[0138] Step 1444, determining the selected power of the condenser equipment of the steam booster according to the corrected mixed steam usage at the steam booster outlet;

[0139] Booster condenser equipment selection power

[0140] Step 1445, obtain the equipment selection plan for the steam booster and the steam booster condenser based on the steam booster condenser back pressure, the steam booster condenser equipment selection power, the amount of exhaust steam in the steam booster condenser mixed steam, the amount of power steam after water spray cooling of the steam booster, and the amount of mixed steam at the steam booster outlet.

[0141] In an optional embodiment of the present invention, step 145 may include:

[0142] Step 1451: Obtain the selected power of the heating network heater according to the difference between the target total power of the exhaust steam waste heat heating system and the selected power of the pre-condenser and the selected power of the booster condenser in the equipment selection scheme for the booster and booster condenser.

[0143] Heating network heater equipment selection power W rw =W z -W qz -W zqj .

[0144] Step 1452: Obtain a device selection plan for the heating network heater according to the selected power of the heating network heater.

[0145] The equipment optimization method of the exhaust steam waste heat heating system of the above embodiment of the present invention is based on the thermal balance diagram and the boundary data provided by the relevant equipment technical agreement. wly Keep as close as possible to the minimum required values ​​to improve system exhaust steam utilization and thermal efficiency. During the iterative process, collaborate with equipment manufacturers to adjust various optimization factor parameters. The final determinations of flow, temperature, pressure, and power can serve as selection parameters for the pre-condenser, steam booster, and steam booster condenser. They can also serve as selection parameters for piping, key components, and components in major systems such as the exhaust steam system, extraction steam system, power steam system, and desuperheating water system.

[0146] The optimization design method, calculation formula, and optimization factor proposed in the present invention optimize the overall system functions and target parameters of the exhaust steam waste heat heating system to obtain the optimal heating capacity of the system; calculate the equipment parameters to obtain optimization results that can be directly used for equipment procurement and use; optimize the pipes and fittings of the above-mentioned system to obtain the optimal settings of the system; verify the selected parameters of the equipment in each part of the system to verify whether the equipment linkage matching degree and equipment selection meet the requirements of the optimal heating capacity of the system.

[0147] like Figure 3 As shown, an embodiment of the present invention further provides an equipment optimization device 30 for an exhaust steam waste heat heating system, comprising:

[0148] An acquisition module 31 is used to obtain basic heating indicators of a target area to which a target exhaust steam waste heat heating system belongs;

[0149] The processing module 32 is used to determine the basic system parameters of the target exhaust steam waste heat heating system based on the basic heating indicators; the basic system parameters include the circulating water volume of the heat network and the total power of the target exhaust steam waste heat heating system; obtain the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, and the steam booster optimization factor; determine the equipment selection scheme of the pre-condenser, the steam booster and the steam booster condenser, and the heat network heater based on the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, the steam booster optimization factor and the system basic parameters; adjust the steam booster optimization factor to obtain multiple optional equipment selection schemes of the pre-condenser, the steam booster and the steam booster condenser, and the heat network heater; determine the target equipment selection scheme from the multiple optional equipment selection schemes based on the steam booster optimization factor.

[0150] Optionally, based on the basic heating indicators, basic system parameters of the target exhaust steam waste heat heating system are determined, including:

[0151] Determining the heating load of the target exhaust steam waste heat heating system based on the basic heating indicators;

[0152] Obtain the supply and return water temperature difference of the heat network of the target exhaust steam waste heat heating system under the climate environment of the target area;

[0153] The basic system parameters of the target exhaust steam waste heat heating system are determined based on the heating heat load and the supply and return water temperature difference of the heating network.

[0154] Optionally, based on the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, the steam booster optimization factor and the basic system parameters, the equipment selection scheme for the pre-condenser, the steam booster, the steam booster condenser and the heating network heater is determined, including:

[0155] Determine the equipment selection scheme for the pre-condenser according to the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, as well as the basic system parameters; the equipment selection scheme for the pre-condenser includes the exhaust steam consumption of the pre-condenser and the equipment selection power of the pre-condenser;

[0156] Determining an initial equipment selection plan for the steam booster and the steam booster condenser based on the steam booster optimization factor; the initial equipment selection plan for the steam booster and the steam booster condenser includes: steam booster condenser back pressure, steam booster outlet mixed steam consumption, exhaust steam consumption in the steam booster condenser mixed steam, and steam consumption of the steam booster after water spraying and desuperheating;

[0157] Determining the amount of unused exhaust steam in the initial equipment selection plan for the steam booster and steam booster condenser;

[0158] Modifying the initial equipment selection plan according to the unused exhaust steam amount to obtain an equipment selection plan for a steam booster and a steam booster condenser;

[0159] According to the equipment selection scheme of the pre-condenser, the equipment selection scheme of the steam booster and the steam booster condenser, the equipment selection scheme of the heating network heater is obtained.

