Segmented heat storage type steam pocket superheated steam injection device and method

Abstract

The invention relates to the technical field of superheated steam injection devices for oil fields, in particular to a segmented heat storage type steam drum superheated steam injection device and method.The device comprises a steam drum boiler barrel assembly, and the upper end of the steam drum boiler barrel assembly is connected with a valley electricity superheated heat exchanger system and a wind electricity superheated heat exchanger system; the lower end of the steam drum boiler barrel assembly is connected with a wind power preheating heat exchanger system, a wind power evaporation heat exchanger system and a valley electricity evaporation heat exchanger system, and the wind power preheating heat exchanger system, the wind power evaporation heat exchanger system and the valley electricity evaporation heat exchanger system are all connected with a heat exchange section cooling water return port and a heat exchange section cooling water inlet port. The valley electricity overheating heat exchanger system and the wind electricity overheating heat exchanger system are both connected with an overheating section cooling water return port, an overheating section cooling water inlet port and an overheating section heat exchanger fixed drainage port. According to the segmented heat storage type steam pocket superheated steam injection device and method, the new energy adaptability is high, the operation cost is low, all-time pressure stabilization continuity is guaranteed, the production requirement is guaranteed, and safety is high.

Description

Technical Field

[0001] This invention relates to the technical field of superheated steam injection devices for oil fields, and particularly to a segmented thermal storage type steam drum superheated steam injection device and method. Background Technology

[0002] Currently, steam injection equipment in heavy oil fields mainly relies on oilfield steam injection boilers to generate high-pressure superheated steam. Among these, the types of steam injection boilers include oil-fired steam injection boilers, gas-fired steam injection boilers, and coal-fired steam injection boilers. Heating furnaces are mostly used for domestic heating, and among these, the types of heating furnaces include electric heating furnaces and thermal storage heating furnaces.

[0003] In oilfield development, it is mostly used for heat tracing in areas such as well sites. It generally uses low-pressure heating, such as 0.4kV voltage. The steam temperature is low and the pressure is close to atmospheric pressure, so it cannot be directly applied to the oilfield development process system.

[0004] The conventional solution for high-voltage heating is to add a 10kV / 0.4kV transformer and related low-voltage switchgear to the front end of the existing equipment. However, this reduces efficiency after passing through the transformer, requires large-diameter conductors, and results in significant power loss. Therefore, to address these shortcomings, a segmented thermal storage steam drum superheated steam injection device and method are proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a segmented thermal storage steam drum injection superheated steam device and method to overcome the shortcomings of existing oilfield steam injection equipment, such as lack of storage function, poor adaptability to new energy sources, and high operating costs.

[0006] To achieve the above objectives, the present invention provides a segmented thermal storage steam drum injection superheated steam device, comprising: The boiler drum assembly has its upper end connected to both a valley-electricity superheater heat exchanger system and a wind-electricity superheater heat exchanger system, and its lower end connected to both a wind-electricity preheater heat exchanger system, a wind-electricity evaporator heat exchanger system, and a valley-electricity evaporator heat exchanger system. Each of these systems is connected to the return and inlet ports of the cooling water for the heat exchange section. The wind-electricity preheater heat exchanger system is connected to the feedwater inlet via a feedwater pipeline. The upper end of the feedwater pipeline is connected to an exhaust pipeline. One end of the exhaust pipeline is connected to the main steam outlet, and the other end is connected to both the valley-electricity superheater heat exchanger system and the wind-electricity superheater heat exchanger system. Both systems are connected to the return port of the superheater section cooling water, the inlet port of the superheater section cooling water, and the constant drain port of the superheater section heat exchanger.

[0007] Preferably, the boiler drum assembly includes a boiler drum, a continuous drain outlet, a chemical dosing pump inlet, and riser pipes. The chemical dosing pump inlet is provided on one side of the boiler drum. The boiler drum is connected to the continuous drain outlet via a drain pipeline. Multiple riser pipes are connected to the upper end of the boiler drum. The lower end of the boiler drum is connected to a wind power preheating heat exchanger system, a wind power evaporative heat exchanger system, and a valley electricity evaporative heat exchanger system, respectively.

