Technical transformation device for improving vacuum degree of steam turbine

Abstract

The utility model relates to the technical field of steam turbine vacuum degree technical transformation, in particular to a technical transformation device for improving the vacuum degree of a steam turbine. According to the technical scheme, the technical transformation device for improving the vacuum degree of the steam turbine comprises an exhaust device body, a branch pipeline, an electric adjusting valve, a water supply pipeline mother pipe, an electric shunt valve, a water supply hole, a fan-shaped atomization nozzle, a mounting base and a temperature monitoring probe, and the branch pipeline is arranged on one side of the exhaust device body; compared with the prior art that the vacuum of the existing steam turbine is related to various factors of cooling water in a condenser, when the exhaust steam temperature rises, the pressure of an exhaust device is reduced, the vacuum degree is also reduced, and the efficiency of the steam turbine is directly influenced, the scheme provided by the utility model has the advantages that the existing desalted water resource is utilized; the spraying pipe bundle is additionally arranged in the exhaust device, and an air cooling and water cooling mode is adopted on the basis of original air cooling, so that the exhaust steam temperature is reduced, and subsequent equipment parts are prevented from being damaged by too high temperature.

Description

Technical Field

[0001] This utility model relates to the field of steam turbine vacuum degree technical transformation technology, and in particular to a technical transformation device for improving steam turbine vacuum degree. Background Technology

[0002] In the power generation process of a power plant, the steam turbine is the core equipment that converts the thermal energy of steam into mechanical energy. Vacuuming the steam turbine is an indispensable key step for its start-up and normal operation. By performing vacuuming, a specific low-pressure environment can be created, which has many positive impacts on the efficient, safe, and stable operation of the steam turbine. It is an important guarantee for the reliable power generation and optimized operation of the power plant. The problem of insufficient condenser vacuum during steam turbine operation is a common technical challenge faced by the power industry. This problem not only affects the operating efficiency of the steam turbine, but may also lead to frequent equipment failures.

[0003] During the operation of a steam turbine, steam loses kinetic energy through the impact and friction of the turbine blades, resulting in high-temperature and high-pressure exhaust steam. The exhaust steam enters the condenser through the exhaust system. Due to the reaction force of the condenser, the exhaust system is often under negative pressure. When the exhaust temperature rises, the flue gas density decreases and the volume increases, causing the pressure inside the exhaust system to decrease as well. This decrease in internal pressure leads to a negative pressure state in the exhaust system, resulting in a decrease in vacuum. The size of the turbine vacuum is related to factors such as the temperature of the cooling water in the condenser and the pressure in the exhaust pipe. When the exhaust temperature rises, the pressure in the exhaust system decreases, and the vacuum also decreases, directly affecting the efficiency of the steam turbine.

[0004] The vacuum level of existing steam turbines is related to factors such as the temperature of the cooling water in the condenser and the pressure in the exhaust pipe. When the exhaust temperature rises, the pressure of the exhaust device drops, and the vacuum level also decreases, directly affecting the efficiency of the steam turbine. This solution utilizes existing demineralized water resources and adds a spray tube bundle inside the exhaust device. Based on the original air cooling, it adopts an air-cooling plus water cooling method to reduce the exhaust temperature and prevent excessively high temperatures from damaging downstream equipment components. Utility Model Content

[0005] In order to overcome the problem that the vacuum of existing steam turbines is related to factors such as the temperature of the cooling water in the condenser and the pressure in the exhaust pipe, when the exhaust temperature rises, the pressure of the exhaust device drops, and the vacuum also decreases, which directly affects the efficiency of the steam turbine.

[0006] The technical solution of this utility model is as follows: a technical modification device for improving the vacuum degree of a steam turbine, comprising an exhaust device body, branch pipes, an electric regulating valve, a main water supply pipe, an electric water distribution valve, water supply holes, fan-shaped atomizing nozzles, a mounting base, and a temperature monitoring probe. A branch pipe is provided on one side of the exhaust device body, with two sets of branch pipes. An electric regulating valve is provided on the outer side of the branch pipes. One end of each branch pipe is connected to the main water supply pipe, and an electric water distribution valve is provided on the outer side of the main water supply pipe. A water supply hole is opened on the surface of one end of the branch pipe located inside the exhaust device body, with multiple sets of water supply holes. A fan-shaped atomizing nozzle is provided on the surface of the water supply hole. A mounting base is provided on one side of the inner wall of the exhaust device body, and a temperature monitoring probe is provided on one side of the mounting base.