[0160] Optionally, based on the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, as well as the basic system parameters, an equipment selection scheme for the pre-condenser is determined, including:

[0161] Determine the exhaust steam consumption of the pre-condenser and the selected power of the pre-condenser equipment according to the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, as well as the basic system parameters; the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine include: the circulating water outlet temperature of the pre-condenser, the water enthalpy value of the pre-condenser, the exhaust back pressure of the low-pressure cylinder of the steam turbine, and the exhaust enthalpy value of the low-pressure cylinder of the steam turbine;

[0162] According to the exhaust steam consumption of the pre-condenser and the equipment selection power of the pre-condenser, an equipment selection scheme for the pre-condenser is obtained.

[0163] Optionally, determining an initial equipment selection plan for the steam booster and the steam booster condenser based on the steam booster optimization factor includes:

[0164] determining the back pressure of the steam booster condenser according to the steam booster pressure optimization factor in the steam booster optimization factor;

[0165] Obtain the exhaust enthalpy value of the steam booster and the drain enthalpy value of the steam booster condenser;

[0166] According to the exhaust enthalpy value of the steam booster and the drain enthalpy value of the condenser of the steam booster, the mixed steam consumption at the outlet of the steam booster is obtained;

[0167] According to the steam booster induction steam optimization factor and the steam booster outlet mixed steam usage in the steam booster optimization factor, the exhaust steam usage in the steam booster condenser mixed steam is obtained;

[0168] The power steam consumption of the steam booster after water spraying and temperature reduction is obtained according to the difference between the consumption of the mixed steam at the outlet of the steam booster and the consumption of the exhaust steam in the mixed steam of the steam booster condenser;

[0169] An initial equipment selection plan for the steam booster and steam booster condenser is obtained based on the steam booster condenser back pressure, the steam booster outlet mixed steam consumption, the exhaust steam consumption in the steam booster condenser mixed steam and the power steam consumption after water spraying and temperature reduction of the steam booster.

[0170] Optionally, determining the amount of unused exhaust steam in the initial equipment selection plan for the steam booster and the steam booster condenser includes:

[0171] Obtaining the total available amount of exhaust steam from the thermal power plant based on a heat balance diagram of the target exhaust steam waste heat heating system;

[0172] Obtaining the used exhaust steam amount in the initial equipment selection scheme according to the sum of the exhaust steam amount of the pre-condenser and the exhaust steam amount in the mixed steam of the steam booster condenser;

[0173] The unused exhaust steam amount in the initial equipment selection scheme of the steam booster and the steam booster condenser is obtained according to the difference between the total available exhaust steam amount and the used exhaust steam amount of the thermal power plant.

[0174] Optionally, the initial equipment selection scheme is modified according to the unused exhaust steam amount to obtain an equipment selection scheme for a steam booster and a steam booster condenser, including:

[0175] According to the sum of the unused exhaust steam amount and the used exhaust steam amount in the initial equipment selection plan, the exhaust steam amount in the mixed steam of the steam booster condenser is corrected;

[0176] According to the steam booster induction optimization factor and the exhaust steam usage in the steam booster condenser mixed steam, the power steam usage after water spraying and desuperheating of the booster is obtained.

[0177] According to the sum of the exhaust steam consumption in the steam mixture of the steam booster condenser and the power steam consumption after the steam booster water spraying and desuperheating, the steam mixture consumption at the outlet of the steam booster is corrected;

[0178] Determine the selected power of the condenser equipment of the steam booster according to the modified mixed steam consumption at the outlet of the steam booster;

[0179] According to the booster condenser back pressure, the booster condenser equipment selection power, the amount of exhaust steam in the corrected booster condenser mixed steam, the amount of motive steam after corrected booster water spray cooling, and the amount of corrected booster outlet mixed steam, an equipment selection plan for the booster and the booster condenser is obtained.