[0008] Preferably, the wind power preheating heat exchanger system includes a wind power preheating heat exchanger and a preheating section heat exchanger fixed drain outlet. The wind power preheating heat exchanger is connected to the water supply pipeline via a connecting pipeline. The wind power preheating heat exchanger is connected to the preheating section heat exchanger fixed drain outlet via a drain pipeline. The wind power preheating heat exchanger is connected to the steam drum via a connecting pipeline. The wind power preheating heat exchanger is connected to the heat exchange section cooling water return outlet and the heat exchange section cooling water inlet via a cooling water pipeline.

[0009] Preferably, the wind-powered evaporative heat exchanger system includes a wind-powered evaporative heat exchanger, a riser pipe, and a downcomer pipe. The riser pipe and downcomer pipe are respectively connected to both sides of the wind-powered evaporative heat exchanger. The wind-powered evaporative heat exchanger is connected to the boiler drum through the downcomer pipe. The riser pipe of the wind-powered evaporative heat exchanger is connected to the riser pipe of the boiler drum through a connecting pipeline. The wind-powered evaporative heat exchanger is connected to the cooling water return port and the cooling water inlet of the heat exchange section through a cooling water pipeline.

[0010] Preferably, the off-peak electricity evaporative heat exchanger system includes multiple off-peak electricity evaporative heat exchanger assemblies, which are independently set up. Each off-peak electricity evaporative heat exchanger assembly includes an off-peak electricity evaporative heat exchanger, a riser pipe, a downcomer pipe, and a fixed drain port of the saturation section heat exchanger. The riser pipe and downcomer pipe are respectively connected to both sides of the off-peak electricity evaporative heat exchanger. The off-peak electricity evaporative heat exchanger is connected to the fixed drain port of the saturation section heat exchanger through a drain pipeline. The off-peak electricity evaporative heat exchanger is connected to the boiler drum through a downcomer pipe. The riser pipe of the off-peak electricity evaporative heat exchanger is connected to the riser pipe of the boiler drum through a connecting pipeline. The off-peak electricity evaporative heat exchanger is connected to the cooling water return port and the cooling water inlet of the heat exchange section through a cooling water pipeline.

[0011] Preferably, the off-peak electricity superheater system includes multiple off-peak electricity superheater heat exchangers, which are connected by connecting pipelines.

[0012] Preferably, the top of the off-peak electricity superheater is connected to the main steam outlet via an exhaust pipeline, the bottom of the off-peak electricity superheater is connected to the superheated section cooling water return port and the superheated section cooling water inlet via a cooling water pipeline, and the bottom of the off-peak electricity superheater is connected to the superheated section heat exchanger fixed drain port via a drain pipeline.

[0013] Preferably, the wind power superheater system includes multiple wind power superheaters, which are connected by connecting pipelines.

[0014] Preferably, the wind power superheater is connected to the main steam outlet via an exhaust pipeline, the bottom end of the wind power superheater is connected to the superheated section cooling water return port and the superheated section cooling water inlet via a cooling water pipeline, and the bottom end of the wind power superheater is connected to the superheated section heat exchanger fixed drain port via a drain pipeline.

[0015] This invention also proposes a method for injecting superheated steam into a segmented thermal storage steam drum, comprising: Deoxygenated water enters the wind power preheating heat exchanger after being pressurized by a high-temperature multi-stage centrifugal pump from the water supply inlet. The outlet temperature of the wind power preheating heat exchanger is adjusted by the wind power evaporative heat exchanger and the off-peak electricity evaporative heat exchanger. Water from the wind power preheating heat exchanger enters the boiler drum and then flows through the downcomer into the wind power evaporating heat exchanger and the off-peak electricity evaporating heat exchanger, respectively. After absorbing heat through their respective risers, the water undergoes steam-water separation inside the boiler drum. The separated steam enters the off-peak electricity superheated heat exchanger and the wind power superheated heat exchanger in sequence for superheating, generating superheated steam. The separated water is repeatedly entered into the wind power evaporative heat exchanger and the off-peak electricity evaporative heat exchanger through the downcomer for circulating heating. The steam, after absorbing and exchanging heat through the riser pipe, is evaporated in the wind power evaporative heat exchanger and the off-peak electricity evaporative heat exchanger respectively. The steam entering from the wind power evaporative heat exchanger and the off-peak electricity evaporative heat exchanger respectively enters their respective wind power superheated heat exchanger and off-peak electricity superheated heat exchanger, and after superheating, it enters the exhaust pipeline.