[0007] Preferably, the demineralized water from the power plant is transported through the main water supply pipeline. The demineralized water is evenly distributed to the branch pipelines by an electric water distribution valve. The demineralized water is then transported to the main body of the exhaust device through the branch pipelines. The water inflow of the branch pipelines is dynamically adjusted by an electric regulating valve. The demineralized water transported to the main body of the exhaust device is then transported to the fan-shaped atomizing nozzle through the water supply hole. The fan-shaped atomizing nozzle sprays the demineralized water evenly in a fan shape towards the upper part of the exhaust device to cool the high-temperature exhaust steam above. A temperature monitoring probe is installed on the mounting base to monitor the temperature of the water vapor inside the main body of the exhaust device in real time.

[0008] Preferably, an air inlet pipe is provided on one side of the main body of the exhaust device. The air inlet pipe is located above the main water supply pipe. An air inlet connector is provided at one end of the air inlet pipe. An air inlet valve is provided on the outside of the air inlet pipe. A first air filter plate is provided at the end of the air inlet pipe located inside the main body of the exhaust device.

[0009] Preferably, the main body of the exhaust device is provided with an installation frame inside, and a water-dispersing guide plate is provided on the inner side of the installation frame.

[0010] Preferably, a cooler is provided on one side of the exhaust device body, and support bases are provided on both sides of the interior of the exhaust device body. The support bases are located below the water distribution guide plate, and cooling pipes are provided on one side of the support bases.

[0011] Preferably, the main body of the exhaust device has a water storage tank inside, which is located below the cooling pipes. A water inlet groove is opened on the surface of the water storage tank, and a condensation pump is installed on the bottom of the water storage tank.

[0012] Preferably, a deaerator is provided on the bottom surface of the exhaust device body, and a data controller is provided on the surface of the deaerator.

[0013] Preferably, an installation groove is provided on the other side of the interior of the exhaust device body, a second air filter plate is installed inside the installation groove, a waterproof baffle is installed above the installation groove, an exhaust pipe is provided on the other side of the exhaust device body, and a vacuum pump is installed on the outside of the exhaust pipe.

[0014] The beneficial effects of this utility model are:

[0015] The vacuum level of existing steam turbines is related to factors such as the temperature of the cooling water in the condenser and the pressure in the exhaust pipe. When the exhaust temperature rises, the pressure of the exhaust device drops, and the vacuum level also decreases, directly affecting the efficiency of the steam turbine. This solution utilizes existing demineralized water resources and adds a spray tube bundle inside the exhaust device. Based on the original air cooling, it adopts an air-cooling plus water cooling method to reduce the exhaust temperature and prevent excessively high temperatures from damaging downstream equipment components. Attached Figure Description

[0016] Figure 1 The diagram shown is a first three-dimensional structural schematic of a technical modification device for improving the vacuum level of a steam turbine according to this utility model.

[0017] Figure 2 The diagram shown is a second three-dimensional structural schematic of a technical modification device for improving the vacuum level of a steam turbine according to this utility model.

[0018] Figure 3 The diagram shown is a three-dimensional internal structure of the first part of a technical modification device for improving the vacuum level of a steam turbine according to this utility model.

[0019] Figure 4 The diagram shown is a three-dimensional internal structure of the second part of a technical modification device for improving the vacuum level of a steam turbine according to this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Main body of the exhaust device; 201. Air inlet pipe; 202. Air inlet connector; 203. Air inlet valve; 204. First filter air plate; 301. Branch pipe; 302. Electric regulating valve; 303. Main water supply pipe; 304. Electric water distribution valve; 305. Water supply hole; 306. Fan-shaped atomizing nozzle; 307. Mounting base; 308. Temperature monitoring probe; 401. Mounting frame; 402. Dispersing water guide plate; 501. Cooler; 502. Support base; 503. Cooling pipe; 601. Water storage tank; 602. Water inlet trough; 603. Condensation pump; 701. Deaerator; 702. Data controller; 801. Mounting slot; 802. Second filter air plate; 803. Waterproof baffle; 804. Exhaust pipe; 805. Vacuum pump. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figure 4 This utility model provides an embodiment: a technical modification device for improving the vacuum degree of a steam turbine, comprising an exhaust device main body 1, branch pipes 301, an electric regulating valve 302, a main water supply pipe 303, an electric water distribution valve 304, a water supply hole 305, a fan-shaped atomizing nozzle 306, a mounting base 307, and a temperature monitoring probe 308. A branch pipe 301 is provided on one side of the exhaust device main body 1, and two sets of branch pipes 301 are provided. An electric regulating valve is provided on the outer side of the branch pipe 301. 302. One end of each of the two sets of branch pipes 301 is connected to a water supply main pipe 303. An electric water distribution valve 304 is installed on the outside of the water supply main pipe 303. A water supply hole 305 is opened on the surface of one end of the branch pipe 301 located inside the exhaust device body 1. Multiple sets of water supply holes 305 are opened. A fan-shaped atomizing nozzle 306 is installed on the surface of the water supply hole 305. A mounting base 307 is installed on one side of the inner wall of the exhaust device body 1. A temperature monitoring probe 308 is installed on one side of the mounting base 307.