[0180] Optionally, the equipment selection scheme for the heating network heater is obtained based on the equipment selection scheme for the pre-condenser, the equipment selection scheme for the steam booster and the steam booster condenser, including:

[0181] Obtaining the selected power of the heating network heater equipment according to the difference between the target exhaust steam waste heat heating system total power, the selected power of the pre-condenser equipment, and the selected power of the steam booster condenser equipment in the equipment selection scheme of the steam booster and the steam booster condenser;

[0182] According to the selected power of the heating network heater equipment, an equipment selection scheme for the heating network heater is obtained.

[0183] It should be noted that the device is a device corresponding to the above method, and all implementation methods in the above method embodiments are applicable to the embodiments of the device and can achieve the same technical effects.

[0184] An embodiment of the present invention further provides a computing device comprising: a processor and a memory storing a computer program, wherein the computer program, when executed by the processor, performs the above-described method. All implementations in the above-described method embodiments are applicable to this embodiment and can achieve the same technical effects.

[0185] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.

[0186] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0187] In the embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interface, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0188] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0189] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0190] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program code, such as a USB flash drive, a mobile hard drive, ROM, RAM, a magnetic disk, or an optical disk.

[0191] In addition, it should be noted that, in the apparatus and method of the present invention, it is obvious that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present invention. Moreover, the steps of performing the above-mentioned series of processing can naturally be performed in chronological order according to the order of description, but it is not necessary to perform them in chronological order, and some steps can be performed in parallel or independently of each other. For those of ordinary skill in the art, it will be understood that all or any steps or components of the method and apparatus of the present invention can be implemented in any computing device (including processors, storage media, etc.) or a network of computing devices in hardware, firmware, software or a combination thereof, which can be achieved by those of ordinary skill in the art using their basic programming skills after reading the description of the present invention.

[0192] Therefore, the purpose of the present invention can also be achieved by running a program or a group of programs on any computing device. The computing device can be a well-known general-purpose device. Therefore, the purpose of the present invention can also be achieved simply by providing a program product containing program code that implements the method or device. That is to say, such a program product also constitutes the present invention, and the storage medium storing such a program product also constitutes the present invention. Obviously, the storage medium can be any well-known storage medium or any storage medium developed in the future. It should also be pointed out that in the device and method of the present invention, it is obvious that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present invention. In addition, the steps of performing the above-mentioned series of processing can naturally be performed in chronological order according to the order of description, but do not necessarily need to be performed in chronological order. Certain steps can be performed in parallel or independently of each other.

[0193] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A method for optimizing equipment of an exhaust steam waste heat heating system, characterized in that: Applied to the target exhaust steam waste heat heating system, the target exhaust steam waste heat heating system is a three-stage heating system that heats the city heating network circulating water through a pre-condenser, a steam booster and steam booster condenser, and a heating network heater, including: Obtain basic heating indicators for the target area of ​​the target exhaust steam waste heat heating system; Determine the basic system parameters of the target exhaust steam waste heat heating system based on the basic heating indicators; the basic system parameters include the circulating water volume of the heating network and the total power of the target exhaust steam waste heat heating system; Obtain system operating parameters of the pre-condenser and turbine low-pressure cylinder, as well as the steam booster optimization factor; Determine the equipment selection scheme for the pre-condenser, steam booster, steam booster condenser, and heating network heater based on the system operating parameters of the pre-condenser and steam turbine low-pressure cylinder, the steam booster optimization factor, and the basic system parameters; Adjusting the steam booster optimization factor to obtain multiple optional equipment selection schemes for pre-condensers, steam boosters, steam booster condensers, and heating network heaters; Determine the specific value of the steam turbine optimization factor based on the actual project situation, the factory and manufacturer's support for the equipment, and the technical and economic feasibility of the steam turbine optimization factor. Based on the specific value of the steam turbine optimization factor, determine the target equipment selection scheme from multiple optional equipment selection schemes. The equipment selection scheme for the pre-condenser, steam booster, steam booster condenser, and heating network heater is determined based on the system operating parameters of the pre-condenser and steam turbine low-pressure cylinder, the steam booster optimization factor, and the basic system parameters, including: Determine the equipment selection scheme for the pre-condenser according to the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, as well as the basic system parameters; the equipment selection scheme for the pre-condenser includes the exhaust steam consumption of the pre-condenser and the equipment selection power of the pre-condenser; Determining an initial equipment selection plan for the steam booster and the steam booster condenser based on the steam booster optimization factor; the initial equipment selection plan for the steam booster and the steam booster condenser includes: steam booster condenser back pressure, steam booster outlet mixed steam consumption, exhaust steam consumption in the steam booster condenser mixed steam, and steam consumption of the steam booster after water spraying and desuperheating; Determining the amount of unused exhaust steam in the initial equipment selection plan for the steam booster and steam booster condenser; Modifying the initial equipment selection plan according to the unused exhaust steam amount to obtain an equipment selection plan for a steam booster and a steam booster condenser; According to the equipment selection scheme of the pre-condenser, the equipment selection scheme of the steam booster and the steam booster condenser, the equipment selection scheme of the heating network heater is obtained.