[0016] The segmented thermal storage steam drum injection superheated steam device and method provided by the present invention have the following beneficial effects: The present invention provides a segmented thermal storage steam drum superheated steam injection device and method. The device is designed with a wind power system and a valley power system. Depending on the site conditions, the two systems can be used independently or in parallel. It has strong adaptability to new energy sources, low operating costs, and can ensure production needs with stable pressure and continuity at all times, with high safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the process of a segmented thermal storage steam drum superheated steam injection device according to an embodiment of the present invention.

[0018] Legend: 1-Feedwater inlet; 2-Wind power preheating heat exchanger; 3-Wind power evaporative heat exchanger; 4-Preheating section heat exchanger fixed drain outlet; 5-Saturation section heat exchanger fixed drain outlet; 6-Heat exchange section cooling water return outlet; 7-Heat exchange section cooling water inlet; 8-Boiler drum continuous drain outlet; 9-Steam drum; 10-Dosing pump liquid inlet; 11-Superheated section cooling water return outlet; 12-Superheated section cooling water inlet; 13-Superheated section heat exchanger fixed drain outlet; 14-Off-peak electricity superheating heat exchanger; 15-Wind power superheating heat exchanger; 16-Main steam outlet; 17-Off-peak electricity evaporative heat exchanger; 18-Rising pipe; 19-Downcomer. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Figure 1 This is a schematic diagram of the process of a segmented thermal storage steam drum superheated steam injection device according to an embodiment of the present invention, as shown below. Figure 1 As shown, the present invention provides a segmented thermal storage steam drum superheated steam injection device, comprising: The boiler drum assembly has its upper end connected to both a valley-electricity superheater heat exchanger system and a wind-electricity superheater heat exchanger system, and its lower end connected to both a wind-electricity preheater heat exchanger system, a wind-electricity evaporator heat exchanger system, and a valley-electricity evaporator heat exchanger system. Each of these systems is connected to the cooling water return port 6 and the cooling water inlet 7 of the heat exchange section. The wind-electricity preheater heat exchanger system is connected to the water inlet 1 via a water supply pipeline. The upper end of the water supply pipeline is connected to an exhaust pipeline. One end of the exhaust pipeline is connected to the main steam outlet 16, and the other end is connected to both the valley-electricity superheater heat exchanger system and the wind-electricity superheater heat exchanger system. Both systems are connected to the cooling water return port 11, the cooling water inlet 12, and the constant drain port 13 of the superheater section heat exchanger.

[0021] In this device, the boiler drum assembly includes a boiler drum 9, a continuous drain outlet 8, a chemical inlet 10 for the dosing pump, and riser pipes 18. The chemical inlet 10 for the dosing pump is located on one side of the boiler drum 9. The boiler drum 9 is connected to the continuous drain outlet 8 through a drain pipeline. Multiple riser pipes 18 are connected to the upper end of the boiler drum 9. The lower end of the boiler drum 9 is connected to the wind power preheating heat exchanger system, the wind power evaporating heat exchanger system, and the off-peak electricity evaporating heat exchanger system, respectively.

[0022] In practical applications, the wind power preheating heat exchanger system includes a wind power preheating heat exchanger 2 and a preheating section heat exchanger fixed drain outlet 4. The wind power preheating heat exchanger 2 is connected to the water supply pipeline via a connecting pipeline. The wind power preheating heat exchanger 2 is connected to the preheating section heat exchanger fixed drain outlet 4 via a drain pipeline. The wind power preheating heat exchanger 2 is connected to the steam drum 9 via a connecting pipeline. The wind power preheating heat exchanger 2 is connected to the heat exchange section cooling water return outlet 6 and the heat exchange section cooling water inlet 7 via a cooling water pipeline.