[0023] Please see Figure 1 , Figure 2 and Figure 3 In this embodiment, an air inlet pipe 201 is provided on one side of the exhaust device body 1. The air inlet pipe 201 is located above the water supply main pipe 303. An air inlet connector 202 is provided at one end of the air inlet pipe 201, and an air inlet valve 203 is provided on the outside of the air inlet pipe 201. A first filter plate 204 is provided at the end of the air inlet pipe 201 inside the exhaust device body 1. In use, high-temperature exhaust steam is transported through the air inlet pipe 201. The air inlet pipe 201 is connected to the turbine outlet through the air inlet connector 202. The air inlet valve 203 controls the transport rate of the air inlet pipe 201. The first filter plate 204 prevents foreign objects from entering the exhaust device body 1. An installation frame 401 is provided inside the exhaust device body 1. A dispersing water guide plate 402 is provided on the side. In use, the dispersing water guide plate 402 is installed through the mounting frame 401. The dispersing water guide plate 402 disperses the cooling condensate and demineralized water falling from above, allowing it to flow evenly into the lower part of the exhaust device body 1. A cooler 501 is provided on one side of the exhaust device body 1. Support bases 502 are provided on both sides inside the exhaust device body 1. The support bases 502 are located below the dispersing water guide plate 402. A cooling pipe 503 is provided on one side of the support base 502. In use, the cooler 501 cools the cooling pipe 503. The cooling pipe 503 is installed through the support base 502, and the cooling pipe 503 provides secondary cooling for the condensate and demineralized water falling from above.

[0024] The main body 1 of the exhaust device has a water storage tank 601 located below the cooling pipe 503. A water inlet trough 602 is formed on the surface of the water storage tank 601, and a condensate pump 603 is installed on the bottom surface of the water storage tank 601. During use, the water storage tank 601 stores the cooled condensate and demineralized water, the water inlet trough 602 guides the condensate and demineralized water, and the condensate pump 603 pumps the stored condensate and demineralized water from the water storage tank 601. A deaerator 701 is installed on the bottom surface of the main body 1 of the exhaust device, and a data controller 702 is installed on the surface of the deaerator 701. During use, the deaerator 701 removes oxygen from the collected water, forming a circulating water path. The controller 702 displays the working status of the deaerator 701. An installation slot 801 is provided on the other side of the exhaust device body 1. A second filter plate 802 is installed inside the installation slot 801. A waterproof baffle 803 is installed above the installation slot 801. An exhaust pipe 804 is provided on the other side of the exhaust device body 1. A vacuum pump 805 is installed outside the exhaust pipe 804. In use, the second filter plate 802 is installed through the installation slot 801. The second filter plate 802 prevents foreign objects from entering the exhaust pipe 804. The waterproof baffle 803 blocks condensate falling from above. The exhaust pipe 804 transports the cooled exhaust steam, and the vacuum pump 805 extracts the exhaust steam.

[0025] During operation, high-temperature exhaust steam is transported through the intake pipe 201, the intake pipe 201 is connected to the turbine outlet through the intake connector 202, the transport rate of the intake pipe 201 is controlled by the intake valve 203, and foreign objects are prevented from entering the exhaust device body 1 through the first filter plate 204.

[0026] Meanwhile, the demineralized water from the power plant is transported through the main water supply pipe 303, and the demineralized water is evenly distributed to the branch pipes 301 through the electric water distribution valve 304. The demineralized water is then transported to the interior of the exhaust device body 1 through the branch pipes 301. The water inflow of the branch pipes 301 is dynamically adjusted through the electric regulating valve 302. The demineralized water transported to the interior of the exhaust device body 1 is then transported to the fan-shaped atomizing nozzle 306 through the water supply hole 305. The fan-shaped atomizing nozzle 306 sprays the demineralized water evenly in a fan shape towards the upper part of the exhaust device body 1 to cool the high-temperature exhaust steam above. The temperature monitoring probe 308 is installed through the mounting base 307, and the temperature monitoring probe 308 monitors the temperature of the water vapor inside the exhaust device body 1 in real time.