2. The equipment optimization method of the exhaust steam waste heat heating system according to claim 1 is characterized in that: Based on the basic heating indicators, determine the basic system parameters of the target exhaust steam waste heat heating system, including: Determining the heating load of the target exhaust steam waste heat heating system based on the basic heating indicators; Obtain the supply and return water temperature difference of the heat network of the target exhaust steam waste heat heating system under the climate environment of the target area; The basic system parameters of the target exhaust steam waste heat heating system are determined based on the heating heat load and the supply and return water temperature difference of the heating network.

3. The equipment optimization method of the exhaust steam waste heat heating system according to claim 1 is characterized in that: Based on the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, as well as the basic system parameters, the equipment selection scheme for the pre-condenser is determined, including: Determine the exhaust steam consumption of the pre-condenser and the selected power of the pre-condenser equipment based on the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, as well as the basic system parameters; the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine include: the circulating water outlet temperature of the pre-condenser, the water enthalpy value of the pre-condenser, the exhaust back pressure of the low-pressure cylinder of the steam turbine, and the exhaust enthalpy value of the low-pressure cylinder of the steam turbine; According to the exhaust steam consumption of the pre-condenser and the equipment selection power of the pre-condenser, an equipment selection scheme for the pre-condenser is obtained.

4. The equipment optimization method of the exhaust steam waste heat heating system according to claim 1 is characterized in that: Based on the steam booster optimization factors, determine the initial equipment selection plan for the steam booster and steam booster condenser, including: determining the back pressure of the steam booster condenser according to the steam booster pressure optimization factor in the steam booster optimization factor; Obtain the exhaust enthalpy value of the steam booster and the drain enthalpy value of the steam booster condenser; According to the exhaust enthalpy value of the steam booster and the drain enthalpy value of the condenser of the steam booster, the mixed steam consumption at the outlet of the steam booster is obtained; According to the steam booster induction steam optimization factor and the steam booster outlet mixed steam usage in the steam booster optimization factor, the exhaust steam usage in the steam booster condenser mixed steam is obtained; The power steam consumption of the steam booster after water spraying and temperature reduction is obtained according to the difference between the consumption of the mixed steam at the outlet of the steam booster and the consumption of the exhaust steam in the mixed steam of the steam booster condenser; According to the booster condenser back pressure, booster outlet mixed steam consumption, booster condenser mixed The exhaust steam consumption in the steam generator and the motive steam consumption after water spraying and desuperheating of the booster turbine are used to obtain the initial equipment selection plan for the booster turbine and the booster turbine condenser.

5. The equipment optimization method for the exhaust steam waste heat heating system according to claim 1 is characterized in that: Determine the unused exhaust steam capacity in the initial equipment selection plan for the steam booster and steam booster condenser, including: Obtaining the total available amount of exhaust steam from the thermal power plant based on a heat balance diagram of the target exhaust steam waste heat heating system; Obtaining the used exhaust steam amount in the initial equipment selection solution based on the sum of the exhaust steam amount of the pre-condenser and the exhaust steam amount in the mixed steam of the steam booster condenser; The unused exhaust steam amount in the initial equipment selection scheme of the steam booster and the steam booster condenser is obtained according to the difference between the total available exhaust steam amount and the used exhaust steam amount of the thermal power plant.