[0023] In this device, the wind-powered evaporative heat exchanger system includes a wind-powered evaporative heat exchanger 3, a riser pipe 18, and a downcomer pipe 19. The riser pipe 18 and the downcomer pipe 19 are connected to both sides of the wind-powered evaporative heat exchanger 3, respectively. The wind-powered evaporative heat exchanger 3 is connected to the boiler drum 9 through the downcomer pipe 19. The riser pipe 18 of the wind-powered evaporative heat exchanger 3 is connected to the riser pipe 18 of the boiler drum 9 through a connecting pipeline. The wind-powered evaporative heat exchanger 3 is connected to the cooling water return port 6 and the cooling water inlet port 7 of the heat exchange section through a cooling water pipeline.

[0024] In practical applications, the off-peak electricity evaporative heat exchanger system includes multiple off-peak electricity evaporative heat exchanger assemblies, which are set up independently. Each off-peak electricity evaporative heat exchanger assembly includes an off-peak electricity evaporative heat exchanger 17, a riser pipe 18, a downcomer pipe 19, and a saturated section heat exchanger fixed drain port 5. The riser pipe 18 and downcomer pipe 19 are connected to both sides of the off-peak electricity evaporative heat exchanger 17, respectively. The off-peak electricity evaporative heat exchanger 17 is connected to the saturated section heat exchanger fixed drain port 5 through a drain pipeline. The off-peak electricity evaporative heat exchanger 17 is connected to the steam drum 9 through the downcomer pipe 19. The riser pipe 18 of the off-peak electricity evaporative heat exchanger 17 is connected to the riser pipe 18 of the steam drum 9 through a connecting pipeline. The off-peak electricity evaporative heat exchanger 17 is connected to the heat exchange section cooling water return port 6 and the heat exchange section cooling water inlet port 7 through a cooling water pipeline.

[0025] In this device, the off-peak electricity superheater heat exchanger system includes multiple off-peak electricity superheater heat exchangers 14. The multiple off-peak electricity superheater heat exchangers 14 are connected by connecting pipelines. The top of the off-peak electricity superheater heat exchanger 14 is connected to the main steam outlet 16 through an exhaust pipeline. The bottom of the off-peak electricity superheater heat exchanger 14 is connected to the superheated section cooling water return port 11 and the superheated section cooling water inlet 12 through a cooling water pipeline. The bottom of the off-peak electricity superheater heat exchanger 14 is connected to the superheated section heat exchanger fixed drain port 13 through a drain pipeline.

[0026] In practical applications, the wind power superheater heat exchanger system includes multiple wind power superheater heat exchangers 15, which are connected by connecting pipelines. The top of the wind power superheater heat exchanger 15 is connected to the main steam outlet 16 through an exhaust pipeline. The bottom of the wind power superheater heat exchanger 15 is connected to the superheated section cooling water return port 11 and the superheated section cooling water inlet 12 through a cooling water pipeline. The bottom of the wind power superheater heat exchanger 15 is connected to the superheated section heat exchanger fixed drain port 13 through a drain pipeline.

[0027] The segmented thermal storage steam drum superheated steam injection device provided by this invention has a storage function, strong adaptability to new energy sources, and low operating costs, ensuring the use of wind or off-peak electricity throughout the day. This invention also proposes a method based on the segmented thermal storage steam drum superheated steam injection device, comprising: Deoxygenated water enters the wind power preheating heat exchanger 2 after being pressurized by a high-temperature multi-stage centrifugal pump from the water supply inlet 1. The outlet temperature of the wind power preheating heat exchanger 2 is adjusted by the wind power evaporating heat exchanger 3 and the off-peak electricity evaporating heat exchanger 17. Water from the wind power preheating heat exchanger 2 enters the steam drum 9, and then enters the wind power evaporating heat exchanger 3 and the off-peak electricity evaporating heat exchanger 17 through the downcomer 19. After absorbing heat through their respective risers 18, steam and water are separated in the steam drum 9. The separated steam enters the off-peak electricity superheated heat exchanger 14 and the wind power superheated heat exchanger 15 in sequence for superheating to generate superheated steam. The separated water is repeatedly entered into the wind power evaporative heat exchanger 3 and the off-peak electricity evaporative heat exchanger 17 through the downcomer 19 for circulating heating. The steam that has absorbed heat through the riser pipe 18 is evaporated in the wind power evaporator heat exchanger 3 and the off-peak electricity evaporator heat exchanger 17 respectively. The steam that enters from the wind power evaporator heat exchanger 3 and the off-peak electricity evaporator heat exchanger 17 respectively enters their respective wind power superheater heat exchanger 3 and off-peak electricity superheater heat exchanger 17, and after being superheated, it enters the exhaust pipeline.