[0027] After the high-temperature exhaust steam is cooled by the sprayed demineralized water, the dispersion guide plate 402 is installed through the mounting frame 401. The dispersion guide plate 402 disperses the cooled condensate and demineralized water falling from above, allowing it to flow evenly into the lower part of the exhaust device body 1. The cooling pipe 503 is cooled by the cooler 501. The cooling pipe 503 is installed through the support base 502. The cooling pipe 503 provides secondary cooling for the condensate and demineralized water falling from above. The cooled condensate and demineralized water are stored in the water storage tank 601. The condensate and demineralized water are guided through the water inlet trough 602. The condensate and demineralized water stored in the water storage tank 601 are transported by the condensate pump 603.

[0028] Meanwhile, the second filter plate 802 is installed through the mounting slot 801. The second filter plate 802 prevents foreign objects from entering the exhaust pipe 804. The waterproof baffle 803 blocks the condensate falling from above. The exhaust pipe 804 transports the cooled exhaust steam. The vacuum pump 805 extracts the exhaust steam. The deaerator 701 removes oxygen from the collected water, forming a circulating water circuit. The data controller 702 displays the working status of the deaerator 701.

[0029] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A technical modification device for improving the vacuum level of a steam turbine, comprising an exhaust device body (1), characterized in that: It also includes branch pipes (301), electric regulating valves (302), water supply main pipes (303), electric water distribution valves (304), water supply holes (305), fan-shaped atomizing nozzles (306), mounting bases (307), and temperature monitoring probes (308). A branch pipe (301) is provided on one side of the exhaust device body (1). There are two sets of branch pipes (301). An electric regulating valve (302) is provided on the outside of the branch pipes (301). One end of the two sets of branch pipes (301) is connected to... There is a main water supply pipe (303), and an electric water distribution valve (304) is installed on the outside of the main water supply pipe (303). The branch pipe (301) is located inside the exhaust device body (1) and has a water supply hole (305) on one end surface. There are multiple sets of water supply holes (305). The surface of the water supply hole (305) is equipped with a fan-shaped atomizing nozzle (306). An installation base (307) is installed on one side of the inner wall of the exhaust device body (1). A temperature monitoring probe (308) is installed on one side of the installation base (307).

2. The technical modification device for improving the vacuum degree of a steam turbine according to claim 1, characterized in that: An air inlet pipe (201) is provided on one side of the exhaust device body (1). The air inlet pipe (201) is located above the water supply pipeline main pipe (303). An air inlet connector (202) is provided at one end of the air inlet pipe (201). An air inlet valve (203) is provided on the outside of the air inlet pipe (201). A first filter air plate (204) is provided at one end of the air inlet pipe (201) inside the exhaust device body (1).

3. The technical modification device for improving the vacuum degree of a steam turbine according to claim 1, characterized in that: An installation frame (401) is provided inside the main body (1) of the exhaust device, and a water-dispersing guide plate (402) is provided on the inner side of the installation frame (401).

4. The technical modification device for improving the vacuum degree of a steam turbine according to claim 3, characterized in that: A cooler (501) is provided on one side of the exhaust device body (1). Support bases (502) are provided on both sides of the interior of the exhaust device body (1). The support bases (502) are located below the water distribution guide plate (402). Cooling pipes (503) are provided on one side of the support bases (502).

5. The technical modification device for improving the vacuum degree of a steam turbine according to claim 4, characterized in that: The main body (1) of the exhaust device is equipped with a water storage tank (601). The water storage tank (601) is located below the cooling pipe (503). A water inlet groove (602) is opened on the surface of the water storage tank (601). A condensation pump (603) is installed on the bottom surface of the water storage tank (601).

6. The technical modification device for improving the vacuum degree of a steam turbine according to claim 1, characterized in that: A deaerator (701) is provided on the bottom surface of the exhaust device body (1), and a data controller (702) is provided on the surface of the deaerator (701).

7. The technical modification device for improving the vacuum degree of a steam turbine according to claim 1, characterized in that: An installation groove (801) is provided on the other side of the interior of the exhaust device body (1). A second filter plate (802) is provided inside the installation groove (801). A waterproof baffle (803) is provided above the installation groove (801). An exhaust pipe (804) is provided on the other side of the exhaust device body (1). A vacuum pump (805) is provided on the outside of the exhaust pipe (804).

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