6. The equipment optimization method for the exhaust steam waste heat heating system according to claim 1 is characterized in that: The initial equipment selection plan is modified according to the unused exhaust steam amount to obtain an equipment selection plan for a steam booster and a steam booster condenser, including: According to the sum of the unused exhaust steam amount and the used exhaust steam amount in the initial equipment selection plan, the exhaust steam amount in the mixed steam of the steam booster condenser is corrected; According to the steam booster induction optimization factor and the exhaust steam usage in the steam booster condenser mixed steam, the power steam usage after water spraying and desuperheating of the booster is obtained. According to the sum of the exhaust steam consumption in the steam mixture of the steam booster condenser and the power steam consumption after the steam booster water spraying and temperature reduction, the steam mixture consumption at the outlet of the steam booster is corrected; Determine the selected power of the condenser equipment of the steam booster according to the modified mixed steam consumption at the outlet of the steam booster; According to the booster condenser back pressure, the booster condenser equipment selection power, the amount of exhaust steam in the corrected booster condenser mixed steam, the amount of motive steam after corrected booster water spray cooling, and the amount of corrected booster outlet mixed steam, an equipment selection plan for the booster and the booster condenser is obtained.

7. The equipment optimization method for the exhaust steam waste heat heating system according to claim 1 is characterized in that: According to the equipment selection scheme of the pre-condenser, the equipment selection scheme of the steam booster and the steam booster condenser, the equipment selection scheme of the heating network heater is obtained, including: Obtaining the selected power of the heating network heater equipment according to the difference between the target exhaust steam waste heat heating system total power, the selected power of the pre-condenser equipment, and the selected power of the steam booster condenser equipment in the equipment selection scheme of the steam booster and the steam booster condenser; According to the selected power of the heating network heater equipment, an equipment selection scheme for the heating network heater is obtained.

8. An equipment optimization device for an exhaust steam waste heat heating system, characterized in that: include: An acquisition module is used to obtain basic heating indicators of a target area to which a target exhaust steam waste heat heating system belongs; a processing module, configured to determine basic system parameters of a target exhaust steam waste heat heating system based on the basic heating indicators; the basic system parameters including the amount of circulating water in the heating network and the total power of the target exhaust steam waste heat heating system; Obtain system operating parameters of the pre-condenser and turbine low-pressure cylinder, as well as the steam booster optimization factor; According to the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, the steam booster optimization factor and the basic system parameters, the equipment selection scheme of the pre-condenser, the steam booster and the steam booster condenser, and the heat network heater is determined; the steam booster optimization factor is adjusted to obtain multiple optional equipment selection schemes for the pre-condenser, the steam booster and the steam booster condenser, and the heat network heater; according to the actual project situation, the support of the factory and the manufacturer for the equipment, and the technical and economic feasibility of the steam booster optimization factor, the specific steam booster optimization factor value is determined, and according to the specific steam booster optimization factor value, the target equipment selection scheme is determined from multiple optional equipment selection schemes; wherein, according to the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, the steam booster optimization factor and the basic system parameters, the pre-condenser is determined The equipment selection scheme for the pre-condenser, the steam booster and the steam booster condenser, and the heat network heater includes: determining the equipment selection scheme for the pre-condenser according to the system operating parameters of the pre-condenser and the low-pressure cylinder of the steam turbine, as well as the basic system parameters; the equipment selection scheme for the pre-condenser includes the exhaust steam consumption of the pre-condenser and the equipment selection power of the pre-condenser; determining the initial equipment selection scheme for the steam booster and the steam booster condenser according to the steam booster optimization factor; the initial equipment selection scheme for the steam booster and the steam booster condenser includes: the back pressure of the steam booster condenser, the mixed steam consumption at the outlet of the steam booster, the exhaust steam consumption in the mixed steam of the steam booster condenser, and the power steam consumption after water desuperheating of the steam booster; determining the unused exhaust steam consumption in the initial equipment selection scheme for the steam booster and the steam booster condenser; The initial equipment selection plan is modified according to the unused exhaust steam volume to obtain an equipment selection plan for the steam booster and the steam booster condenser; and the equipment selection plan for the heat network heater is obtained according to the equipment selection plan for the pre-condenser, the equipment selection plan for the steam booster and the steam booster condenser.

9. A computing device, characterized in that include: A processor and a memory storing a computer program, wherein when the computer program is executed by the processor, the method according to any one of claims 1 to 7 is performed.

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