[0028] The working principle of this segmented thermal storage steam drum superheated steam injection device and method is described in detail below: In this embodiment, the overall workflow adopts a modular structure. Each module is separately equipped with a heating storage body, a fan and heat exchanger, air ducts and process piping. The device is installed by on-site assembly of modules. The device adopts an aluminum silicate fiber material insulation layer structure to achieve step-by-step heat insulation and cooling. The whole is divided into a heating system and a power distribution system.

[0029] In practical applications, the heating system consists of a heat storage system, a heat exchange system, a steam-water system, a sampling system, and an air circulation system.

[0030] In this embodiment, the thermal storage system consists of multiple sets of thermal storage modules arranged in a staggered manner. Each thermal storage module comprises a heat storage body and resistance heating wires interspersed within it. The resistance heating wires are made of a high-resistance heating alloy. In practical applications, the heat storage body is made of specially sintered magnesia bricks. The resistance heating wires are surrounded by an insulation layer, a wire arrangement layer, a wire support layer, and a wire cover layer, and are sealed within the module to ensure that heat energy conversion loss is avoided during the conversion of electrical energy into thermal energy. The insulation layer and the wire arrangement layer are made of 95% magnesia bricks, while the wire support layer and the wire cover layer are made of high-alumina clay bricks or magnesia bricks.

[0031] In this embodiment, the heat exchange system includes a high-temperature resistant circulating centrifugal fan, a wind-powered preheating heat exchanger 2, a wind-powered evaporative heat exchanger 3, a valley-electricity evaporative heat exchanger 17, a wind-powered superheating heat exchanger 15, a valley-electricity superheating heat exchanger 14, air ducts and one-way valves, a steel frame for the heat exchange unit, and insulation, etc.

[0032] It should be noted that in practical applications, heat exchangers are all of the air-water convection heat exchange structure, with inlet and outlet temperature, pressure, and flow measurement points. The boiler drum is equipped with safety valves, pressure, and temperature measurement points, and the air side is equipped with temperature and pressure measurement points.

[0033] In this embodiment, the wind power preheating heat exchanger 2 adopts a finned convection heat exchanger with tube bundle material 20G and fin material 08AL. The pressure can be steplessly adjusted according to the heat demand of the load end to ensure strong load-bearing capacity.

[0034] In practical applications, the off-peak evaporator and the wind power evaporator adopt a steam drum structure, including a wind power preheating heat exchanger 2, a wind power evaporation heat exchanger 3, a steam drum 9, and a riser pipe 18. The riser pipe 18 is used for air convection heat exchange, and the downcomer pipe 19 and the sewage system are used. The steam drum 9 is made of 12MnNiMoR material, and the furnace tube is made of 20G material.

[0035] In this embodiment, the wind power superheat heat exchanger 15 and the off-peak electricity superheat heat exchanger 14 are bare tube convection heat exchangers, and the tube bundle material is 15CrMoG or 12Cr1MoVG.

[0036] It should be noted that in practical applications, the preheating heat exchanger, evaporating heat exchanger, and superheating heat exchanger are all equipped with independent air circulation systems, including variable frequency fans, air ducts, air valves, etc. The outlet water temperature of each section is adjusted by the fan frequency. The fan is installed in the return air duct to adapt to the requirements of air temperature and air pressure, thereby reducing energy consumption. The high-temperature centrifugal fan includes the fan body, matching explosion-proof variable frequency motor, coupling, protective device, air inlet, regulating valve, matching flange, bolts and nuts, vulnerable parts, etc.

[0037] In addition, the steam and water system includes a high-temperature multi-stage centrifugal pump, regulating valve, steam flow meter, and water spray desuperheater.

[0038] In this embodiment, the sampling system includes sampling and testing devices for feedwater, steam, and boiler water at the feedwater pump inlet, main steam outlet 16, and upper steam drum 9. The system also includes periodic sludge removal and chemical dosing based on water quality composition to control steam quality and prevent scale buildup on boiler tubes.

[0039] In practical applications, deoxygenated water is pressurized from the feed water inlet 1 by a high-temperature multi-stage centrifugal pump and then enters the wind-powered preheating heat exchanger 2 for heating. The wind-powered preheating heat exchanger 2 is adjustable. If the wind power is high, the excess electricity is stored. If the wind power is low, the outlet temperature of the wind-powered preheating heat exchanger 2 is low, and the system will increase the fan frequency. If the preheater outlet temperature cannot be met, it will be adjusted through the wind-powered evaporative heat exchanger 3 and the off-peak evaporative heat exchanger 17.

[0040] In this embodiment, water from the wind power preheating heat exchanger 2 enters the steam drum 9 above the wind power evaporating heat exchanger 3, and then enters the wind power evaporating heat exchanger 3 and the off-peak evaporating heat exchanger 17 through the downcomer 19. After absorbing heat through the riser 18, steam and water are separated in the steam drum 9. The separated steam enters the off-peak superheating heat exchanger 14 and the wind power superheating heat exchanger 15 for further superheating, generating high superheated steam for supply to users. The separated water is repeatedly entered into the wind power evaporating heat exchanger 3 and the off-peak evaporating heat exchanger 17 through the downcomer 19 for cyclic heating.

[0041] In practical applications, after heat absorption and exchange through the riser pipe 18, the steam becomes steam with a certain dryness. A regulating valve is installed in the inlet water pipe of the wind power evaporative heat exchanger 3, and its opening is interlocked with the outlet steam flow meter. When the wind power is low, the outlet flow meter of the wind power evaporative heat exchanger 3 is displayed, and the opening of its inlet regulating valve is reduced, so that the flow rate of the inlet regulating valve corresponds to the flow meter of the outlet. The remaining water from the wind power preheating heat exchanger 2 will enter the off-peak evaporative heat exchanger 17 for evaporation. A total flow meter is installed in the steam outlet pipe of the off-peak evaporative heat exchanger 17, which is interlocked with the fan of the off-peak evaporative heat exchanger 17 to keep the total flow rate at a certain parameter. The steam entering from the wind power evaporative heat exchanger 3 and the off-peak evaporative heat exchanger 17 respectively enters their respective wind power superheating heat exchanger 15 and off-peak superheating heat exchanger 14, and after superheating, it enters the exhaust pipeline.

[0042] It should be noted that a water spray desuperheater is installed at the main steam outlet 16. When the temperature is too high, the water spray can be used to regulate the temperature by cooling the steam through the outlet water of the preheating section.

[0043] In this embodiment, the power distribution system consists of a wind power distribution module, an off-peak power distribution module, and a low-voltage power distribution module. In practical applications, the wind power distribution module includes an incoming line cabinet, a metering cabinet, an outgoing line cabinet, a vacuum contactor cabinet, a control cabinet, and a power regulator cabinet.

[0044] In practical applications, the wind power preheating module is a power regulation module. The switching switch of the wind power evaporation and overheating power distribution module conversion control cabinet is matched with the wind power generation capacity. It is connected and put into operation according to the wind power generation capacity. The power block is set to 10MW+10MW+10MWW, and the overheating module is 5MW+5MW. It can realize wind power access with whole parameters from 1 to 50MW. The parameters can be accurate to the unit, so as to make full use of wind power. The switching automatically detects the output voltage of the wind turbine generator set. When the deviation is less than 10MW, that is, less than the power regulation range of the power regulator, the power regulator will adjust it. When it is greater than 10MW, a set of evaporation or overheating wind power distribution modules is automatically switched on and off, and the power regulation module is switched on at the same time to achieve adjustable output from 0 to 50MW.

[0045] In this embodiment, the off-peak electricity distribution module includes an incoming line cabinet, a metering cabinet, an outgoing line cabinet, a vacuum contactor cabinet, and a control cabinet; the low-voltage distribution module includes an incoming line and frequency converter cabinet, and an instrument junction box.

[0046] In practical applications, the equipment provided in this embodiment has low current and low power loss, uses small wire diameter, and has higher efficiency than traditional 0.4kV low-voltage power distribution.

[0047] The present invention provides a segmented thermal storage steam drum superheated steam injection device and method. The device is designed with a wind power system and a valley power system. Depending on the site conditions, the two systems can be used independently or in parallel. It has strong adaptability to new energy sources, low operating costs, and can ensure production needs with stable pressure and continuity at all times, with high safety.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A segmented thermal storage type steam drum superheated steam injection device, characterized in that, include: The boiler drum assembly has its upper end connected to the off-peak electricity superheater heat exchanger system and the wind power superheater heat exchanger system, respectively, and its lower end connected to the wind power preheater heat exchanger system, the wind power evaporator heat exchanger system, and the off-peak electricity evaporator heat exchanger system, respectively. The wind power preheater heat exchanger system, the wind power evaporator heat exchanger system, and the off-peak electricity evaporator heat exchanger system are all connected to the cooling water return port (6) and the cooling water inlet port (7) of the heat exchange section. The wind power preheater heat exchanger... The system is connected to the water inlet (1) via a water supply pipeline. The upper end of the water supply pipeline is connected to the exhaust pipeline. One end of the exhaust pipeline is connected to the main steam outlet (16). The other end of the exhaust pipeline is connected to the off-peak electricity superheater system and the wind power superheater system. The off-peak electricity superheater system and the wind power superheater system are both connected to the superheated section cooling water return port (11), the superheated section cooling water inlet (12), and the superheated section heat exchanger fixed drain port (13).

2. The segmented thermal storage steam drum superheated steam injection device according to claim 1, characterized in that, The boiler drum assembly includes a boiler drum (9), a continuous drain outlet (8), a chemical inlet for a dosing pump (10), and riser pipes (18). The dosing pump inlet (10) is provided on one side of the boiler drum (9). The boiler drum (9) is connected to the continuous drain outlet (8) through a drain pipeline. Multiple riser pipes (18) are connected to the upper end of the boiler drum (9). The lower end of the boiler drum (9) is connected to a wind power preheating heat exchanger system, a wind power evaporative heat exchanger system, and a valley electricity evaporative heat exchanger system, respectively.

3. The segmented thermal storage steam drum superheated steam injection device according to claim 2, characterized in that, The wind power preheating heat exchanger system includes a wind power preheating heat exchanger (2) and a preheating section heat exchanger fixed drain outlet (4). The wind power preheating heat exchanger (2) is connected to the water supply pipeline through a connecting pipeline. The wind power preheating heat exchanger (2) is connected to the preheating section heat exchanger fixed drain outlet (4) through a drain pipeline. The wind power preheating heat exchanger (2) is connected to the steam drum (9) through a connecting pipeline. The wind power preheating heat exchanger (2) is connected to the heat exchange section cooling water return outlet (6) and the heat exchange section cooling water inlet outlet (7) through a cooling water pipeline.

4. The segmented thermal storage steam drum superheated steam injection device according to claim 2, characterized in that, The wind power evaporative heat exchanger system includes a wind power evaporative heat exchanger (3), a riser pipe (18), and a downcomer pipe (19). The riser pipe (18) and the downcomer pipe (19) are connected to both sides of the wind power evaporative heat exchanger (3). The wind power evaporative heat exchanger (3) is connected to the boiler drum (9) through the downcomer pipe (19). The riser pipe (18) of the wind power evaporative heat exchanger (3) is connected to the riser pipe (18) of the boiler drum (9) through a connecting pipeline. The wind power evaporative heat exchanger (3) is connected to the cooling water return port (6) of the heat exchange section and the cooling water inlet port (7) of the heat exchange section through a cooling water pipeline.

5. The segmented thermal storage steam drum superheated steam injection device according to claim 2, characterized in that, The off-peak electricity evaporative heat exchanger system includes multiple off-peak electricity evaporative heat exchanger assemblies, which are independently set up. Each off-peak electricity evaporative heat exchanger assembly includes an off-peak electricity evaporative heat exchanger (17), a riser pipe (18), a downcomer pipe (19), and a saturated section heat exchanger fixed drain outlet (5). The two sides of the off-peak electricity evaporative heat exchanger (17) are respectively connected to the riser pipe (18) and the downcomer pipe (19). The off-peak electricity evaporative heat exchanger (17) is connected to the saturated section heat exchanger fixed drain outlet (5) through a drain pipeline. The off-peak electricity evaporative heat exchanger (17) is connected to the steam drum (9) through the downcomer pipe (19). The riser pipe (18) of the off-peak electricity evaporative heat exchanger (17) is connected to the riser pipe (18) of the steam drum (9) through a connecting pipeline. The off-peak electricity evaporative heat exchanger (17) is connected to the cooling water return outlet (6) and the cooling water inlet (7) of the heat exchange section through a cooling water pipeline.

6. The segmented thermal storage steam drum superheated steam injection device according to claim 1, characterized in that, The off-peak electricity superheater system includes multiple off-peak electricity superheater heat exchangers (14), which are connected by connecting pipelines.

7. The segmented thermal storage steam drum superheated steam injection device according to claim 6, characterized in that, The top of the off-peak electricity superheater heat exchanger (14) is connected to the main steam outlet (16) through an exhaust pipeline. The bottom of the off-peak electricity superheater heat exchanger (14) is connected to the superheated section cooling water return port (11) and the superheated section cooling water inlet (12) through a cooling water pipeline. The bottom of the off-peak electricity superheater heat exchanger (14) is connected to the superheated section heat exchanger fixed drain port (13) through a drain pipeline.

8. The segmented thermal storage steam drum superheated steam injection device according to claim 1, characterized in that, The wind power superheater system includes multiple wind power superheaters (15), which are connected by connecting pipelines.

9. The segmented thermal storage steam drum superheated steam injection device according to claim 8, characterized in that, The top of the wind power superheater heat exchanger (15) is connected to the main steam outlet (16) through an exhaust pipeline. The bottom of the wind power superheater heat exchanger (15) is connected to the superheated section cooling water return port (11) and the superheated section cooling water inlet (12) through a cooling water pipeline. The bottom of the wind power superheater heat exchanger (15) is connected to the superheated section heat exchanger fixed drain port (13) through a drain pipeline.

10. A method for injecting superheated steam into a segmented thermal storage steam drum device according to any one of claims 1 to 9, characterized in that, include: Deoxygenated water enters the wind power preheating heat exchanger (2) after being pressurized by a high-temperature multi-stage centrifugal pump from the water supply inlet (1). The outlet temperature of the wind power preheating heat exchanger (2) is adjusted by the wind power evaporation heat exchanger (3) and the off-peak electricity evaporation heat exchanger (17). Water from the wind power preheating heat exchanger (2) enters the steam drum (9), and then enters the wind power evaporation heat exchanger (3) and the off-peak evaporation heat exchanger (17) through the downcomer (19). The water then absorbs heat through its respective riser (18) and undergoes steam-water separation in the steam drum (9). The separated steam enters the off-peak electricity superheated heat exchanger (14) and the wind power superheated heat exchanger (15) in sequence for superheating to generate superheated steam. The separated water enters the wind power evaporative heat exchanger (3) and the off-peak electricity evaporative heat exchanger (17) through the downcomer (19) for repeated circulation heating. The steam after absorbing heat through the riser pipe (18) is evaporated from the wind power evaporator heat exchanger (3) and the off-peak electricity evaporator heat exchanger (17). The steam entering from the wind power evaporator heat exchanger (3) and the off-peak electricity evaporator heat exchanger (17) enters their respective wind power superheater heat exchanger (3) and off-peak electricity superheater heat exchanger (17), and after superheating, it enters the exhaust pipeline.

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